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Majumder S, Xiang T, Calvin Sun C, Mara NA. Crystal structure-mechanical property relationship in succinic acid and L- alanine probed by nanoindentation. Int J Pharm 2024; 665:124716. [PMID: 39278287 DOI: 10.1016/j.ijpharm.2024.124716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 09/03/2024] [Accepted: 09/12/2024] [Indexed: 09/18/2024]
Abstract
Establishing structure-mechanical property relationships is crucial for understanding and engineering the performance of pharmaceutical molecular crystals. In this study, we employed nanoindentation, a powerful technique that can probe mechanical properties at the nanoscale, to investigate the hardness and elastic modulus of single crystals of succinic acid and L-alanine. Nanoindentation results reveal distinct mechanical behaviors between the two compounds, with L-alanine exhibiting significantly higher hardness and elastic modulus compared to succinic acid. These differences are attributed to the underlying variations in molecular crystal structures - the three-dimensional bonding network and high intermolecular interaction energies of L-alanine molecules leads to its stiffness compared to the layered and weakly bonded crystal structure of succinic acid. Furthermore, the anisotropic nature of succinic acid is reflected in the directional dependence of the mechanical responses where it has been found that the (111) plane is more resistant to indentation than (100). By directly correlating the nanomechanical properties obtained from nanoindentation with the detailed crystal structures, this study provides important insights into how differences in molecular arrangements can translate into different macroscopic mechanical performance. These findings have implications on the selection of molecular crystals for optimized drug manufacturability.
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Affiliation(s)
- Sushmita Majumder
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, United states
| | - Tianyi Xiang
- Pharmaceutical Materials Science and Engineering Laboratory, Department of Pharmaceutics, University of Minnesota, Minneapolis, MN 55455, United states
| | - Changquan Calvin Sun
- Pharmaceutical Materials Science and Engineering Laboratory, Department of Pharmaceutics, University of Minnesota, Minneapolis, MN 55455, United states.
| | - Nathan A Mara
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, United states.
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2
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Pang X, Han S, Zheng K, Jiang L, Wang J, Qian S. Cellulose nanocrystal-stabilized Pickering emulsion gels as vehicles for follicular delivery of minoxidil. Int J Biol Macromol 2024; 277:134297. [PMID: 39097055 DOI: 10.1016/j.ijbiomac.2024.134297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 07/20/2024] [Accepted: 07/28/2024] [Indexed: 08/05/2024]
Abstract
Minoxidil (MXD) is the only topical over-the-counter medicine approved by the United States Food and Drug Administration for the treatment of androgenetic alopecia. For the purpose of targeting the delivery of MXD to dermal papilla in the hair follicle, MXD Pickering emulsion gels were fabricated based on the designability of deep eutectic solvent (DES) and the versatility of cellulose nanocrystal (CNC) and sodium carboxymethyl cellulose (CMC-Na). Structural studies and theoretical calculations results suggest that CNC can stabilize the interface between the MXD-DES and water, leading to the formation of Pickering emulsions. The rheological properties and stabilities of MXD Pickering emulsions were enhanced through gelation using CMC-Na, which highlights the good compatibility and effectiveness of natural polysaccharides in emulsion gels. Due to the particle size of emulsion droplets (679 nm) and the rheological properties of emulsion gel, the fabricated MXD formulations show in vivo hair regrowth promotion and hair follicle targeting capabilities. Interestingly, the MXD Pickering emulsion-based formulations exert therapeutic effects by upregulating the expression of hair growth factors. The proposed nanodrug strategy based on supramolecular strategies of CNC and CMC-Na provides an interesting avenue for androgenetic alopecia treatment.
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Affiliation(s)
- Xuan Pang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Song Han
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Kang Zheng
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255049, China.
| | - Liu Jiang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255049, China; School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong 255049, China.
| | - Jianping Wang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Shaosong Qian
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong 255049, China
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3
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Hoshino M, Ohgo Y. Investigating the Mechanism of Triboluminescence: Insights from Structural and Electrostatic Characterization of Copper Thiocyanate Complexes. Chemistry 2024; 30:e202401715. [PMID: 38979668 DOI: 10.1002/chem.202401715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/12/2024] [Accepted: 07/09/2024] [Indexed: 07/10/2024]
Abstract
Triboluminescence is a phenomenon in which light is generated through mechanical stress; it has emerging applications in stress-sensing devices. Although the prevailing mechanistic model indicates that light emits from charge separation and recombination in fracture planes arising from polar structures, its application in designing triboluminescent materials remains limited owing to numerous exceptions. This study provides insights into the essential requirements for triboluminescence by investigating the structural and electrostatic properties of fractured crystals of copper thiocyanate complexes. The examined fracture plane indicated that charge pairs (which are essential for light emission) form when intermolecular interactions are disrupted during fracturing. On the basis of the nature of these charges, we successfully suppressed triboluminescence by inhibiting the formation of intermolecular interactions disrupted in the examined complexes. Furthermore, we induced its re-emergence by creating an alternative fracture plane through controlled manipulation of the molecular network. This demonstrative deactivation and reactivation of triboluminescence underscores the critical role of intermolecular disruption in generating charge pairs, a prerequisite for triboluminescence.
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Affiliation(s)
- Manabu Hoshino
- Graduate School of Medicine, and General Medical Education and Research Center, Teikyo University, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Yoshiki Ohgo
- Graduate School of Medicine, and General Medical Education and Research Center, Teikyo University, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan
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4
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El Atrassi Z, Benzekri Z, Blacque O, Hökelek T, Mazzah A, Cherkaoui H, Sebbar NK. Crystal structure, Hirshfeld surface analysis, and calculations of inter-molecular inter-action energies and energy frameworks of 1-[(1-hexyl-1 H-1,2,3-triazol-4-yl)meth-yl]-3-(1-methyl-ethen-yl)-benzimidazol-2-one. Acta Crystallogr E Crystallogr Commun 2024; 80:1075-1080. [PMID: 39372177 PMCID: PMC11451489 DOI: 10.1107/s2056989024008703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2024] [Accepted: 09/04/2024] [Indexed: 10/08/2024]
Abstract
The benzimidazole moiety in the title mol-ecule, C19H25N5O, is almost planar and oriented nearly perpendicular to the triazole ring. In the crystal, C-H⋯O hydrogen bonds link the mol-ecules into a network structure. There are no π-π inter-actions present but two weak C-H⋯π(ring) inter-actions are observed. A Hirshfeld surface analysis of the crystal structure indicates that the most important contributions for the crystal packing are from H⋯H (62.0%), H⋯C/C⋯H (16.1%), H⋯N/N⋯H (13.7%) and H⋯O/O⋯H (7.5%) inter-actions. Evaluation of the electrostatic, dispersion and total energy frameworks indicate that the stabilization is dominated via the dispersion energy contributions in the title compound.
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Affiliation(s)
- Zakaria El Atrassi
- Laboratory of Heterocyclic Organic Chemistry Medicines Science Research Center Pharmacochemistry Competence Center Mohammed V University in Rabat Faculté des Sciences Av Ibn Battouta BP 1014 RabatMorocco
| | - Zakaria Benzekri
- Laboratory of Heterocyclic Organic Chemistry Medicines Science Research Center Pharmacochemistry Competence Center Mohammed V University in Rabat Faculté des Sciences Av Ibn Battouta BP 1014 RabatMorocco
| | - Olivier Blacque
- University of Zurich, Department of Chemistry B, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Türkiye
| | - Ahmed Mazzah
- Science and Technology of Lille USR 3290, Villeneuve d’ascq cedex, France
| | - Hassan Cherkaoui
- Laboratory of Heterocyclic Organic Chemistry Medicines Science Research Center Pharmacochemistry Competence Center Mohammed V University in Rabat Faculté des Sciences Av Ibn Battouta BP 1014 RabatMorocco
| | - Nada Kheira Sebbar
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibnou Zohr University, Agadir, Morocco
- Laboratory of Plant Chemistry Organic and Bioorganic Synthesis Faculty of Sciences Mohammed V University in Rabat 4 Avenue Ibn Battouta BP 1014 RP RabatMorocco
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5
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Schmuck B, Greco G, Pessatti TB, Sonavane S, Langwallner V, Arndt T, Rising A. Strategies for Making High-Performance Artificial Spider Silk Fibers. ADVANCED FUNCTIONAL MATERIALS 2024; 34:2305040. [PMID: 39355086 PMCID: PMC11440630 DOI: 10.1002/adfm.202305040] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 09/08/2023] [Indexed: 10/03/2024]
Abstract
Artificial spider silk is an attractive material for many technical applications since it is a biobased fiber that can be produced under ambient conditions but still outcompetes synthetic fibers (e.g., Kevlar) in terms of toughness. Industrial use of this material requires bulk-scale production of recombinant spider silk proteins in heterologous host and replication of the pristine fiber's mechanical properties. High molecular weight spider silk proteins can be spun into fibers with impressive mechanical properties, but the production levels are too low to allow commercialization of the material. Small spider silk proteins, on the other hand, can be produced at yields that are compatible with industrial use, but the mechanical properties of such fibers need to be improved. Here, the literature on wet-spinning of artificial spider silk fibers is summarized and analyzed with a focus on mechanical performance. Furthermore, several strategies for how to improve the properties of such fibers, including optimized protein composition, smarter spinning setups, innovative protein engineering, chemical and physical crosslinking as well as the incorporation of nanomaterials in composite fibers, are outlined and discussed.
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Affiliation(s)
- Benjamin Schmuck
- Department of Anatomy, Physiology, and BiochemistrySwedish University of Agricultural SciencesBox 7011Uppsala75007Sweden
- Department of Biosciences and NutritionKarolinska Institutet, NeoHuddinge14186Sweden
| | - Gabriele Greco
- Department of Anatomy, Physiology, and BiochemistrySwedish University of Agricultural SciencesBox 7011Uppsala75007Sweden
| | - Tomas Bohn Pessatti
- Department of Anatomy, Physiology, and BiochemistrySwedish University of Agricultural SciencesBox 7011Uppsala75007Sweden
| | - Sumalata Sonavane
- Department of Anatomy, Physiology, and BiochemistrySwedish University of Agricultural SciencesBox 7011Uppsala75007Sweden
| | - Viktoria Langwallner
- Department of Anatomy, Physiology, and BiochemistrySwedish University of Agricultural SciencesBox 7011Uppsala75007Sweden
| | - Tina Arndt
- Department of Biosciences and NutritionKarolinska Institutet, NeoHuddinge14186Sweden
| | - Anna Rising
- Department of Anatomy, Physiology, and BiochemistrySwedish University of Agricultural SciencesBox 7011Uppsala75007Sweden
- Department of Biosciences and NutritionKarolinska Institutet, NeoHuddinge14186Sweden
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6
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Dar AH, Rahman A, Mondal S, Barman A, Gupta M, Chowdhury PK, Thomas SP. Mechanical Tuning of Fluorescence Lifetime and Bandgap in an Elastically Flexible Molecular Semiconductor Crystal. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2406184. [PMID: 39118551 DOI: 10.1002/smll.202406184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Indexed: 08/10/2024]
Abstract
Despite having superior transport properties, lack of mechanical flexibility is a major drawback of crystalline molecular semiconductors as compared to their polymer analogues. Here single crystals of an organic semiconductor are reported that are not only flexible but exhibit systematic tuning of bandgaps, fluorescence lifetime, and emission wavelengths upon elastically bending. Spatially resolved fluorescence lifetime imaging and confocal fluorescence microscopy reveals systematic trends in the lifetime decay across the bent crystal region along with shifts in the emission wavelength. From the outer arc to the inner arc of the bent crystal, a significant decrease in the lifetime of ≈1.9 ns is observed, with a gradual bathochromic shift of ≈10 nm in the emission wavelength. For the crystal having a bandgap of 2.73 eV, the directional stress arising from bending leads to molecular reorientation effects and variations in the extent of intermolecular interactions- which are correlated to the lowering of bandgap and the evolution of the projected density of states. The systematic changes in the interactions quantified using electron density topological analysis in the compressed inner arc and elongated outer arc region are correlated to the non-radiative decay processes, thus rationalizing the tuning of fluorescence lifetime.
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Affiliation(s)
- Arif Hassan Dar
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Atiqur Rahman
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Srijan Mondal
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Argha Barman
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Monika Gupta
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Pramit K Chowdhury
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Sajesh P Thomas
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
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7
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Seki T, Kobayashi S, Ishikawa R, Yano K, Matsuo T, Hayashi S. Preparation of intrinsically fragile bent crystals. Chem Sci 2024; 15:12258-12263. [PMID: 39118637 PMCID: PMC11304792 DOI: 10.1039/d4sc02918f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Accepted: 07/06/2024] [Indexed: 08/10/2024] Open
Abstract
Although molecular crystals have long been considered to be intrinsically brittle, a study of molecular crystals that are capable of plastic or elastic bending upon applying mechanical stress recently attracted significant attention. Malleable molecular crystals often need to meet specific criteria regarding the intermolecular interaction patterns within the crystal structure. Accordingly, examples have been reported where one polymorph shows bending, while other polymorphs of the same compound exhibit fracturing upon exposure to mechanical force. Here, we have succeeded in preparing bent crystals of an intrinsically fragile polymorph. Methylated flufenamic acid (1) can form three different polymorphs, i.e., 1α, 1β, and 1γ, of which 1β is difficult to isolate. Under mechanical force, the crystals of 1α exhibit remarkable plastic deformation, while those of 1γ are readily broken. Similar to the mechanical properties, the emission properties of 1 differ depending on the polymorph, i.e., 1γ exhibits a shorter-wavelength emission maximum and much higher emission quantum yield than 1α. Remarkably, both the unbent and bent forms of the 1α crystals can undergo a phase transition to the 1γ phase upon exposure to ethyl acetate. In this manner, phase transitions of the mechanically bent crystals of polymorph 1α afforded bent crystals of the intrinsically fragile polymorph 1γ. These findings may lead to a potential post-modification method for the preparation of functional flexible materials with enhanced emission properties in order to expand their applications.
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Affiliation(s)
- Tomohiro Seki
- Department of Chemistry, Faculty of Science, Shizuoka University Shizuoka City Shizuoka 422-8017 Japan
| | - Shiori Kobayashi
- Department of Chemistry, Faculty of Science, Shizuoka University Shizuoka City Shizuoka 422-8017 Japan
| | - Rintaro Ishikawa
- Department of Chemistry, Faculty of Science, Shizuoka University Shizuoka City Shizuoka 422-8017 Japan
| | - Keigo Yano
- School of Engineering Science, Kochi University of Technology 185 Miyanokuchi, Tosayamada, Kami Kochi 782-8502 Japan
| | - Takumi Matsuo
- School of Engineering Science, Kochi University of Technology 185 Miyanokuchi, Tosayamada, Kami Kochi 782-8502 Japan
- Research Institute, Kochi University of Technology 185 Miyanokuchi, Tosayamada, Kami Kochi 782-8502 Japan
| | - Shotaro Hayashi
- School of Engineering Science, Kochi University of Technology 185 Miyanokuchi, Tosayamada, Kami Kochi 782-8502 Japan
- Research Institute, Kochi University of Technology 185 Miyanokuchi, Tosayamada, Kami Kochi 782-8502 Japan
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8
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Sánchez-Pacheco AD, Huerta EH, Espinosa-Camargo JB, Rodríguez-Nájera EV, Martínez-Otero D, Hernández-Ortega S, Valdés-Martínez J. Using cocrystals as a tool to study non-crystallizing molecules: crystal structure, Hirshfeld surface analysis and computational study of the 1:1 cocrystal of (E)-N-(3,4-difluorophenyl)-1-(pyridin-4-yl)methanimine and acetic acid. Acta Crystallogr C Struct Chem 2024; 80:343-348. [PMID: 38967630 PMCID: PMC11299205 DOI: 10.1107/s2053229624005187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 05/31/2024] [Indexed: 07/06/2024] Open
Abstract
Using a 1:1 cocrystal of (E)-N-(3,4-difluorophenyl)-1-(pyridin-4-yl)methanimine with acetic acid, C12H8F2N2·C2H4O2, we investigate the influence of F atoms introduced to the aromatic ring on promoting π-π interactions. The cocrystal crystallizes in the triclinic space group P1. Through crystallographic analysis and computational studies, we reveal the molecular arrangement within this cocrystal, demonstrating the presence of hydrogen bonding between the acetic acid molecule and the pyridyl group, along with π-π interactions between the aromatic rings. Our findings highlight the importance of F atoms in promoting π-π interactions without necessitating full halogenation of the aromatic ring.
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Affiliation(s)
- Addi Dana Sánchez-Pacheco
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 Coyoacán, Cd. Mx., Mexico
| | - Eduardo H. Huerta
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 Coyoacán, Cd. Mx., Mexico
| | - Josué Benjamín Espinosa-Camargo
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 Coyoacán, Cd. Mx., Mexico
- Tecnológico de Estudios Superiores de Ixtapaluca, Km 7 Carretera Ixtapaluca, Coatepec, CP 56580, Ixtapaluca, Estado de México, Mexico
| | - Evelyn Valeria Rodríguez-Nájera
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 Coyoacán, Cd. Mx., Mexico
| | - Diego Martínez-Otero
- CCIQS UAEM-UNAM, Universidad Nacional Autónoma de México, Carretera, Toluca-Atlacomulco Km. 14.5, Unidad San Cayetano, Toluca, 50200, Estado de México, Mexico
| | - Simón Hernández-Ortega
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 Coyoacán, Cd. Mx., Mexico
| | - Jesús Valdés-Martínez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 Coyoacán, Cd. Mx., Mexico
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9
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Ma YH, Yang K, Qian YL, Hong WP, Zhang KY, Tao ZW, Meng H, Ma WJ. Supramolecular interactions in cocrystals of benzoic acid derivatives with selective COX-2 inhibitor etoricoxib. Acta Crystallogr C Struct Chem 2024; 80:366-374. [PMID: 38967632 DOI: 10.1107/s2053229624006193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Accepted: 06/24/2024] [Indexed: 07/06/2024] Open
Abstract
The structures of three 1:1 cocrystal forms of etoricoxib {ETR; systematic name: 5-chloro-2-(6-methylpyridin-3-yl)-3-[4-(methylsulfonyl)phenyl]pyridine, C18H15ClN2O2S} have been synthesized and characterized by single-crystal X-ray diffraction; these are etoricoxib-benzoic acid (1/1), C18H15ClN2O2S·C7H6O2 (ETR-Bz), etoricoxib-4-fluorobenzoic acid (1/1), C18H15ClN2O2S·C7H5FO2 (ETR-PFB), and etoricoxib-4-nitrobenzoic acid (1/1), C18H15ClN2O2S·C7H5NO4 (ETR-PNB). Powder X-ray diffraction and thermal differential scanning calorimetry-thermogravimetry (DSC-TG) techniques were also used to characterize these multicomponent systems. Due to the influence of the corresponding acids, ETR shows different conformations. Furthermore, the energetic contributions of the supramolecular motifs have been established by energy framework studies of the stabilizing interaction forces and are consistent with the thermal stability of the cocrystals.
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Affiliation(s)
- Yu Heng Ma
- School of Materials Science and Chemical Engineering, Chuzhou University, Chuzhou, Anhui 239000, People's Republic of China
| | - Kang Yang
- School of Materials Science and Chemical Engineering, Chuzhou University, Chuzhou, Anhui 239000, People's Republic of China
| | - Yan Ling Qian
- School of Materials Science and Chemical Engineering, Chuzhou University, Chuzhou, Anhui 239000, People's Republic of China
| | - Wei Pu Hong
- School of Materials Science and Chemical Engineering, Chuzhou University, Chuzhou, Anhui 239000, People's Republic of China
| | - Kai Yue Zhang
- School of Materials Science and Chemical Engineering, Chuzhou University, Chuzhou, Anhui 239000, People's Republic of China
| | - Zhen Wei Tao
- School of Materials Science and Chemical Engineering, Chuzhou University, Chuzhou, Anhui 239000, People's Republic of China
| | - Hui Meng
- School of Materials Science and Chemical Engineering, Chuzhou University, Chuzhou, Anhui 239000, People's Republic of China
| | - Wen Jing Ma
- School of Materials Science and Chemical Engineering, Chuzhou University, Chuzhou, Anhui 239000, People's Republic of China
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10
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Rahman A, Mondal S, Modak M, Singh A, Thayat NS, Singh H, Clegg JK, Poswal HK, Haridas V, Thomas SP. Large Local Internal Stress in an Elastically Bent Molecular Crystal Revealed by Raman Shifts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402120. [PMID: 39045899 DOI: 10.1002/smll.202402120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 07/02/2024] [Indexed: 07/25/2024]
Abstract
The structural dynamics involved in the mechanical flexibility of molecular crystals and the internal stress in such flexible materials remain obscure. Here, the study reports an elastically bending lipidated molecular crystal that shows systematic shifts in characteristic vibrational frequencies across the bent crystal region - revealing the nature of structural changes during bending and the local internal stress distribution. The blueshifts in the bond stretching modes (such as C═O and C-H modes) in the inner arc region and redshifts in the outer arc region of the bent crystals observed via micro-Raman mapping are counterintuitive to the bending models based on intermolecular hydrogen bonds. Correlating these shifts with the trends observed from high-pressure Raman studies on the crystal reveals the local stress difference between the inner arc and outer arc regions of the bent crystal to be ≈2 GPa, more than an order of magnitude higher than the previously proposed value in elastically bending crystals. High local internal stress can have direct ramifications on the properties of molecular piezoelectric energy harvesters, actuators, semiconductors, and flexible optoelectronic materials.
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Affiliation(s)
- Atiqur Rahman
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, QLD, 4072, Australia
| | - Srijan Mondal
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Mantu Modak
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Center, Mumbai, 400085, India
| | - Ashi Singh
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Navdeep S Thayat
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Hanuman Singh
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, QLD, 4072, Australia
| | - Himanshu K Poswal
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Center, Mumbai, 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - V Haridas
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, 678623, India
| | - Sajesh P Thomas
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, 110016, India
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11
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Peng J, Zhao Y, Yang J, Liu Y. Crystal Engineering-Driven Sunlight Responsiveness and Flexible Waveguide Transmission. J Phys Chem Lett 2024; 15:7335-7341. [PMID: 38986014 DOI: 10.1021/acs.jpclett.4c01797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
Here, a barbituric acid derivative containing pyrene rings (DPPT) was successfully synthesized, and two types of crystals were prepared by using crystal engineering methods. Orange sheet-like crystals (DPPT-O, observed in visible light), prepared in a DCM/CH3OH solution, exhibited brittleness and weak fluorescence emission, along with sunlight-induced bending and fracturing. Red needle-like crystals (DPPT-R, also observed in visible light), synthesized in a DCM/CH3CN solution, demonstrated elastic properties, strong fluorescence emission, and excellent optical waveguide performance (with an optical loss coefficient of 0.23-0.30 dB mm-1). Single-crystal data analysis revealed that the stacking arrangement of molecules critically influenced the elasticity of the crystals, while the reaction cavity size regulated the photomechanical properties of the crystals. This study achieved effective control over sunlight responsiveness and flexible optical waveguide transmission for the first time, providing innovative insights for the application of homogeneous organic polycrystalline molecular crystals in this field.
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Affiliation(s)
- Jiang Peng
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, TaiYuan 030032, China
| | - Yuheng Zhao
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, TaiYuan 030032, China
| | - Jing Yang
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, TaiYuan 030032, China
| | - Yuanyuan Liu
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, TaiYuan 030032, China
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12
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N Hegde V, J S S, B S C, Benedict Leoma M, N K L. Structural, computational and in silico studies of 4-bromo-3-flurobenzonitrile as anti-Alzheimer and anti-Parkinson agents. J Biomol Struct Dyn 2024; 42:4619-4643. [PMID: 37418246 DOI: 10.1080/07391102.2023.2226755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 05/29/2023] [Indexed: 07/08/2023]
Abstract
A novel dimer of the 4-bromo-3-fluorobenzonitrile was crystallized and studied using a spectroscopic method such as the scanning electron microscope method. The computational simulations substantiated the structural analysis findings. The Hirshfeld surface analysis has been performed for visualizing, exploring and quantifying the intra and inter-molecular interactions that stabilize the crystal packing of the compound. The NBO and QTAIM analyses were applied to study the nature and origin of the attractive forces involved in the crystal structure. Further, the pharmacokinetic properties of the compound were evaluated, indicating good brain-blood barrier and central nervous system penetration capability. Hence, in silico studies was carried out to explore the binding pattern of the titled compound against acetylcholinesterase and butyrylcholinesterase, and tumor necrosis factor-alpha converting enzyme proteins using molecular docking and molecular dynamics simulations approach. Further, the titled compound is compared with standard drugs through molecular docking studies. The in silico studies finally predicts that the compound under investigation may act as a good inhibitor for treating Alzheimer's disease and further in vitro and in vivo studies may provide its therapeutic potential.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - Shyambhargav J S
- Department of Studies in Physics, University of Mysore, Mysuru, India
| | - Chethan B S
- Department of Studies in Physics, University of Mysore, Mysuru, India
| | | | - Lokanath N K
- Department of Studies in Physics, University of Mysore, Mysuru, India
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13
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Mustaphi NEH, Chlouchi A, El Hafi M, Mague JT, Hökelek T, El Monfalouti H, Haoudi A, Mazzah A. Crystal structure determination and analyses of Hirshfeld surface, crystal voids, inter-molecular inter-action energies and energy frameworks of 1-benzyl-4-(methyl-sulfan-yl)-3a,7a-di-hydro-1 H-pyrazolo-[3,4- d]pyrimidine. Acta Crystallogr E Crystallogr Commun 2024; 80:783-788. [PMID: 38974154 PMCID: PMC11223713 DOI: 10.1107/s2056989024005954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Accepted: 06/19/2024] [Indexed: 07/09/2024]
Abstract
The pyrazolo-pyrimidine moiety in the title mol-ecule, C13H12N4S, is planar with the methyl-sulfanyl substituent lying essentially in the same plane. The benzyl group is rotated well out of this plane by 73.64 (6)°, giving the mol-ecule an approximate L shape. In the crystal, C-H⋯π(ring) inter-actions and C-H⋯S hydrogen bonds form tubes extending along the a axis. Furthermore, there are π-π inter-actions between parallel phenyl rings with centroid-to-centroid distances of 3.8418 (12) Å. A Hirshfeld surface analysis of the crystal structure indicates that the most important contributions to the crystal packing are from H⋯H (47.0%), H⋯N/N⋯H (17.6%) and H⋯C/C⋯H (17.0%) inter-actions. The volume of the crystal voids and the percentage of free space were calculated to be 76.45 Å3 and 6.39%, showing that there is no large cavity in the crystal packing. Evaluation of the electrostatic, dispersion and total energy frameworks indicate that the cohesion of the crystal structure is dominated by the dispersion energy contributions.
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Affiliation(s)
- Nour El Hoda Mustaphi
- Organic Chemistry Catalysis and Environmental Laboratory Higher National School of Chemistry Ibn Tofail University KenitraMorocco
| | - Amina Chlouchi
- Organic Chemistry Catalysis and Environmental Laboratory Higher National School of Chemistry Ibn Tofail University KenitraMorocco
| | - Mohamed El Hafi
- Faculty of Medicine and Pharmacy, Mohammed First University, Oujda, Morocco
- Laboratory of Heterocyclic Organic Chemistry URAC 21 Pharmacochemistry Competence Center Av Ibn Battouta BP 1014 Faculty of Sciences Mohammed V University in RabatMorocco
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Türkiye
| | - Hanae El Monfalouti
- Laboratory of Plant Chemistry Organic and Bioorganic Synthesis Faculty of Sciences Mohammed V University in Rabat 4 Avenue Ibn Battouta BP 1014 RP Morocco
| | - Amal Haoudi
- Laboratory of Applied Organic Chemistry, Sidi Mohamed Ben Abdellah University, Faculty Of Science And Technology, Road Immouzer, BP 2202 Fez, Morocco
| | - Ahmed Mazzah
- Science and Technology of Lille USR 3290, Villeneuve d’Ascq cedex, France
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14
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Ghora M, Manna RK, Park SK, Oh S, Kim SI, Park SY, Gierschner J, Varghese S. Molecular Packing Topology and Interactions to Decipher Mechanical Compliances in Dicyano-Distyrylbenzene Derivatives. Chemistry 2024:e202401023. [PMID: 38807442 DOI: 10.1002/chem.202401023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/16/2024] [Accepted: 05/28/2024] [Indexed: 05/30/2024]
Abstract
Flexible optoelectronics is the need of the hour as the market moves toward wearable and conformable devices. Crystalline π-conjugated materials offer high performance as active materials compared to their amorphous counterpart, but they are typically brittle. This poses a significant challenge that needs to be overcome to unfold their potential in optoelectronic devices. Unveiling the molecular packing topology and identifying interaction descriptors that can accommodate strain offers essential guiding principles for developing conjugated materials as active components in flexible optoelectronics. The molecular packing and interaction topology of eight crystal systems of dicyano-distyrylbenzene derivatives are investigated. Face-to-face π-stacks in an inclined orientation relative to the bending surface can accommodate expansion and compression with minimal molecular motion from their equilibrium positions. This configuration exhibits good compliance towards mechanical strain, while a similar structure with a criss-cross arrangement capable of distributing applied strain equally in opposite directions enhances the flexibility. Molecular arrangements that cannot reversibly undergo expansion and compression exhibit brittleness. In the isometric CT crystals, the disproportionate strength of the interactions along the bending plane and orthogonal directions makes these materials sustain a moderate bending strain. These results provide an updated explanation for the elastic bending in semiconducting π-conjugated crystals.
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Affiliation(s)
- Madhubrata Ghora
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata, 700032, India
| | - Ranjit Kumar Manna
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata, 700032, India
| | - Sang Kyu Park
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology, Joellabuk-do, 55324, South Korea
| | - Sangyoon Oh
- Department of Materials Science and Engineering and Research Institute of Advanced Material, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sung-Il Kim
- Department of Materials Science and Engineering and Research Institute of Advanced Material, Seoul National University, Seoul, 08826, Republic of Korea
| | - Soo Young Park
- Department of Materials Science and Engineering and Research Institute of Advanced Material, Seoul National University, Seoul, 08826, Republic of Korea
| | - Johannes Gierschner
- Madrid Institute for Advanced Studies, IMDEA Nanoscience, Calle Faraday 9, Campus Cantoblanco, Madrid, 28049, Spain
| | - Shinto Varghese
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata, 700032, India
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15
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Xiong YA, Duan SS, Hu HH, Yao J, Pan Q, Sha TT, Wei X, Ji HR, Wu J, You YM. Enhancement of phase transition temperature through hydrogen bond modification in molecular ferroelectrics. Nat Commun 2024; 15:4470. [PMID: 38796520 PMCID: PMC11127950 DOI: 10.1038/s41467-024-48948-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 05/20/2024] [Indexed: 05/28/2024] Open
Abstract
Molecular ferroelectrics are attracting great interest due to their light weight, mechanical flexibility, low cost, ease of processing and environmental friendliness. These advantages make molecular ferroelectrics viable alternatives or supplements to inorganic ceramics and polymer ferroelectrics. It is expected that molecular ferroelectrics with good performance can be fabricated, which in turns calls for effective chemical design strategies in crystal engineering. To achieve so, we propose a hydrogen bond modification method by introducing the hydroxyl group, and successfully boost the phase transition temperature (Tc) by at least 336 K. As a result, the molecular ferroelectric 1-hydroxy-3-adamantanammonium tetrafluoroborate [(HaaOH)BF4] can maintain ferroelectricity until 528 K, a Tc value much larger than that of BTO (390 K). Meanwhile, micro-domain patterns, in stable state for 2 years, can be directly written on the film of (HaaOH)BF4. In this respect, hydrogen bond modification is a feasible and effective strategy for designing molecular ferroelectrics with high Tc and stable ferroelectric domains. Such an organic molecule with varied modification sites and the precise crystal engineering can provide an efficient route to enrich high-Tc ferroelectrics with various physical properties.
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Affiliation(s)
- Yu-An Xiong
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, People's Republic of China
| | - Sheng-Shun Duan
- Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, People's Republic of China
| | - Hui-Hui Hu
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, People's Republic of China
| | - Jie Yao
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, People's Republic of China
| | - Qiang Pan
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, People's Republic of China
| | - Tai-Ting Sha
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, People's Republic of China
| | - Xiao Wei
- Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, People's Republic of China
| | - Hao-Ran Ji
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, People's Republic of China
| | - Jun Wu
- Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, People's Republic of China.
| | - Yu-Meng You
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189, People's Republic of China.
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16
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Majumdar D, Philip JE, Gassoumi B, Ayachi S, Abdelaziz B, Tüzün B, Roy S. Supramolecular clumps of μ 2-1,3-acetate bridges of Cd(II)-Salen complex: Synthesis, spectroscopic characterization, crystal structure, DFT quantization's, and antifungal photodynamic therapy. Heliyon 2024; 10:e29856. [PMID: 38707382 PMCID: PMC11066650 DOI: 10.1016/j.heliyon.2024.e29856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 04/11/2024] [Accepted: 04/16/2024] [Indexed: 05/07/2024] Open
Abstract
The article divulges the crystal growth, synthesis, and X-ray structure characterization of one centrosymmetric cadmium complex, [Cd{CdL(μ2-1,3-acetate)}2] using Salen ligand (SL). The complex is further characterized using spectroscopic and analytical techniques, including DRS, SEM-EDX, PXRD, and ICP-MS. The crystallographic study showed that the complex has a monoclinic space P21/c. Addison parameters (Ʈ) show the hexagonal geometry of the central Cd(II) metal ion. Hirshfeld surface and 2-D fingerprint confirm supramolecular contacts despite weak C-H⋯O and C-H···π interactions. Energy frameworks, FMOs, global reactivity parameters, MEP, and energy bandgap explain the complex reactivity outlook. The complex inter- and intramolecular bonding interactions were explored through natural bond orbital (NBO), QTAIM, NCI-RDG, Electron Location Function (ELF), and Localized Orbital Locator (LOL) quantization methods. In addition, the complex and its synthetic components in vitro antibacterial efficacy were investigated using Gram-positive and Gram-negative microbial strains. SAR (structure-activity relationship) correlates with biological potency. Molecular docking assessed antimicrobial potency with proteins S. aureus (PDB ID: 1JIJ), C. albicans (PDB ID: 1M7A), E. coli (PDB ID: 1T9U), P. aeruginosa (PDB ID: 2UV0), and A. Niger (PDB ID: 3K4P). The findings are backed by the Protein-Ligand Interaction Profiler (PLIP). The antifungal potency and cell viability test of C. albicans were conducted using photodynamic therapy (APDT).
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Affiliation(s)
- Dhrubajyoti Majumdar
- Department of Chemistry, Tamralipta Mahavidyalaya, Tamluk, 721636, West Bengal, India
| | | | - Bouzid Gassoumi
- Laboratory of Advanced Materials and Interfaces (LIMA), University of Monastir, Faculty of Sciences of Monastir, Avenue of Environment, 5000, Monastir, Tunisia
| | - Sahbi Ayachi
- Laboratory of Physico-Chemistry of Materials (LR01ES19), Faculty of Sciences, Avenue of the Environment 5019 Monastir, University of Monastir, Tunisia
| | - Balkis Abdelaziz
- Laboratory of Physico-Chemistry of Materials (LR01ES19), Faculty of Sciences, Avenue of the Environment 5019 Monastir, University of Monastir, Tunisia
| | - Burak Tüzün
- Sivas Cumhuriyet University, Sivas Vocational School, Department of Plant and Animal Production, TR-58140, Sivas, Turkey
| | - Sourav Roy
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560012, India
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17
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Seredyuk M, Znovjyak K, Valverde-Muñoz FJ, Muñoz MC, Fritsky IO, Real JA. Rotational order-disorder and spin crossover behaviour in a neutral iron(II) complex based on asymmetrically substituted large planar ionogenic ligand. Dalton Trans 2024; 53:8041-8049. [PMID: 38652019 DOI: 10.1039/d4dt00368c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Octahedrally coordinated spin crossover (SCO) FeII complexes represent an important class of switchable molecular materials. This study presents the synthesis and characterisation of a novel complex, [FeII(ppt-2Fph)2]0·2MeOH, where ppt-2Fph is a new asymmetric ionogenic tridentate planar ligand 2-(5-(2-fluorophenyl)-4H-1,2,4-triazol-3-yl)-6-(1H-pyrazol-1-yl)pyridine. The complex exhibits a hysteretic thermally induced SCO transition at 285 K on cooling and at 293 K on heating, as well as light induced excited spin state trapping (LIESST) at lower temperatures with a relaxation T(LIESST) temperature of 73 K. Single crystal analysis in both spin states shows that the compound undergoes an unusual partial (25%) reversible order-disorder of the asymmetrically substituted phenyl group coupled to the thermal SCO. The highly cooperative SCO transition, analysed by structural energy framework analysis at the B3LYP/6-31G(d,p) theory level, revealed the co-existence of stabilising and destabilising energy variations in the lattice. The observed antagonism of intermolecular interactions and synchronous rotational disorder, which contributes to the overall entropy change, is suggested to be at the origin of the cooperative SCO transition.
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Affiliation(s)
- Maksym Seredyuk
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601 Kyiv, Ukraine.
- Instituto de Ciencia Molecular, Departamento de Química Inorgánica, Universidad de Valencia, 46980 Paterna, Valencia, Spain.
- Enamine Ltd., Winston Churchill Str. 78, 02094 Kyiv, Ukraine
| | - Kateryna Znovjyak
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601 Kyiv, Ukraine.
| | - Francisco Javier Valverde-Muñoz
- Instituto de Ciencia Molecular, Departamento de Química Inorgánica, Universidad de Valencia, 46980 Paterna, Valencia, Spain.
| | - M Carmen Muñoz
- Departamento de Física Aplicada, Universitat Politècnica de València, Camino de Vera s/n, E-46022, Valencia, Spain
| | - Igor O Fritsky
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Street, 01601 Kyiv, Ukraine.
| | - José Antonio Real
- Instituto de Ciencia Molecular, Departamento de Química Inorgánica, Universidad de Valencia, 46980 Paterna, Valencia, Spain.
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18
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El Atrassi Z, Zouhair M, Blacque O, Hökelek T, Haoudi A, Mazzah A, Cherkaoui H, Sebbar NK. Crystal structure, Hirshfeld surface analysis, calculations of inter-molecular inter-action energies and energy frameworks and the DFT-optimized mol-ecular structure of 1-[(1-butyl-1 H-1,2,3-triazol-4-yl)meth-yl]-3-(prop-1-en-2-yl)-1 H-benzimidazol-2-one. Acta Crystallogr E Crystallogr Commun 2024; 80:601-606. [PMID: 38845713 PMCID: PMC11151319 DOI: 10.1107/s2056989024004043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 05/02/2024] [Indexed: 06/09/2024]
Abstract
The benzimidazole entity of the title mol-ecule, C17H21N5O, is almost planar (r.m.s. deviation = 0.0262 Å). In the crystal, bifurcated C-H⋯O hydrogen bonds link individual mol-ecules into layers extending parallel to the ac plane. Two weak C-H⋯π(ring) inter-actions may also be effective in the stabilization of the crystal structure. Hirshfeld surface analysis of the crystal structure reveals that the most important contributions for the crystal packing are from H⋯H (57.9%), H⋯C/C⋯H (18.1%) and H⋯O/O⋯H (14.9%) inter-actions. Hydrogen bonding and van der Waals inter-actions are the most dominant forces in the crystal packing. Evaluation of the electrostatic, dispersion and total energy frameworks indicate that the stabilization of the title compound is dominated via dispersion energy contributions. The mol-ecular structure optimized by density functional theory (DFT) at the B3LYP/6-311 G(d,p) level is compared with the experimentally determined mol-ecular structure in the solid state.
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Affiliation(s)
- Zakaria El Atrassi
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
| | - Mustapha Zouhair
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
| | - Olivier Blacque
- University of Zurich, Department of Chemistry, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Türkiye
| | - Amal Haoudi
- Laboratory of Applied Organic Chemistry, Sidi Mohamed Ben Abdellah University, Faculty of Science And Technology, Road Immouzer, BP 2202 Fez, Morocco
| | - Ahmed Mazzah
- Science and Technology of Lille USR 3290, Villeneuve d’ascq cedex, France
| | - Hassan Cherkaoui
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
| | - Nada Kheira Sebbar
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibnou Zohr University, Agadir, Morocco
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta BP 1014 RP, Rabat, Morocco
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19
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Wei C, Li L, Zheng Y, Wang L, Ma J, Xu M, Lin J, Xie L, Naumov P, Ding X, Feng Q, Huang W. Flexible molecular crystals for optoelectronic applications. Chem Soc Rev 2024; 53:3687-3713. [PMID: 38411997 DOI: 10.1039/d3cs00116d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
The cornerstones of the advancement of flexible optoelectronics are the design, preparation, and utilization of novel materials with favorable mechanical and advanced optoelectronic properties. Molecular crystalline materials have emerged as a class of underexplored yet promising materials due to the reduced grain boundaries and defects anticipated to provide enhanced photoelectric characteristics. An inherent drawback that has precluded wider implementation of molecular crystals thus far, however, has been their brittleness, which renders them incapable of ensuring mechanical compliance required for even simple elastic or plastic deformation of the device. It is perplexing that despite a plethora of reports that have in the meantime become available underpinning the flexibility of molecular crystals, the "discovery" of elastically or plastically deformable crystals remains limited to cases of serendipitous and laborious trial-and-error approaches, a situation that calls for a systematic and thorough assessment of these properties and their correlation with the structure. This review provides a comprehensive and concise overview of the current understanding of the origins of crystal flexibility, the working mechanisms of deformations such as plastic and elastic bending behaviors, and insights into the examples of flexible molecular crystals, specifically concerning photoelectronic changes that occur in deformed crystals. We hope this summary will provide a reference for future experimental and computational efforts with flexible molecular crystals aimed towards improving their mechanical behavior and optoelectronic properties, ultimately intending to advance the flexible optoelectronic technology.
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Affiliation(s)
- Chuanxin Wei
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
| | - Liang Li
- Smart Materials Lab, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates.
| | - Yingying Zheng
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
| | - Lizhi Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
| | - Jingyao Ma
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Man Xu
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Jinyi Lin
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
| | - Linghai Xie
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
- School of Flexible Electronics (SoFE) and Henan Institute of Flexible Electronics (HIFE), Henan University, 379 Mingli Road, Zhengzhou 450046, China
| | - Panče Naumov
- Smart Materials Lab, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates.
- Center for Smart Engineering Materials, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates
- Research Center for Environment and Materials, Macedonian Academy of Sciences and Arts, Bul. Krste Misirkov 2, Skopje MK-1000, Macedonia
- Molecular Design Institute, Department of Chemistry, New York University, 100 Washington Square East, New York, NY 10003, USA
| | - Xuehua Ding
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
| | - Quanyou Feng
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Wei Huang
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
- School of Flexible Electronics (SoFE) and Henan Institute of Flexible Electronics (HIFE), Henan University, 379 Mingli Road, Zhengzhou 450046, China
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China
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20
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Gaile A, Belyakov S, Dūrena R, Griščenko Ņ, Zukuls A, Batenko N. Studies of the Functionalized α-Hydroxy- p-Quinone Imine Derivatives Stabilized by Intramolecular Hydrogen Bond. Molecules 2024; 29:1613. [PMID: 38611892 PMCID: PMC11013408 DOI: 10.3390/molecules29071613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 03/25/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
In this work, reactions between 6,7-dichloropyrido[1,2-a]benzimidazole-8,9-diones with different benzohydrazides were studied. Nucleophilic substitution at C(6) was followed by isomerization and led to α-hydroxy-p-quinone imine derivatives. Synthesized compounds represent a combination of several structural motifs: a benzimidazole core fused with α-hydroxy-p-quinone imine, which contains a benzamide fragment. X-ray crystallography analysis revealed the formation of dimers linked through OH···O interactions and stabilization of the imine form by strong intramolecular NH···N hydrogen bonds. The protonation/deprotonation processes were investigated in a solution using UV-Vis spectroscopy and a 1H NMR titration experiment. Additionally, the electrochemical properties of 6,7-dichloropyrido[1,2-a]benzimidazole-8,9-dione and its α-hydroxy-p-quinone imine derivative as cathode materials were investigated in acidic and neutral environments using cyclic voltammetry measurements. Cathode material based on 6,7-dichloropyrido[1,2-a]benzimidazole-8,9-dione could act as a potentially effective active electrode in aqueous electrolyte batteries; however, further optimization is required.
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Affiliation(s)
- Anastasija Gaile
- Institute of Chemistry and Chemical Technology, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia;
| | - Sergey Belyakov
- Latvian Institute of Organic Chemistry, Aizkraukles Str. 21, LV-1006 Riga, Latvia;
| | - Ramona Dūrena
- Institute of Materials and Surface Engineering, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia; (R.D.); (Ņ.G.); (A.Z.)
| | - Ņikita Griščenko
- Institute of Materials and Surface Engineering, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia; (R.D.); (Ņ.G.); (A.Z.)
| | - Anzelms Zukuls
- Institute of Materials and Surface Engineering, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia; (R.D.); (Ņ.G.); (A.Z.)
| | - Nelli Batenko
- Institute of Chemistry and Chemical Technology, Faculty of Natural Sciences and Technology, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia;
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21
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Tumakuru Nagarajappa L, Chikkappaiahnayaka S, Benedict Leoma M, Isamura BK, Venkatesh K, Singh KR, Sindogi K, Mandayam Anandalwar S, P Sadashiva M. Unraveling the crystal structure, stability and drug likeness of 1,3,4-oxadiazole derivatives against Myelofibrosis: a combined experimental and computational investigation. J Biomol Struct Dyn 2024:1-15. [PMID: 38555733 DOI: 10.1080/07391102.2024.2330013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 01/20/2024] [Indexed: 04/02/2024]
Abstract
Herein, we report the synthesis and characterization of novel 1,3,4-oxadiazole derivatives, 2-methoxybenzyl 5-(4-chlorophenyl)-1,3,4-oxadiazole-2-carboxylate (C1) 2-methoxybenzyl 5-(2-chlorophenyl)-1,3,4-oxadiazole-2-carboxylate (C2), and methoxybenzyl 5-(3-chlorophenyl)-1,3,4-oxadiazole-2-carboxylate (C3) obtained through desulfurative cyclization reaction. The compound C2 was crystallized, and its crystal structure was elucidated using single-crystal X-ray diffraction technique. The Hirshfeld surface analysis was carried out to analyze, visualize and globally appreciate the weak interactions involved in crystal packing. These analyses were complemented by Quantum Theory of Atoms In Molecules (QTAIM) and Reduced Density Gradient (RDG), which allowed us to decipher the nature and types of attractive forces that contribute to maintain the crystal structure of the titled compound. Moreover, the ADME profile of the compound was predicted to assess its drug likeness. Finally, in silico studies were performed to explore the binding affinity of the compounds (C1-3) against Myelofibrosis through molecular docking and molecular dynamic simulations.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Lohith Tumakuru Nagarajappa
- Department of Physics, The National Institute of Engineering, Mysuru, India
- Department of Studies in Physics, University of Mysore, Mysuru, Karnataka, India
| | | | | | | | - Karthik Venkatesh
- Department of Studies in Physics, University of Mysore, Mysuru, Karnataka, India
| | - Krishna Ravi Singh
- Department of Studies in Chemistry, University of Mysore, Mysuru, Karnataka, India
| | - Kishorkumar Sindogi
- Solid state and Structural Chemistry Unit (SSCU), Indian Institute of Science (IISc), Bangalore, India
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22
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Tong J, de Bruyn N, Alieva A, Legge EJ, Boyes M, Song X, Walisinghe AJ, Pollard AJ, Anderson MW, Vetter T, Melle-Franco M, Casiraghi C. Crystallization of molecular layers produced under confinement onto a surface. Nat Commun 2024; 15:2015. [PMID: 38443350 PMCID: PMC10914826 DOI: 10.1038/s41467-024-45900-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 02/07/2024] [Indexed: 03/07/2024] Open
Abstract
It is well known that molecules confined very close to a surface arrange into molecular layers. Because solid-liquid interfaces are ubiquitous in the chemical, biological and physical sciences, it is crucial to develop methods to easily access molecular layers and exploit their distinct properties by producing molecular layered crystals. Here we report a method based on crystallization in ultra-thin puddles enabled by gas blowing, which allows to produce molecular layered crystals with thickness down to the monolayer onto a surface, making them directly accessible for characterization and further processing. By selecting four molecules with different types of polymorphs, we observed exclusive crystallization of polymorphs with Van der Waals interlayer interactions, which have not been observed with traditional confinement methods. In conclusion, the gas blowing approach unveils the opportunity to perform materials chemistry under confinement onto a surface, enabling the formation of distinct crystals with selected polymorphism.
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Affiliation(s)
- Jincheng Tong
- Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK.
| | - Nathan de Bruyn
- Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | - Adriana Alieva
- Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | - Elizabeth J Legge
- National Physical Laboratory, Teddington, Middlesex, TW11 0LW, UK
- Advanced Technology Institute, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Matthew Boyes
- Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | - Xiuju Song
- Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | - Alvin J Walisinghe
- Curtin Institute for Computation, School for Molecular and Life Sciences, Curtin University, Perth, WA, 6845, Australia
| | - Andrew J Pollard
- National Physical Laboratory, Teddington, Middlesex, TW11 0LW, UK
| | - Michael W Anderson
- Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK
- Curtin Institute for Computation, School for Molecular and Life Sciences, Curtin University, Perth, WA, 6845, Australia
| | - Thomas Vetter
- Department of Chemical Engineering and Analytical Sciences, University of Manchester, Manchester, M1 3AL, UK
| | - Manuel Melle-Franco
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, 3810-193, Portugal
| | - Cinzia Casiraghi
- Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK.
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23
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Lamssane H, Haoudi A, Kartah BE, Mazzah A, Mague JT, Hökelek T, Kandri Rodi Y, Sebbar NK. Crystal structure, Hirshfeld surface analysis, calculations of crystal voids, inter-action energy and energy frameworks as well as density functional theory (DFT) calculations of 3-[2-(morpholin-4-yl)eth-yl]-5,5-di-phenyl-imidazolidine-2,4-dione. Acta Crystallogr E Crystallogr Commun 2024; 80:423-429. [PMID: 38584744 PMCID: PMC10993604 DOI: 10.1107/s2056989024002445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 03/14/2024] [Indexed: 04/09/2024]
Abstract
In the title mol-ecule, C21H23N3O3, the imidazolidine ring slightly deviates from planarity and the morpholine ring exhibits the chair conformation. In the crystal, N-H⋯O and C-H⋯O hydrogen bonds form helical chains of mol-ecules extending parallel to the c axis that are connected by C-H⋯π(ring) inter-actions. A Hirshfeld surface analysis reveals that the most important contributions for the crystal packing are from H⋯H (55.2%), H⋯C/C⋯H (22.6%) and H⋯O/O⋯H (20.5%) inter-actions. The volume of the crystal voids and the percentage of free space were calculated to be 236.78 Å3 and 12.71%, respectively. Evaluation of the electrostatic, dispersion and total energy frameworks indicates that the stabilization is dominated by the nearly equal electrostatic and dispersion energy contributions. The DFT-optimized mol-ecular structure at the B3LYP/6-311 G(d,p) level is compared with the experimentally determined mol-ecular structure in the solid state. Moreover, the HOMO-LUMO behaviour was elucidated to determine the energy gap.
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Affiliation(s)
- Houda Lamssane
- Laboratory of Applied Organic Chemistry, Sidi Mohamed Ben Abdellah University, Faculty Of Science And Technology, Road Immouzer, BP 2202 Fez, Morocco
| | - Amal Haoudi
- Laboratory of Applied Organic Chemistry, Sidi Mohamed Ben Abdellah University, Faculty Of Science And Technology, Road Immouzer, BP 2202 Fez, Morocco
| | - Badr Eddine Kartah
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta BP 1014 RP, Morocco
| | - Ahmed Mazzah
- Science and Technology of Lille USR 3290, Villeneuve d’ascq cedex, France
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Türkiye
| | - Youssef Kandri Rodi
- Laboratory of Applied Organic Chemistry, Sidi Mohamed Ben Abdellah University, Faculty Of Science And Technology, Road Immouzer, BP 2202 Fez, Morocco
| | - Nada Kheira Sebbar
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta BP 1014 RP, Morocco
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibnou Zohr University, Agadir, Morocco
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24
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Wang Z, Han W, Shi R, Han X, Zheng Y, Xu J, Bu XH. Mechanoresponsive Flexible Crystals. JACS AU 2024; 4:279-300. [PMID: 38425899 PMCID: PMC10900217 DOI: 10.1021/jacsau.3c00481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/06/2023] [Accepted: 12/15/2023] [Indexed: 03/02/2024]
Abstract
Flexible crystals have gained significant attention owing to their remarkable pliability, plasticity, and adaptability, making them highly popular in various research and application fields. The main challenges in developing flexible crystals lie in the rational design, preparation, and performance optimization of such crystals. Therefore, a comprehensive understanding of the fundamental origins of crystal flexibility is crucial for establishing evaluation criteria and design principles. This Perspective offers a retrospective analysis of the development of flexible crystals over the past two decades. It summarizes the elastic standards and possible plastic bending mechanisms tailored to diverse flexible crystals and analyzes the assessment of their theoretical basis and applicability. Meanwhile, the compatibility between crystal elasticity and plasticity has been discussed, unveiling the immense prospects of elastic/plastic crystals for applications in biomedicine, flexible electronic devices, and flexible optics. Furthermore, this Perspective presents state-of-the-art experimental avenues and analysis methods for investigating molecular interactions in molecular crystals, which is vital for the future exploration of the mechanisms of crystal flexibility.
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Affiliation(s)
- Zhihua Wang
- School
of Materials Science and Engineering, Smart Sensing Interdisciplinary
Science Center, Frontiers Science Center for New Organic Matter, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
| | - Wenqing Han
- School
of Materials Science and Engineering, Smart Sensing Interdisciplinary
Science Center, Frontiers Science Center for New Organic Matter, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
| | - Rongchao Shi
- School
of Materials Science and Engineering, Smart Sensing Interdisciplinary
Science Center, Frontiers Science Center for New Organic Matter, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
| | - Xiao Han
- School
of Materials Science and Engineering, Smart Sensing Interdisciplinary
Science Center, Frontiers Science Center for New Organic Matter, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
| | - Yongshen Zheng
- School
of Materials Science and Engineering, Smart Sensing Interdisciplinary
Science Center, Frontiers Science Center for New Organic Matter, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
| | - Jialiang Xu
- School
of Materials Science and Engineering, Smart Sensing Interdisciplinary
Science Center, Frontiers Science Center for New Organic Matter, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
- Collaborative
Innovation Center of Chemical Science and Engineering, Tianjin 300350, P. R. China
| | - Xian-He Bu
- School
of Materials Science and Engineering, Smart Sensing Interdisciplinary
Science Center, Frontiers Science Center for New Organic Matter, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
- Collaborative
Innovation Center of Chemical Science and Engineering, Tianjin 300350, P. R. China
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25
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Mohamed SK, Siddique SA, Karthikeyan S, Ahmed EA, Omran OA, Mague JT, Al-Salahi R, El Bakri Y. Synthesis, X-ray crystallography, computational investigation on quinoxaline derivatives as potent against adenosine receptor A2AAR. J Biomol Struct Dyn 2024:1-19. [PMID: 38385483 DOI: 10.1080/07391102.2024.2314268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 01/28/2024] [Indexed: 02/23/2024]
Abstract
Quinoxaline represents one of the most important classes of heterocyclic compounds, which have exhibited a wide range of biological activities and industrial importance in many different fields. In this regard, we have synthetized two new quinoxaline derivatives. Their structures were confirmed by single-crystal X-ray analysis. The compounds show potent activity against adenosine receptors A2AAR based on structural activity relationship studies. Further molecular docking, molecular dynamics, ADMET analysis, and DFT (density functional theory) calculations were performed to understand the titled compound's future drug candidacy. DFT computations confirmed the good stability of the synthesized compounds, as evidenced by the optimized molecular geometry, HOMO-LUMO energy gap, and intermolecular interactions. NBO analysis confirmed intermolecular interactions mediated by lone pair, bonding, and anti-bonding orbitals. All DFT findings were consistent with experimental results, indicating that the synthesized molecules are highly stable. These findings suggest that the synthesized compounds are promising candidates for further development as drugs for the treatment of A2AAR-related diseases.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shaaban K Mohamed
- Chemistry and Environmental Division, Manchester Metropolitan University, Manchester, England
| | - Sabir Ali Siddique
- Institute of Chemistry, The Islamia University of Bahawalpur, Baghdad-ul-Jadeed Campus, Bahawalpur, Pakistan
| | - Subramani Karthikeyan
- Centre for Healthcare Advancement, Innovation and Research, Vellore Institute of Technology University, Chennai Campus, Chennai, Tamil Nadu, India
| | - Eman A Ahmed
- Department of Chemistry, Faculty of Science, Sohag University, Sohag, Egypt
| | - Omran A Omran
- Department of Chemistry, Faculty of Science, Sohag University, Sohag, Egypt
| | - Joel T Mague
- Department of Chemistry, Tulane University, New Orleans, LA, USA
| | - Rashad Al-Salahi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Youness El Bakri
- Department of Theoretical and Applied Chemistry, South Ural State University, Chelyabinsk, Russian Federation
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26
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Ejarque D, Calvet T, Font-Bardia M, Pons J. Structural Landscape of α-Acetamidocinnamic Acid Cocrystals with Bipyridine-Based Coformers: Influence of Crystal Packing on Their Thermal and Photophysical Properties. CRYSTAL GROWTH & DESIGN 2024; 24:1746-1765. [PMID: 38405168 PMCID: PMC10885007 DOI: 10.1021/acs.cgd.3c01374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/27/2024]
Abstract
Controlling the supramolecular synthon outcome in systems with different functionalities has been a key factor for the design of supramolecular materials, which also affected their physicochemical properties. In this contribution, we have analyzed the structural landscape of α-acetamidocinnamic acid (HACA) aiming to find its synthon outcome from the competitivity between its acidic and amidic groups. We prepared four multicomponent forms including one dihydrate (HACA·2H2O) and three cocrystals bearing different bipyridine coformers with formulas (HACA)2(1,2-bpe) (1), (HACA)2(4,4'-azpy) (2), and (HACA)2(4,4'-bipy)3 (3) (1,2-bpe = 1,2-bis(4-pyridyl)ethylene; 4,4'-azpy = 4,4'-azopyridine; 4,4'-bipy = 4,4'-bipyridine). First, we applied a virtual screening approach to assess the feasibility of cocrystal formation. Then, we synthesized the cocrystals, via liquid-assisted grinding (LAG) (1 and 2) or solvothermal (3) techniques, and single crystals of HACA, and their four multicomponent forms were obtained showing different synthons and crystal packings. Besides, a Cambridge Structural Database (CSD) search of the cocrystals presenting bipyridine-type coformers and molecules with acid and amide functionalities was performed, and the observed synthon occurrences as well as the possibility of synthon modification by tuning the H-donor/H-acceptor propensity of the acidic and amidic groups were shown. Finally, we measured their thermal and photophysical properties, which were correlated with their structural features.
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Affiliation(s)
- Daniel Ejarque
- Departament
de Química, Universitat Autònoma
de Barcelona, 08193-Bellaterra, Barcelona, Spain
| | - Teresa Calvet
- Departament
de Mineralogia, Petrologia i Geologia Aplicada, Universitat de Barcelona, Martí i Franquès s/n, 08028 Barcelona, Spain
| | - Mercè Font-Bardia
- Unitat
de Difracció de Raig-X, Centres Científics i Tecnològics
de la Universitat de Barcelona (CCiTUB), Universitat de Barcelona, Solé i Sabarís, 1-3, 08028 Barcelona, Spain
| | - Josefina Pons
- Departament
de Química, Universitat Autònoma
de Barcelona, 08193-Bellaterra, Barcelona, Spain
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27
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Kaspiaruk H, Chęcińska L. A triclinic polymorph of miconazole. Acta Crystallogr E Crystallogr Commun 2024; 80:196-200. [PMID: 38333136 PMCID: PMC10848966 DOI: 10.1107/s2056989024000276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 01/08/2024] [Indexed: 02/10/2024]
Abstract
The crystal structure of the new triclinic polymorph of miconazole {MIC; C18H14Cl4N2O; systematic name: (RS)-1-[2-(2,4-di-chloro-benz-yloxy)-2-(2,4-di-chloro-phen-yl)eth-yl]-1H-imidazole} is reported and compared with the monoclinic form of solvent-free miconazole previously reported [Kaspiaruk & Chęcińska (2022 ▸). Acta Cryst. C78, 343-350]. A comparison shows a different orientation of imidazole and one di-chloro-phenyl ring between polymorphic mol-ecules. In the crystal structure of the title compound, only weak halogen bonds and C-H⋯π(arene) inter-actions are found. Hirshfeld surface analysis and energy framework calculations complement the comparison of the two polymorphic forms of the miconazole drug.
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Affiliation(s)
- Hanna Kaspiaruk
- University of Lodz Doctoral School of Exact and Natural Sciences, Narutowicza 68, 90-136 Łódź, Poland
- University of Lodz, Faculty of Chemistry, Pomorska 163/165, 90-236 Łódź, Poland
| | - Lilianna Chęcińska
- University of Lodz, Faculty of Chemistry, Pomorska 163/165, 90-236 Łódź, Poland
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28
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Ait Elmachkouri Y, Irrou E, El Monfalouti H, Mazzah A, Hökelek T, Mague JT, Taha ML, Sebbar NK. Crystal structure, Hirshfeld surface analysis, crystal voids, inter-action energy calculations and energy frameworks and DFT calculations of ethyl 2-cyano-3-(3-hy-droxy-5-methyl-1 H-pyrazol-4-yl)-3-phen-yl-propano-ate. Acta Crystallogr E Crystallogr Commun 2024; 80:240-246. [PMID: 38333130 PMCID: PMC10848982 DOI: 10.1107/s2056989024000744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 01/19/2024] [Indexed: 02/10/2024]
Abstract
The title compound, C16H17N3O3, is racemic as it crystallizes in a centrosymmetric space group (P ), although the trans disposition of substituents about the central C-C bond is established. The five- and six-membered rings are oriented at a dihedral angle of 75.88 (8)°. In the crystal, N-H⋯N hydrogen bonds form chains of mol-ecules extending along the c-axis direction that are connected by inversion-related pairs of O-H⋯N into ribbons. The ribbons are linked by C-H⋯π(ring) inter-actions, forming layers parallel to the ab plane. A Hirshfeld surface analysis indicates that the most important contributions for the crystal packing are from H⋯H (45.9%), H⋯N/N⋯H (23.3%), H⋯C/C⋯H (16.2%) and H⋯O/O⋯H (12.3%) inter-actions. Hydrogen bonding and van der Waals inter-actions are the dominant inter-actions in the crystal packing. The volume of the crystal voids and the percentage of free space were calculated to be 100.94 Å3 and 13.20%, showing that there is no large cavity in the crystal packing. Evaluation of the electrostatic, dispersion and total energy frameworks indicates that the stabilization is dominated by the electrostatic energy contributions in the title compound. Moreover, the DFT-optimized structure at the B3LYP/6-311 G(d,p) level is compared with the experimentally determined mol-ecular structure in the solid state. The HOMO-LUMO behaviour was elucidated to determine the energy gap.
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Affiliation(s)
- Younesse Ait Elmachkouri
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Ezaddine Irrou
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Hanae El Monfalouti
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta BP 1014 RP, Morocco
| | - Ahmed Mazzah
- University of Lille, CNRS, UAR 3290, MSAP, Miniaturization for Synthesis, Analysis and Proteomics, F-59000 Lille, France
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Türkiye
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Mohamed Labd Taha
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Nada Kheira Sebbar
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta BP 1014 RP, Morocco
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29
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Bejoymohandas KS, Redhu A, Sharma CH, SeethaLekshmi S, Divya IS, Kiran MSRN, Thalakulam M, Monti F, Nair RV, Varughese S. Polymorphism-driven Distinct Nanomechanical, Optical, Photophysical, and Conducting Properties in a Benzothiophene-quinoline. Chemistry 2024; 30:e202303558. [PMID: 38037264 DOI: 10.1002/chem.202303558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/30/2023] [Accepted: 11/30/2023] [Indexed: 12/02/2023]
Abstract
Polymorphic forms of organic conjugated small molecules, with their unique molecular shapes, packing arrangements, and interaction patterns, provide an excellent opportunity to uncover how their microstructures influence their observable properties. Ethyl-2-(1-benzothiophene-2-yl)quinoline-4-carboxylate (BZQ) exists as dimorphs with distinct crystal habits - blocks (BZB) and needles (BZN). The crystal forms differ in their molecular arrangements - BZB has a slip-stacked column-like structure in contrast to a zig-zag crystal packing with limited π-overlap in BZN. The BZB crystals characterized by extended π-stacking along [100] demonstrated semiconductor behavior, whereas the BZN, with its zig-zag crystal packing and limited stacking characteristics, was reckoned as an insulator. Monotropically related crystal forms also differ in their nanomechanical properties, with BZB crystals being considerably softer than BZN crystals. This discrepancy in mechanical behavior can be attributed to the distinct molecular arrangements adopted by each crystal form, resulting in unique mechanisms to relieve the strain generated during nanoindentation experiments. Waveguiding experiments on the acicular crystals of BZN revealed the passive waveguiding properties. Excitation of these crystals using a 532 nm laser confirmed the propagation of elastically scattered photons (green) and the subsequent generation of inelastically scattered (orange) photons by the crystals. Further, the dimorphs display dissimilar photoluminescence properties; they are both blue-emissive, but BZN displays twice the quantum yield of BZB. The study underscores the integral role of polymorphism in modulating the mechanical, photophysical, and conducting properties of functional molecular materials. Importantly, our findings reveal the existence of light-emitting crystal polymorphs with varying electric conductivity, a relatively scarce phenomenon in the literature.
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Affiliation(s)
- K S Bejoymohandas
- Chemical Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology Thiruvananthapuram, Kerala, 695019, India
- Institute for Organic Synthesis and Photoreactivity (ISOF), National Research Council of Italy (CNR), Via P. Gobetti 101, I-40129, Bologna, Italy
| | - Ashish Redhu
- Department of Physics, Indian Institute of Technology Ropar, Punjab, 140001, India
| | - Chithra H Sharma
- School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala, 695551, India
| | - Sunil SeethaLekshmi
- Chemical Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology Thiruvananthapuram, Kerala, 695019, India
| | - I S Divya
- Chemical Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology Thiruvananthapuram, Kerala, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - M S R N Kiran
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Chennai, 603203, India
| | - Madhu Thalakulam
- School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala, 695551, India
| | - Filippo Monti
- Institute for Organic Synthesis and Photoreactivity (ISOF), National Research Council of Italy (CNR), Via P. Gobetti 101, I-40129, Bologna, Italy
| | - Rajesh V Nair
- Department of Physics, Indian Institute of Technology Ropar, Punjab, 140001, India
| | - Sunil Varughese
- Chemical Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology Thiruvananthapuram, Kerala, 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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30
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Rharmili N, Abdellaoui O, Ouazzani Chahdi F, Mague JT, Hökelek T, Mazzah A, Kandri Rodi Y, Sebbar NK. Crystal structure, Hirshfeld surface analysis, crystal voids, inter-action energy calculations and energy frameworks, and DFT calculations of 1-(4-methyl-benz-yl)in-do-line-2,3-dione. Acta Crystallogr E Crystallogr Commun 2024; 80:232-239. [PMID: 38333114 PMCID: PMC10848972 DOI: 10.1107/s2056989024000756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 01/19/2024] [Indexed: 02/10/2024]
Abstract
The in-do-line portion of the title mol-ecule, C16H13NO2, is planar. In the crystal, a layer structure is generated by C-H⋯O hydrogen bonds and C-H⋯π(ring), π-stacking and C=O⋯π(ring) inter-actions. The Hirshfeld surface analysis of the crystal structure indicates that the most important contributions for the crystal packing are from H⋯H (43.0%), H⋯C/C⋯H (25.0%) and H⋯O/O⋯H (22.8%) inter-actions. Hydrogen bonding and van der Waals inter-actions are the dominant inter-actions in the crystal packing. The volume of the crystal voids and the percentage of free space were calculated to be 120.52 Å3 and 9.64%, respectively, showing that there is no large cavity in the crystal packing. Evaluation of the electrostatic, dispersion and total energy frameworks indicate that the stabilization is dominated by the dispersion energy contributions in the title compound. Moreover, the DFT-optimized structure at the B3LYP/6-311G(d,p) level is compared with the experimentally determined mol-ecular structure in the solid state.
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Affiliation(s)
- Nohaila Rharmili
- Laboratory of Applied Organic Chemistry, Sidi Mohamed Ben Abdellah University, Faculty Of Science And Technology, Road Immouzer, BP 2202 Fez, Morocco
| | - Omar Abdellaoui
- Laboratory of Applied Organic Chemistry, Sidi Mohamed Ben Abdellah University, Faculty Of Science And Technology, Road Immouzer, BP 2202 Fez, Morocco
| | - Fouad Ouazzani Chahdi
- Laboratory of Applied Organic Chemistry, Sidi Mohamed Ben Abdellah University, Faculty Of Science And Technology, Road Immouzer, BP 2202 Fez, Morocco
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Türkiye
| | - Ahmed Mazzah
- Science and Technology of Lille USR 3290, Villeneuve d’ascq cedex, France
| | - Youssef Kandri Rodi
- Laboratory of Applied Organic Chemistry, Sidi Mohamed Ben Abdellah University, Faculty Of Science And Technology, Road Immouzer, BP 2202 Fez, Morocco
| | - Nada Kheira Sebbar
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibnou Zohr University, Agadir, Morocco
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta B.P. 1014 RP, Rabat, Morocco
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Akkache HEM, Hamdouni N, Boudjada A, Medjroubi ML, Mili A, Jeannin O. Crystal structure, Hirshfeld surface analysis and energy frameworks of 1-[( E)-2-(2-fluoro-phen-yl)diazan-1-yl-idene]naphthalen-2(1 H)-one. Acta Crystallogr E Crystallogr Commun 2024; 80:137-142. [PMID: 38333122 PMCID: PMC10848971 DOI: 10.1107/s2056989024000227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/06/2024] [Indexed: 02/10/2024]
Abstract
The title compound, C16H11N2OF, is a member of the azo dye family. The dihedral angle subtended by the benzene ring and the naphthalene ring system measures 18.75 (7)°, indicating that the compound is not perfectly planar. An intra-molecular N-H⋯O hydrogen bond occurs between the imino and carbonyl groups. In the crystal, the mol-ecules are linked into inversion dimers by C-H⋯O inter-actions. Aromatic π-π stacking between the naphthalene ring systems lead to the formation of chains along [001]. A Hirshfeld surface analysis was undertaken to investigate and qu-antify the inter-molecular inter-actions. In addition, energy frameworks were used to examine the cooperative effect of these inter-molecular inter-actions across the crystal, showing dispersion energy to be the most influential factor in the crystal organization of the compound.
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Affiliation(s)
| | - Noudjoud Hamdouni
- Laboratoire de Cristallographie, Département de Physique, Université Mentouri-Constantine, 25000 Constantine, Algeria
| | - Ali Boudjada
- Laboratoire de Cristallographie, Département de Physique, Université Mentouri-Constantine, 25000 Constantine, Algeria
| | - Mohamed larbi Medjroubi
- Laboratoire de Cristallographie, Département de Physique, Université Mentouri-Constantine, 25000 Constantine, Algeria
| | - Assia Mili
- Unité de Recherche de Chimie de l’Environnement et Moléculaire Structurale, Faculté du Sciences Exactes, Université de Constantine 1, 25000 Constantine, Algeria
| | - Olivier Jeannin
- UMR 6226 CNRS–Université Rennes 1, ‘Sciences Chimiques de Rennes’, Equipe ‘Matière Condensée et Systèmes Electroactifs’, Bâtiment 10C Campus de Beaulieu, 263 Avenue du Général Leclerc, F-35042 Rennes, France
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32
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Majumdar D, Frontera A, Roy S, Sutradhar D. Experimental and Theoretical Survey of Intramolecular Spodium Bonds/σ/π-Holes and Noncovalent Interactions in Trinuclear Zn(II)-Salen Type Complex with OCN - Ions: A Holistic View in Crystal Engineering. ACS OMEGA 2024; 9:1786-1797. [PMID: 38222609 PMCID: PMC10785279 DOI: 10.1021/acsomega.3c08422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/13/2023] [Accepted: 11/28/2023] [Indexed: 01/16/2024]
Abstract
In this work, one new centrosymmetric trinuclear Zn(II) complex 1, [{(OCN)Zn(L)}2Zn], using a salen-type ligand (H2L) in the presence of OCN- was synthesized and characterized via elemental, spectral, SEM-EDX, and single-crystal X-ray diffraction (SCXRD) study. In 1, SCXRD reveals two different stereochemical environments of zinc metal ions; one terminal Zn(II) center adopts square pyramidal geometries with the Addison parameter (τ) 0.095, and the central Zn(II) is tetracoordinated tetrahedral geometry. This article provides evidence of the significance and presence of spodium bonds (SpBs) in solid-state crystal structures involving a pseudotetrahedral environment of the central Zn-atom. X-ray structures reveal intramolecular Zn···O SpBs caused by the methoxy (-OCH3) substituent O-atom adjacent to the coordinated phenoxy O-atom. These noncovalent interactions have been thoroughly studied using density functional theory calculations at the RI-BP86[2]-D3[3]/def2-TZVP level of theory that characterizes the nature of SpBs, including the Baders quantum theory of atoms-in-molecules "QTAIM", molecular electrostatic potential (MEP) surface, and noncovalent index plot (NCI). In addition, a unique complex-isomer-based theoretical model has been vividly employed to estimate the SpBs energy in the complex. Natural bond orbital (NBO) analysis also tries to establish the differentiation between σ-hole and π-hole SpBs' natures more authentically. The complex energy frameworks were used to investigate noncovalent interactions. To better understand the different intermolecular interactions, we conducted a Hirshfeld surface, which revealed N···H (15.4%) and O···H (9.1%) contacts and Zn···O (5.1%) (SpBs).
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Affiliation(s)
- Dhrubajyoti Majumdar
- Department
of Chemistry, Tamralipta Mahavidyalaya, Tamluk, West Bengal 721636, India
| | - Antonio Frontera
- Department
de Quimica, Universitat de les Illes Balears, Cra. de Valldemossa km 7.5, Palma de Mallorca (Baleares) 07122, Spain
| | - Sourav Roy
- Solid
State and Structural Chemistry Unit, Indian
Institute of Science, Bangalore 560012, India
| | - Dipankar Sutradhar
- School
of Advanced Sciences and Languages, VIT
Bhopal University, Kothrikalan, Sehore, Madhya Pradesh 466114, India
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Tumakuru Nagarajappa L, Ravi Singh K, Kabuyaya Isamura B, Vinay Kumar KS, Mandayam Anandalwar S, Sadashiva MP. SARS-CoV-2 Mpro binding profile and drug-likeness of two novel thiazole derivatives: structural elucidation, DFT studies, ADME-T and molecular docking simulations. J Biomol Struct Dyn 2023; 41:11122-11136. [PMID: 36576177 DOI: 10.1080/07391102.2022.2159880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 12/12/2022] [Indexed: 12/29/2022]
Abstract
Two novel thiazole derivatives, ethyl 5-((4-fluorophenyl)carbamoyl)-thiazole-4-carboxylate (2b) and ethyl 5-(p-tolylcarbamoyl)thiazole-4-carboxylate (6b) have been synthesized, and their crystal structures determined by X-ray diffraction. To rationalize their structure, reactivity and druggability, we have performed a series of separate, but complementary studies. Hirshfeld surface and 2D-fingerprint plots were first scrutinized to qualitatively unveil all the intermolecular interactions that ensure their crystal packing. Moreover, topological electron density parameters established from the quantum theory of atoms-in-molecules (QTAIM) and Reduced Density Gradient (RDG) were later relied on to characterize the chemical bonding of these species, in terms of the nature and magnitude of noncovalent interactions developed within their monomeric and dimeric forms. In both structures, C-H…O hydrogen bonds are found to be stronger than other noncovalent interactions. Furthermore, H…H bonding contacts and non-conventional C-H…O hydrogen bonds both exhibit a closed shell nature, and play in crucial role in the stability of the novel thiazoles. The isosurfaces in the intermolecular region furnished by NCI molecular diagram signifies the existence of weak noncovalent interactions. Finally, the potential inhibitory activity of the titled compounds and their drug-likeness are demonstrated by molecular docking and ADME-T calculations respectively. Both compounds adhere to the Lipinski's rule of five and present encouraging pharmacokinetic properties and safety profiles.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - Krishna Ravi Singh
- Department of Studies in Chemistry, University of Mysore, Mysuru, Karnataka, India
| | - Bienfait Kabuyaya Isamura
- Department of Chemistry, The University of Manchester, Manchester, United Kingdom
- Research Center for Theoretical Chemistry and Physics, Faculty of Science, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
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Akila S, Vidhyasagar T, Winfred Jebaraj JP, Thiruvalluvar AA, Rajeswari K. Synthesis, crystal structure and computational analysis of 2,7-bis-(4-chloro-phen-yl)-3,3-dimethyl-1,4-diazepan-5-one. Acta Crystallogr E Crystallogr Commun 2023; 79:1212-1217. [PMID: 38313138 PMCID: PMC10833417 DOI: 10.1107/s2056989023010162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 11/23/2023] [Indexed: 02/06/2024]
Abstract
In the title compound, C19H20Cl2N2O, the seven-membered 1,4-diazepane ring adopts a chair conformation while the 4-chloro-phenyl substituents adopt equatorial orientations. The chloro-phenyl ring at position 7 is disordered over two positions [site occupancies 0.480 (16):0.520 (16)]. The dihedral angle between the two benzene rings is 63.0 (4)°. The methyl groups at position 3 have an axial and an equatorial orientation. The compound exists as a dimer exhibiting inter-molecular N-H⋯O hydrogen bonding with R 2 2(8) graph-set motifs. The crystal structure is further stabilized by C-H⋯O hydrogen bonds together with two C-Cl⋯π (ring) inter-actions. The geometry was optimized by DFT using the B3LYP/6-31 G(d,p) level basis set. In addition, the HOMO and LUMO energies, chemical reactivity parameters and mol-ecular electrostatic potential were calculated at the same level of theory. Hirshfeld surface analysis indicated that the most important contributions to the crystal packing are from H⋯H (45.6%), Cl⋯H/H⋯Cl (23.8%), H⋯C/C⋯H (12.6%), H⋯O/O⋯H (8.7%) and C⋯Cl/Cl⋯C (7.1%) inter-actions. Analysis of the inter-action energies showed that the dispersion energy is greater than the electrostatic energy. A crystal void volume of 237.16 Å3 is observed. A mol-ecular docking study with the human oestrogen receptor 3ERT protein revealed good docking with a score of -8.9 kcal mol-1.
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Affiliation(s)
- Shanmugasundaram Akila
- Department of Chemistry, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India
| | - Thankakan Vidhyasagar
- Department of Chemistry, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India
| | | | - Aravazhi Amalan Thiruvalluvar
- Principal (Retired), Kunthavai Naacchiyaar Government Arts College for Women (Autonomous), Thanjavur 613 007, Tamil Nadu, India
| | - Krishnan Rajeswari
- Department of Chemistry, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India
- PG & Research Department of Chemistry, Government Arts College, Chidambaram 608 102, Tamil Nadu, India
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Lahyaoui M, Haoudi A, Kartah BE, Mazzah A, Hökelek T, Mague JT, Kandri Rodi Y, Sebbar NK. Crystal structure, Hirshfeld surface analysis, inter-molecular inter-action energies, energy frameworks and DFT calculations of 4-amino-1-(prop-2-yn-1-yl)pyrimidin-2(1 H)-one. Acta Crystallogr E Crystallogr Commun 2023; 79:1183-1189. [PMID: 38313136 PMCID: PMC10833410 DOI: 10.1107/s2056989023009933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 11/15/2023] [Indexed: 02/06/2024]
Abstract
In the title mol-ecule, C7H7N3O, the pyrimidine ring is essentially planar, with the propynyl group rotated out of this plane by 15.31 (4)°. In the crystal, a tri-periodic network is formed by N-H⋯O, N-H⋯N and C-H⋯O hydrogen-bonding and slipped π-π stacking inter-actions, leading to narrow channels extending parallel to the c axis. Hirshfeld surface analysis of the crystal structure reveals that the most important contributions for the crystal packing are from H⋯H (36.2%), H⋯C/C⋯H (20.9%), H⋯O/O⋯H (17.8%) and H⋯N/N⋯H (12.2%) inter-actions, showing that hydrogen-bonding and van der Waals inter-actions are the dominant inter-actions in the crystal packing. Evaluation of the electrostatic, dispersion and total energy frameworks indicates that the stabilization is dominated by the electrostatic energy contributions. The mol-ecular structure optimized by density functional theory (DFT) calculations at the B3LYP/6-311 G(d,p) level is compared with the experimentally determined structure in the solid state. The HOMO-LUMO behaviour was also elucidated to determine the energy gap.
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Affiliation(s)
- Mouad Lahyaoui
- Laboratoire de Chimie Organique Appliquée, Université Sidi Mohamed Ben Abdallah, Faculté des Sciences et Techniques, Route d’Immouzzer, BP 2202 Fez, Morocco
| | - Amal Haoudi
- Laboratory Of Applied Organic Chemistry, Sidi Mohamed Ben Abdellah University, Faculty Of Science And Technology, Road Immouzer, BP 2202 Fez, Morocco
| | - Badr Eddine Kartah
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP 1014 RP, Morocco
| | - Ahmed Mazzah
- Science and Technology of Lille USR 3290, Villeneuve d’ascq cedex, France
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Türkiye
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Youssef Kandri Rodi
- Laboratoire de Chimie Organique Appliquée, Université Sidi Mohamed Ben Abdallah, Faculté des Sciences et Techniques, Route dImmouzzer, BP 2202 Fez, Morocco
| | - Nada Kheira Sebbar
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP 1014 RP, Morocco
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
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Zouhair M, El Ghayati L, El Monfalouti H, Abchihi H, Hökelek T, Ahmed M, Mague JT, Sebbar NK. Synthesis, structure and Hirshfeld surface analysis of 1,3-bis-[(1-octyl-1 H-1,2,3-triazol-4-yl)meth-yl]-1 H-benzo[ d]imidazol-2(3 H)-one. Acta Crystallogr E Crystallogr Commun 2023; 79:1179-1182. [PMID: 38313122 PMCID: PMC10833399 DOI: 10.1107/s2056989023009891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 11/14/2023] [Indexed: 02/06/2024]
Abstract
The title mol-ecule, C29H44N8O, adopts a conformation resembling a two-bladed fan with the octyl chains largely in fully extended conformations. In the crystal, C-H⋯O hydrogen bonds form chains of mol-ecules extending along the b-axis direction, which are linked by weak C-H⋯N hydrogen bonds and C-H⋯π inter-actions to generate a three-dimensional network. A Hirshfeld surface analysis of the crystal structure indicates that the most important contributions for the crystal packing are from H⋯H (68.3%), H⋯N/N⋯H (15.7%) and H⋯C/C⋯H (10.4%) inter-actions.
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Affiliation(s)
- Mustapha Zouhair
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
| | - Lhoussaine El Ghayati
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
| | - Hanae El Monfalouti
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP 1014 RP, Morocco
| | - Hicham Abchihi
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Türkiye
| | - Mazzah Ahmed
- Science and Technology of Lille USR 3290, Villeneuve d’ascq cedex, France
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Nada Kheira Sebbar
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta, BP 1014 RP, Morocco
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
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37
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Peng J, Han C, Zhang X, Jia J, Bai J, Zhang Q, Wang Y, Xue P. Mechanical Effects of Elastic Crystals Driven by Natural Sunlight and Force. Angew Chem Int Ed Engl 2023; 62:e202311348. [PMID: 37828622 DOI: 10.1002/anie.202311348] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/11/2023] [Accepted: 10/12/2023] [Indexed: 10/14/2023]
Abstract
Flexible crystals that can capture solar energy and convert it into mechanical energy are promising for a wide range of applications such as information storage and actuators, but obtaining them remains a challenge. Herein, an elastic crystal of a barbiturate derivative was found to be an excellent candidate, demonstrating plastic bending behavior under natural sunlight irradiation. 1 H NMR and high-resolution mass spectrum data of microcrystals before and after light irradiation demonstrated that light-induced [2+2] cycloaddition was the driving force for the photomechanical effects. Interestingly, the crystals retained elastic bending even after light irradiation. This is the first report of flexible crystals that can be driven by natural sunlight and that have both photomechanical properties and elasticity. Furthermore, regulation of the passive light output direction of the crystals and transport of objects by applying mechanical forces and light was demonstrated.
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Affiliation(s)
- Jiang Peng
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of, Ministry of Education & School of Chemistry and Materials Science of, Shanxi Normal University, 030032, Taiyuan, China
| | - Chuchu Han
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of, Ministry of Education & School of Chemistry and Materials Science of, Shanxi Normal University, 030032, Taiyuan, China
| | - Xin Zhang
- Aerospace science & industry defense technology research and test center, 100039, Beijing, China
| | - Junhui Jia
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of, Ministry of Education & School of Chemistry and Materials Science of, Shanxi Normal University, 030032, Taiyuan, China
| | - Jiakun Bai
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of, Ministry of Education & School of Chemistry and Materials Science of, Shanxi Normal University, 030032, Taiyuan, China
| | - Qi Zhang
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of, Ministry of Education & School of Chemistry and Materials Science of, Shanxi Normal University, 030032, Taiyuan, China
| | - Yan Wang
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of, Ministry of Education & School of Chemistry and Materials Science of, Shanxi Normal University, 030032, Taiyuan, China
| | - Pengchong Xue
- Tianjin key laboratory of structure and performance for functional molecules, College of Chemistry, Tianjin Normal University, 300387, Tianjin, China
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Abad N, Al-Ostoot FH, Ashraf S, Chkirate K, Aljohani MS, Alharbi HY, Buhlak S, El Hafi M, Van Meervelt L, Al-Maswari BM, Essassi EM, Ramli Y. Synthesis, crystal structure, DFT, Hirshfeld surface analysis, energy frameworks and in-Silico drug-targeting PFKFB3 kinase of novel triazolequinoxalin derivative (TZQ) as a therapeutic Strategy against cancer. Heliyon 2023; 9:e21312. [PMID: 37920528 PMCID: PMC10618769 DOI: 10.1016/j.heliyon.2023.e21312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 10/14/2023] [Accepted: 10/19/2023] [Indexed: 11/04/2023] Open
Abstract
Overall, drug design is a dynamic and evolving field, with researchers constantly working to improve their understanding of molecular interactions, develop new computational methods, and explore innovative techniques for creating effective and safe medications. The process can involve steps such as the identification of targets, the discovery of lead compounds, lead optimization, preliminary testing, human trials, regulatory approval and finally post-marketing surveillance, all aimed at bringing a new drug from concept to market. In this article, the synthesis of the novel triazolequinoxalin (TZQ) 1-((1-hexyl-1H-1,2,3-triazol-5-yl)methyl)-3-phenylquinoxalin-2(1H)-one (4) is reported. The structure has been identified with a variety of spectroscopic methods (1H, 13C NMR, and LC-MS) and finally, the structure has been determined by X-ray diffraction (XRD) studies. The TZQ molecule has crystallized in the monoclinic space C2/c group with unit cell dimensions a = 41.201(2) Å, b = 10.6339(6) Å, c = 9.4997(4) Å, β = 93.904(4). The crystal structure is stabilized by intermolecular interactions (N-H ⋯ O and N-H … Cg) occurring within the molecule. The presence of these intermolecular interactions is evaluated through analysis of Hirshfeld surfaces (HS) and two-dimensional (2D) chemical fingerprints map. Additionally, energy frameworks were employed to identify the prevailing interaction energy influencing the molecular arrangement. Density Functional Theory (DFT) calculations were computed to establish concurrence between theoretical and experimental results. Furthermore, the HOMO-LUMO energy levels were determined using the B3LYP/6-31+G(d, p) level of theory. Finally, molecular docking was used to predict the anti-cancer activity of the compound (4) against PFKFB3 kinase and presented noticeable hydrophilic and hydrophobic interactions at the active site region.
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Affiliation(s)
- Nadeem Abad
- Department of Biochemistry, Faculty of Education & Science, Al-Baydha University, Yemen
- Laboratory of Heterocyclic Organic Chemistry URAC 21, Pharmacochemistry Competence Center, Av. Ibn Battouta, BP 1014, Faculty of Sciences, Mohammed V University in Rabat, 10010, Morocco
| | - Fares Hezam Al-Ostoot
- Department of Biochemistry, Faculty of Education & Science, Al-Baydha University, Yemen
| | - Sajda Ashraf
- Dr.PanjwaniCenter for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Karim Chkirate
- Laboratory of Heterocyclic Organic Chemistry URAC 21, Pharmacochemistry Competence Center, Av. Ibn Battouta, BP 1014, Faculty of Sciences, Mohammed V University in Rabat, 10010, Morocco
| | - Majed S. Aljohani
- Department of Chemistry, Faculty of Science, Taibah University, Yanbu, Saudi Arabia
| | - Hussam Y. Alharbi
- Department of Chemistry, Faculty of Science, Taibah University, Yanbu, Saudi Arabia
| | - Shafeek Buhlak
- Department of Chemistry, Abantİzzet Baysal University, 14280 Bolu, Turkey
| | - Mohamed El Hafi
- Laboratory of Heterocyclic Organic Chemistry URAC 21, Pharmacochemistry Competence Center, Av. Ibn Battouta, BP 1014, Faculty of Sciences, Mohammed V University in Rabat, 10010, Morocco
| | - Luc Van Meervelt
- Laboratory of Biomolecular Architecture, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, B-3001, Belgium
| | - Basheer M. Al-Maswari
- Department of Chemistry, Yuvaraja's College, University of Mysore, Mysuru, Karnataka 570005, India
| | - El Mokhtar Essassi
- Laboratory of Heterocyclic Organic Chemistry URAC 21, Pharmacochemistry Competence Center, Av. Ibn Battouta, BP 1014, Faculty of Sciences, Mohammed V University in Rabat, 10010, Morocco
| | - Youssef Ramli
- Laboratory of Medicinal Chemistry, Drug Sciences Research Center, Faculty of Medicine and Pharmacy, Mohammed V University in Rabat, Morocco
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Kumar L, Dash SG, Leko K, Trzybiński D, Bregović N, Cinčić D, Arhangelskis M. Elucidating mechanochemical reactivity of a ternary halogen-bonded cocrystal system by computational and calorimetric studies. Phys Chem Chem Phys 2023; 25:28576-28580. [PMID: 37877228 DOI: 10.1039/d3cp04358d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Discovery of a halogen-bonded ternary cocrystal of 1,3,5-trifluoro-2,4,6-triiodobenzene with pyrazine and triphenylphosphine sulfide has revealed a complex landscape of multicomponent phases, all achievable by mechanochemical interconversion. The observed solid-state reaction pathways were explained by periodic density-functional calculations and comprehensive intermolecular interaction analysis, supported by dissolution calorimetry measurements.
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Affiliation(s)
- Lavanya Kumar
- Faculty of Chemistry, University of Warsaw, 1 Pasteura Street, Warsaw 02-093, Poland.
| | - Sibananda G Dash
- Faculty of Chemistry, University of Warsaw, 1 Pasteura Street, Warsaw 02-093, Poland.
| | - Katarina Leko
- Faculty of Science, Department of Chemistry, University of Zagreb, Horvatovac 102a, Zagreb HR-10000, Croatia.
| | - Damian Trzybiński
- Biological and Chemical Research Centre, University of Warsaw, 101 Żwirki i Wigury Street, Warsaw 02-089, Poland
| | - Nikola Bregović
- Faculty of Science, Department of Chemistry, University of Zagreb, Horvatovac 102a, Zagreb HR-10000, Croatia.
| | - Dominik Cinčić
- Faculty of Science, Department of Chemistry, University of Zagreb, Horvatovac 102a, Zagreb HR-10000, Croatia.
| | - Mihails Arhangelskis
- Faculty of Chemistry, University of Warsaw, 1 Pasteura Street, Warsaw 02-093, Poland.
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40
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Irrou E, Ait Elmachkouri Y, Mazzah A, Hökelek T, Haoudi A, Mague JT, Taha ML, Sebbar NK. Crystal structure, Hirshfeld surface and crystal void analysis, inter-molecular inter-action energies, DFT calculations and energy frameworks of 2 H-benzo[ b][1,4]thia-zin-3(4 H)-one 1,1-dioxide. Acta Crystallogr E Crystallogr Commun 2023; 79:1037-1043. [PMID: 37936855 PMCID: PMC10626949 DOI: 10.1107/s205698902300868x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 10/03/2023] [Indexed: 11/09/2023]
Abstract
In the title mol-ecule, C8H7NO3S, the nitro-gen atom has a planar environment, and the thia-zine ring exhibits a screw-boat conformation. In the crystal, corrugated layers of mol-ecules parallel to the ab plane are formed by N-H⋯O and C-H⋯O hydrogen bonds together with C-H⋯π(ring) and S=O⋯π(ring) inter-actions. The layers are connected by additional C-H⋯O hydrogen bonds and π-stacking inter-actions. Hirshfeld surface analysis indicates that the most important contributions for the crystal packing are from H⋯O/O⋯H (49.4%), H⋯H (23.0%) and H⋯C/C⋯H (14.1%) inter-actions. The volume of the crystal voids and the percentage of free space were calculated as 75.4 Å3 and 9.3%. Density functional theory (DFT) computations revealed N-H⋯O and C-H⋯O hydrogen-bonding energies of 43.3, 34.7 and 34.4 kJ mol-1, respectively. Evaluation of the electrostatic, dispersion and total energy frameworks indicate that the stabilization is dominated via the electrostatic energy contribution. Moreover, the DFT-optimized structure at the B3LYP/ 6-311 G(d,p) level is compared with the experimentally determined mol-ecular structure in the solid state. The HOMO-LUMO behaviour was elucidated to determine the energy gap.
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Affiliation(s)
- Ezaddine Irrou
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Younesse Ait Elmachkouri
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Ahmed Mazzah
- University of Lille, CNRS, UAR 3290, MSAP, Miniaturization for Synthesis, Analysis and Proteomics, F-59000 Lille, France
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Türkiye
| | - Amal Haoudi
- Laboratory of Applied Organic Chemistry, Faculty of Science and Technology, University of Sidi Mohamed Ben Abdellah BP 2202, Fez, Morocco
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Mohamed Labd Taha
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Nada Kheira Sebbar
- Laboratory of Organic and Physical Chemistry, Applied Bioorganic Chemistry Team, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
- Laboratory of Heterocyclic Organic Chemistry, Medicines Science Research Center, Pharmacochemistry Competence Center, Mohammed V University in Rabat, Faculté des Sciences, Av. Ibn Battouta, BP 1014, Rabat, Morocco
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41
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Dyba A, Wiącek E, Nowak M, Janczak J, Nartowski KP, Braun DE. Metronidazole Cocrystal Polymorphs with Gallic and Gentisic Acid Accessed through Slurry, Atomization Techniques, and Thermal Methods. CRYSTAL GROWTH & DESIGN 2023; 23:8241-8260. [PMID: 37937188 PMCID: PMC10626573 DOI: 10.1021/acs.cgd.3c00951] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/26/2023] [Indexed: 11/09/2023]
Abstract
In this study, key features of metronidazole (MNZ) cocrystal polymorphs with gallic acid (GAL) and gentisic acid (GNT) were elucidated. Solvent-mediated phase transformation experiments in 30 solvents with varying properties were employed to control the polymorphic behavior of the MNZ cocrystal with GAL. Solvents with relative polarity (RP) values above 0.35 led to cocrystal I°, the thermodynamically stable form. Conversely, solvents with RP values below 0.35 produced cocrystal II, which was found to be only 0.3 kJ mol-1 less stable in enthalpy. The feasibility of electrospraying, including solvent properties and process conditions required, and spray drying techniques to control cocrystal polymorphism was also investigated, and these techniques were found to facilitate exclusive formation of the metastable MNZ-GAL cocrystal II. Additionally, the screening approach resulted in a new, high-temperature polymorph I of the MNZ-GNT cocrystal system, which is enantiotropically related to the already known form II°. The intermolecular energy calculations, as well as the 2D similarity between the MNZ-GAL polymorphs and the 3D similarity between MNZ-GNT polymorphs, rationalized the observed transition behaviors. Furthermore, the evaluation of virtual cocrystal screening techniques identified molecular electrostatic potential calculations as a supportive tool for coformer selection.
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Affiliation(s)
- Aleksandra
J. Dyba
- Institute
of Pharmacy, University of Innsbruck, Innrain 52c, 6020 Innsbruck, Austria
- Department
of Drug Form Technology, Wroclaw Medical
University, Borowska 211A, 50-556 Wroclaw, Poland
| | - Ewa Wiącek
- Department
of Drug Form Technology, Wroclaw Medical
University, Borowska 211A, 50-556 Wroclaw, Poland
| | - Maciej Nowak
- Department
of Drug Form Technology, Wroclaw Medical
University, Borowska 211A, 50-556 Wroclaw, Poland
| | - Jan Janczak
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, Okolna 2, 50-950 Wroclaw, Poland
| | - Karol P. Nartowski
- Department
of Drug Form Technology, Wroclaw Medical
University, Borowska 211A, 50-556 Wroclaw, Poland
- School
of Pharmacy, University of East Anglia, Norwich Research Park, NR4 7TJ Norwich, U.K.
| | - Doris E. Braun
- Institute
of Pharmacy, University of Innsbruck, Innrain 52c, 6020 Innsbruck, Austria
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42
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Gaile A, Belyakov S, Rjabovs V, Mihailovs I, Turovska B, Batenko N. Investigation of Weak Noncovalent Interactions Directed by the Amino Substituent of Pyrido- and Pyrimido-[1,2- a]benzimidazole-8,9-diones. ACS OMEGA 2023; 8:40960-40971. [PMID: 37929094 PMCID: PMC10621016 DOI: 10.1021/acsomega.3c07005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 09/26/2023] [Indexed: 11/07/2023]
Abstract
Quinones are small redox-active molecules that are able to form intra- and intermolecular interactions both in the solid state and in solution. On the basis of 6-amino-substituted pyrido- and pyrimido-[1,2-a]benzimidazole-8,9-diones, weak interactions were investigated by single-crystal X-ray and 1H NMR spectroscopy methods. Crystallization of quinone derivatives containing a -NH-CH2- fragment led to the formation of both chiral and achiral crystals. The presence of two forms with (endo form) and without (exo form) an intramolecular hydrogen bond was experimentally detected by X-ray crystallography analysis and variable-temperature (VT) 1H NMR experiments in the cases of isopentylamino- and benzylamino-substituted derivatives. Interestingly, the exo form dominates both in the solid state and in solution.
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Affiliation(s)
- Anastasija Gaile
- Riga
Technical University, Faculty of Materials Science and Applied Chemistry, 3/7 Paula Valdena St., Riga LV-1048, Latvia
| | - Sergey Belyakov
- Latvian
Institute of Organic Chemistry, 21 Aizkraukles St., Riga LV-1006, Latvia
| | - Vita̅lijs Rjabovs
- Riga
Technical University, Faculty of Materials Science and Applied Chemistry, 3/7 Paula Valdena St., Riga LV-1048, Latvia
| | - Igors Mihailovs
- Riga
Technical University, Faculty of Computer Science and Information
Technology, 10 Zunda
krastmala, Riga LV-1048, Latvia
- University
of Latvia, Institute of Solid State Physics, 8 Ķengaraga St., Riga LV-1063, Latvia
| | - Baiba Turovska
- Latvian
Institute of Organic Chemistry, 21 Aizkraukles St., Riga LV-1006, Latvia
| | - Nelli Batenko
- Riga
Technical University, Faculty of Materials Science and Applied Chemistry, 3/7 Paula Valdena St., Riga LV-1048, Latvia
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43
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Mishra MK, Mahur P, Manimunda P, Mishra K. Recent Advances in Nanomechanical Measurements and Their Application for Pharmaceutical Crystals. Mol Pharm 2023; 20:4848-4867. [PMID: 37642458 DOI: 10.1021/acs.molpharmaceut.3c00441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Mechanical behavior of pharmaceutical crystals directly impacts the formulation development and manufacturing of drug products. The understanding of crystal structure-mechanical behavior of pharmaceutical and molecular crystals has recently gained substantial attention among pharmaceutical and materials scientists with the advent of advanced nanomechanical testing instruments like nanoindentation. For the past few decades, instrumented nanoindentation was a popular technique for measuring the mechanical properties of thin films and small-length scale materials. More recently it is being implemented to investigate the mechanical properties of pharmaceutical crystals. Integration of correlative microscopy techniques and environmental control opened the door for advanced structure-property correlation under processing conditions. Preventing the degradation of active pharmaceutical ingredients from external factors such as humidity, temperature, or pressure is important during processing. This review deals with the recent developments in the synchronized nanomechanical measurements of pharmaceutical crystals toward the fast and effective development of high-quality pharmaceutical drug products. This review also summarizes some recent reports to intensify how one can design and control the nanomechanical properties of pharmaceutical solids. Measurement challenges and the scope for studying nanomechanical properties of pharmaceutical crystals using nanoindentation as a function of crystal structure and in turn to develop fundamental knowledge in the structure-property relationship with the implications for drug manufacturing and development are discussed in this review. This review further highlights recently developed capabilities in nanoindentation, for example, variable temperature nanoindentation testing, in situ imaging of the indented volume, and nanoindentation coupled Raman spectroscopy that can offer new quantitative details on nanomechanical behavior of crystals and will play a decisive role in the development of coherent theories for nanomechanical study of pharmaceutical crystal.
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Affiliation(s)
- Manish Kumar Mishra
- Department of Chemistry, School of Advanced Sciences (SAS), VIT University, Vellore 632014, Tamil Nadu, India
| | - Pinki Mahur
- Department of Chemistry, School of Advanced Sciences (SAS), VIT University, Vellore 632014, Tamil Nadu, India
| | | | - Kamini Mishra
- Department of Chemistry, School of Advanced Sciences (SAS), VIT University, Vellore 632014, Tamil Nadu, India
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El-Mrabet A, Haoudi A, Dalbouha S, Skalli MK, Hökelek T, Capet F, Kandri Rodi Y, Mazzah A, Sebbar NK. Crystal structure, Hirshfeld surface analysis, inter-action energy and energy framework calculations, as well as density functional theory (DFT) com-putation, of methyl 2-oxo-1-(prop-2-yn-yl)-1,2-di-hydro-quinoline-4-carboxyl-ate. Acta Crystallogr E Crystallogr Commun 2023; 79:883-889. [PMID: 37817963 PMCID: PMC10561202 DOI: 10.1107/s2056989023007557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 08/29/2023] [Indexed: 10/12/2023]
Abstract
In the title mol-ecule, C14H11NO3, the di-hydro-quinoline core deviates slightly from planarity, indicated by the dihedral angle of 1.07 (3)° between the two six-membered rings. In the crystal, layers of mol-ecules almost parallel to the bc plane are formed by C-H⋯O hydro-gen bonds. These are joined by π-π stacking inter-actions. A Hirshfeld surface analysis revealed that the most important contributions to the crystal packing are from H⋯H (36.0%), H⋯C/C⋯H (28.9%) and H⋯O/O⋯H (23.5%) inter-actions. The evaluation of the electrostatic, dispersion and total energy frameworks indicates that the stabilization is dominated by the dispersion energy contribution. Moreover, the mol-ecular structure optimized by density functional theory (DFT) at the B3LYP/6-311G(d,p) level is com-pared with the experimentally determined mol-ecular structure in the solid state. The HOMO-LUMO behaviour was elucidated to determine the energy gap.
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Affiliation(s)
- Ayoub El-Mrabet
- Laboratory of Applied Organic Chemistry, Faculty of Science and Technology, University of Sidi Mohamed Ben Abdellah, BP 2202, Fez, Morocco
| | - Amal Haoudi
- Laboratory of Applied Organic Chemistry, Faculty of Science and Technology, University of Sidi Mohamed Ben Abdellah, BP 2202, Fez, Morocco
| | - Samira Dalbouha
- Laboratory of Organic Chemistry and Physical Chemistry, Research Team: Molecular Modeling, Materials and Environment, Department of Chemistry, Faculty of Sciences, University Ibn Zohr in Agadir, BP 8106 Agadir, Morocco
- Laboratory of Spectroscopy, Molecular Modeling, Materials, Nanomaterials, Water and Environment, CERNE2D, Faculty of Sciences, Mohammed V University in Rabat, Av. Ibn Battouta, BP 1014, Rabat, Morocco
| | - Mohamed Khalid Skalli
- Laboratory of Applied Organic Chemistry, Faculty of Science and Technology, University of Sidi Mohamed Ben Abdellah, BP 2202, Fez, Morocco
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Türkiye
| | - Frederic Capet
- University of Lille, CNRS, UMR 8181, UCCS, Unité de catalyse et Chimie du solide, F-59000 Lille, France
| | - Youssef Kandri Rodi
- Laboratory of Applied Organic Chemistry, Faculty of Science and Technology, University of Sidi Mohamed Ben Abdellah, BP 2202, Fez, Morocco
| | - Ahmed Mazzah
- University of Lille, CNRS, UAR 3290, MSAP, Miniaturization for Synthesis, Analysis and Proteomics, F-59000 Lille, France
| | - Nada Kheira Sebbar
- Laboratoire de Chimie Bioorganique Appliquée, Faculté des Sciences, Université Ibnou Zohr, Agadir, Morocco
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45
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Asha S, Sandhya KS, Abhilash A, Achuthsankar NS, Suma S, Sudarsanakumar MR. Insights on the structural characteristics and molecular dynamic studies of methyl vanillin Schiff base bio-compounds. J Biomol Struct Dyn 2023:1-15. [PMID: 37771157 DOI: 10.1080/07391102.2023.2259492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 09/11/2023] [Indexed: 09/30/2023]
Abstract
A new crystalline form of Schiff base, N-cyclohexyl-1-(3,4-dimethoxyphenyl)methanimine (CHADMB) was obtained from methanolic solution of cylohexylamine and (methylvanillin) 3,4dimethoxybenzaldehyde. Single crystal X-ray diffraction study reveals that the compound crystallized in monoclinic crystal system with P21/c space group having four molecules per unit cell (Z = 4). Hirshfeld surface (HS) analysis and 2D fingerprint plots reveals that weak non-covalent interactions are responsible for crystal packing. The UV-Vis spectroscopy study reveals that the optical band gap of the compound is 4.25 eV. The dielectric properties were studied as a function of frequency at room temperature and the results show that these properties can be exploited for optoelectronic applications. Thermal stability of the compound is revealed by thermogravimetric and differential thermogravimetric analysis. The in vitro antimicrobial activity against Gram negative (E. coli and P. aeruginosa and Gram positive (S. aureus ) bacterial strains and two fungal strains (C. albicans and A. niger) were studied by agar well diffusion method. It is found that the Schiff base is inhibiting the growth of the tested species to varying degrees. Molecular docking studies indicate that alkyl-pi and pi-pi weak interactions enhance the binding affinity of Schiff base-protein complexes. Molecular dynamics study reveals interaction of CHADMB complexed with bacterial protein, EC showed maximum stability which is in agreement with experimental result.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- S Asha
- Department of Chemistry, Sree Narayana College, Chempazhanthy, Research centre, University of Kerala, Thiruvananthapuram, India
| | - K S Sandhya
- Department of Computational Biology and Bioinformatics, University of Kerala, Thiruvananthapuram, India
| | - A Abhilash
- Department of Zoology, Government College Kariavattom, Thiruvananthapuram, India
| | - Nair S Achuthsankar
- Department of Computational Biology and Bioinformatics, University of Kerala, Thiruvananthapuram, India
| | - S Suma
- Department of Chemistry, Sree Narayana College, Chempazhanthy, Research centre, University of Kerala, Thiruvananthapuram, India
| | - M R Sudarsanakumar
- Department of Chemistry, Mahatma Gandhi College, Thiruvananthapuram, India
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46
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Riaz M, Ali A, Ashfaq M, Ibrahim M, Akram N, Tahir MN, Kuznetsov A, Rodríguez L, Sameeh MY, Assiri MA, Torre AFDL. Polymorphs of Substituted p-Toluenesulfonanilide: Synthesis, Single-Crystal Analysis, Hirshfeld Surface Exploration, and Theoretical Investigation. ACS OMEGA 2023; 8:35307-35320. [PMID: 37779999 PMCID: PMC10536877 DOI: 10.1021/acsomega.3c04957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 09/07/2023] [Indexed: 10/03/2023]
Abstract
Polymorphism is an exciting feature of chemical systems where a compound can exist in different crystal forms. The present investigation is focused on the two polymorphic forms, triclinic (MSBT) and monoclinic (MSBM), of ethyl 3-iodo-4-((4-methylphenyl)sulfonamido)benzoate prepared from ethyl 4-amino-3-iodobenzoate. The prepared polymorphs were unambiguously confirmed by single-crystal X-ray diffraction (SC-XRD) analysis. According to the SC-XRD results, the molecular configurations of both structures are stabilized by intramolecular N-H···I and C-H···O bonding. The crystal packing of MSBT is different as compared to the crystal packing of MSBM because MSBT is crystallized in the triclinic crystal system with the space group P1̅, whereas MSBM is crystallized in the monoclinic crystal system with the space group P21/c. The molecules of MSBT are interlinked in the form of dimers through N-H···O bonding to form R22(8) loops, while the MSBM molecules are connected with each other in the form of an infinite chain through C-H···O bonding. The crystal packing of both compounds is further stabilized by off-set π···π stacking interactions between phenyl rings, which is found stronger in MSBM as compared to in MSBT. Moreover, Hirshfeld surface exploration of the polymorphs was carried out, and the results were compared with the closely related literature structure. Accordingly, the supramolecular assembly of these polymorphs is mainly stabilized by noncovalent interactions or intermolecular interactions. Furthermore, a density functional theory (DFT) study was also carried out, which provided good support for the SC-XRD and Hirshfeld studies, suggesting the formation of both intramolecular and intermolecular interactions for both compounds.
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Affiliation(s)
- Mehreen Riaz
- Department
of Applied Chemistry, Government College
University Faisalabad, 38000 Faisalabad, Pakistan
| | - Akbar Ali
- Department
of Chemistry, Government College University
Faisalabad, 38000 Faisalabad, Pakistan
| | - Muhammad Ashfaq
- Department
of Physics, University of Sargodha, 40100 Sargodha, Pakistan
| | - Muhammad Ibrahim
- Department
of Applied Chemistry, Government College
University Faisalabad, 38000 Faisalabad, Pakistan
| | - Nadia Akram
- Department
of Chemistry, Government College University
Faisalabad, 38000 Faisalabad, Pakistan
| | | | - Aleksey Kuznetsov
- Departamento
de Química, Campus Santiago Vitacura, Universidad Técnica Federico Santa María, Vitacura 7660251, Chile
| | - Lyanne Rodríguez
- Department
of Clinical Biochemistry and Immunohaematology, Thrombosis Research
Center, Medical Technology School, Faculty of Health Sciences, Universidad de Talca, Talca 3460000, Chile
| | - Manal Y. Sameeh
- Chemistry
Department, Faculty of Applied Sciences, Al-Leith University College, Umm Al-Qura University, Makkah 24831, Saudi Arabia
| | - Mohammed A. Assiri
- Research
center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61514, Saudi Arabia
- Department
of Chemistry, Faculty of Science, King Khalid
University, P.O. Box 9004, Abha 61413, Saudi Arabia
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Göktürk T, Sakallı Çetin E, Hökelek T, Pekel H, Şensoy Ö, Aksu EN, Güp R. Synthesis, Structural Investigations, DNA/BSA Interactions, Molecular Docking Studies, and Anticancer Activity of a New 1,4-Disubstituted 1,2,3-Triazole Derivative. ACS OMEGA 2023; 8:31839-31856. [PMID: 37692230 PMCID: PMC10483525 DOI: 10.1021/acsomega.3c03355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 08/09/2023] [Indexed: 09/12/2023]
Abstract
We report herein a new 1,2,3-triazole derivative, namely, 4-((1-(3,4-dichlorophenyl)-1H-1,2,3-triazol-4-yl)methoxy)-2-hydroxybenzaldehyde, which was synthesized by copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC). The structure of the compound was analyzed using Fourier transform infrared spectroscopy (FTIR), 1H NMR, 13C NMR, UV-vis, and elemental analyses. Moreover, X-ray crystallography studies demonstrated that the compound adapted a monoclinic crystal system with the P21/c space group. The dominant interactions formed in the crystal packing were found to be hydrogen bonding and van der Waals interactions according to Hirshfeld surface (HS) analysis. The volume of the crystal voids and the percentage of free spaces in the unit cell were calculated as 152.10 Å3 and 9.80%, respectively. The evaluation of energy frameworks showed that stabilization of the compound was dominated by dispersion energy contributions. Both in vitro and in silico investigations on the DNA/bovine serum albumin (BSA) binding activity of the compound showed that the CT-DNA binding activity of the compound was mediated via intercalation and BSA binding activity was mediated via both polar and hydrophobic interactions. The anticancer activity of the compound was also tested by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay using human cell lines including MDA-MB-231, LNCaP, Caco-2, and HEK-293. The compound exhibited more cytotoxic activity than cisplatin and etoposide on Caco-2 cancer cell lines with an IC50 value of 16.63 ± 0.27 μM after 48 h. Annexin V suggests the induction of cell death by apoptosis. Compound 3 significantly increased the loss of mitochondrial membrane potential (MMP) levels in Caco-2 cells, and the reactive oxygen species (ROS) assay proved that compound 3 could induce apoptosis by ROS generation.
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Affiliation(s)
- Tolga Göktürk
- Department
of Chemistry, Muğla Sıtkı
Koçman University, 48000 Muğla, Türkiye
| | - Esin Sakallı Çetin
- Department
of Medical Biology, Muğla Sıtkı
Koçman University, 48000 Muğla, Türkiye
| | - Tuncer Hökelek
- Department
of Physics, Hacettepe University, 06800 Ankara, Türkiye
| | - Hanife Pekel
- Department
of Pharmacy Services, Vocational School of Health Services, Istanbul Medipol University, 34810 Istanbul, Türkiye
| | - Özge Şensoy
- Department
of Computer Engineering, Istanbul Medipol
University, 34000 Istanbul, Türkiye
| | - Ebru Nur Aksu
- Department
of Medical Biology, Muğla Sıtkı
Koçman University, 48000 Muğla, Türkiye
| | - Ramazan Güp
- Department
of Chemistry, Muğla Sıtkı
Koçman University, 48000 Muğla, Türkiye
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48
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Jelsch C, Bibila Mayaya Bisseyou Y. Deciphering the driving forces in crystal packing by analysis of electrostatic energies and contact enrichment ratios. IUCRJ 2023; 10:557-567. [PMID: 37449972 PMCID: PMC10478513 DOI: 10.1107/s2052252523005675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/26/2023] [Indexed: 07/18/2023]
Abstract
Hirshfeld surface analysis is a widely used tool for identifying the types of intermolecular contacts that contribute most significantly to crystal packing stabilization. One useful metric for analyzing these contacts is the contact enrichment descriptor, which indicates the types of contacts that are over- or under-represented. In this statistical study, enrichment ratios were combined with electrostatic energy (Eelec) data for a variety of compound families. To compute the electrostatic interaction energy between atoms, charge density models from the ELMAM2 database of multipolar atoms were used. As expected, strong hydrogen bonds such as O/N-H...N and O/N-H...O typically display large enrichment values and have the most negative (i.e. favorable) electrostatic energies. Conversely, contacts that are repulsive from an electrostatic perspective are usually the most under-represented. Analyzing the enrichment ratio and electrostatic energy indicators was shown to help identify which favorable contacts are the most competitive with each other. For weaker interactions, such as hydrophobic contacts, the behavior is less clear cut and can depend on other factors such as the chemical content of the molecule. The anticorrelation between contact enrichment and Eelec is generally lost for weaker contacts. However, we observed that C...C contacts are often enriched in crystal structures containing heterocycles, despite the low electrostatic attraction. For molecules with only weak hydrogen bond donors/acceptors and hydrophobic groups, the correlation between contact enrichment and Eelec is still evident for the strongest of these interactions. However, there are some exceptions where the most favorable contacts from an electrostatic perspective are not the most over-represented. This can occur in cases where the shape of the molecule is complex or elongated, favoring dispersion forces and shape complementarity in the packing.
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Affiliation(s)
- Christian Jelsch
- CRM2, UMR CNRS 7036, Université de Lorraine, Nancy 54500, France
| | - Yvon Bibila Mayaya Bisseyou
- Laboratoire des Sciences de la Matière, de l’Environnement et de l’Energie Solaire, UFR SSMT, Université Félix Houphouët-Boigny, 22 BP 582 Abidjan 22, Cote d’Ivoire
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49
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Witkowski M, Trzybiński D, Pawlędzio S, Woźniak K, Dzwolak W, Królikowska A. The Structural Characterisation and DFT-Aided Interpretation of Vibrational Spectra for Cyclo(l-Cys-d-Cys) Cyclic Dipeptide in a Solid State. Molecules 2023; 28:5902. [PMID: 37570871 PMCID: PMC10421304 DOI: 10.3390/molecules28155902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/25/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
Cyclic dipeptides with two intramolecular peptide bonds forming a six-membered 2,5-diketopiperazine ring are gaining significant attention due to their biological and chemical properties. Small changes in the local geometry of such molecules (from cis to trans) can lead to significant structural differences. This work presents the results of a study of cyclo(l-Cys-d-Cys), a dipeptide comprising two cysteine molecules in opposite chiral configurations, with the functional groups situated at both sides of the diketopiperazine ring. X-ray diffraction (XRD) experiment revealed that the molecule crystallises in the P-1 space group, which includes the centre of inversion. The IR and Raman vibrational spectra of the molecule were acquired and interpreted in terms of the potential energy distribution (PED) according to the results of density functional theory (DFT) calculations. The DFT-assisted analysis of energy frameworks for the hydrogen bond network within molecular crystals was performed to support the interpretation of X-ray structural data. The optimisation of the computational model based on three-molecule geometry sections from the crystallographic structure, selected to appropriately reflect the intermolecular interactions responsible for the formation of 1D molecular tapes in cyclo(l-Cys-d-Cys) crystal, allowed for better correspondence between theoretical and experimental vibrational spectra. This work can be considered the first complete structural characterisation of cyclo(l-Cys-d-Cys), complemented via vibrational spectroscopy results with full band assignment aided with the use of the DFT method.
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Affiliation(s)
- Marcin Witkowski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland
| | - Damian Trzybiński
- Biological and Chemical Research Centre, Chemistry Department, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - Sylwia Pawlędzio
- Biological and Chemical Research Centre, Chemistry Department, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Krzysztof Woźniak
- Biological and Chemical Research Centre, Chemistry Department, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - Wojciech Dzwolak
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland
- Biological and Chemical Research Centre, Chemistry Department, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - Agata Królikowska
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland
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Easmin S, Pedireddi VR. Supramolecular assemblies in the molecular complexes of 4-cyanophenylboronic acid with different N-donor ligands. RSC Adv 2023; 13:23267-23284. [PMID: 37538513 PMCID: PMC10394587 DOI: 10.1039/d3ra03936f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 07/17/2023] [Indexed: 08/05/2023] Open
Abstract
Molecular complexes of 4-cyanophenylboronic acid (CB) with various N-donor compounds having different conformational features, for example, rigid (1,10-phenanthroline (110phen), 4,7-phenanthroline (47phen), 1,7-phenanthroline (17phen) and acridine (acr)) and linear (1,2-bis(4-pyridyl)ethane (bpyea), 1,2-bis(4-pyridyl)ethene (bpyee) and 4,4'-azopyridine (azopy)), have been reported. In all complexes, the -B(OH)2 moiety is found to be in a syn-anti confirmation, with the exception of structures containing 110phen, bpyee, and azopy, wherein, syn-syn conformation is observed. Further, CB molecules remain intact in all structures except in the complexes with some linear N-donor ligands, wherein -B(OH)2 transforms to monoester (-B(OH)(OCH3)) prior to the formation of corresponding molecular complexes. In such boronic monoester complexes, the conformation of -B(OH)(OCH3) is syn-anti with respect to the -OH and -OCH3 groups. Also, complexes mediated by azopy and bpyee exist in both hydrated and anhydrous forms. In these anhydrous structures, the recognition pattern is through homomeric (juxtaposed -CN and -B(OH)2) as well as heteromeric (between hetero N-atom and -B(OH)2) O-H⋯N hydrogen bonds, while only heteromeric O-H⋯N hydrogen bonds hold co-formers in all other structures. Depending upon the conformational features of both co-formers, molecules are packed in crystal lattices in the form of stacked layers, helical chains, and crossed ribbons. All structures are fully characterized by single-crystal X-ray diffraction and phase purity is established by powder X-ray diffraction. Additionally, correlation among structures is explained by calculating a similarity index and performing a Hirshfeld surface analysis to quantify the strength and effectiveness of different types of intermolecular bonds that stabilize these structures along with the presentation of energy frameworks, representing the strength of the interactions in the form gradient cylinders. Also, the morphology of each complex was computed by BFDH methodology to correlate with the actual crystal morphology and packing arrangement.
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Affiliation(s)
- Samina Easmin
- Solid State and Supramolecular Chemistry Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar Argul Bhubaneswar 752 050 India
| | - Venkateswara Rao Pedireddi
- Solid State and Supramolecular Chemistry Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar Argul Bhubaneswar 752 050 India
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