1
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Patra A, Das A, Sarkar A, Gómez-García CJ, Sinha C. Tetranuclear Ni II-Mannich base complex with oxygenase, water splitting and ferromagnetic and antiferromagnetic coupling properties. Dalton Trans 2024. [PMID: 39072528 DOI: 10.1039/d4dt01425a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
A new Mannich base (2-(4-(2-hydroxy-3-methoxy-5-methylbenzyl)-piperazin-1-yl)methyl)-6-methoxy-4-ethylphenol (H2L) and its tetranuclear NiII complex [Ni4L2(μ1,1-Cl)2(H2O)4]Cl2 (compound 1) are characterised using single-crystal X-ray diffraction measurements. Compound 1 contains four different NiII centres in a rhombus-like structure. Two Ni atoms (Ni1 and Ni2) have a NiN2O4 coordination sphere, while the other two (Ni3 and Ni4) have a NiO4Cl2 coordination environment and Ni-Cl-Ni bridges connect them. Ni1 and Ni2 are linked to Ni3 and Ni4 by phenoxide bridges. Variable temperature magnetic susceptibility measurements of 1 indicate the presence of alternating antiferromagnetic coupling (J1 = -6.6(1) cm-1) through the phenoxide bridge along the sides of the rhombus and ferromagnetic coupling (J2 = 8.4(1) cm-1) through the double Cl bridge along the short diagonal of the rhombus with a zero-field splitting of |D| = 2.7(1) cm-1. Compound 1 shows oxidase (catecholase-like and phenoxazinone synthase-like) activity. The oxidation of 3,5-di-tert-butylcatechol (3,5-DTBC) gives 3,5-di-tert-butylquinone (3,5-DTBQ) and H2O2 and the oxidation of o-aminophenol (OAP) produces 2-aminophenoxazin-3-one (APX) and H2O with turnover numbers of 28.32 and 17.52 h-1, respectively, under aerobic conditions. A mechanism for the oxidase activity catalysed by compound 1 is proposed in line with ESI-mass spectrometry, EPR spectroscopy, and electrochemical data. The reaction involves the cleavage of the tetranuclear Ni4-core to form a mononuclear NiII complex in the presence of the substrate (3,5-DTBC/OAP). This NiII complex is reduced to NiI with the concomitant oxidation of the substrate (3,5-DTBQ/APX). Formation of a radical intermediate is confirmed using EPR. In the catecholase-like activity, O2 is reduced to H2O2 while in the phenoxazinone synthase-like activity O2 produces H2O. Compound 1 participated in oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in a strongly basic medium with an onset potential of 418 mV and a Tafel slope of 121 mV dec-1 for OER and an onset potential of 477 mV and Tafel slope of 146 mV dec-1 for HER.
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Affiliation(s)
- Arka Patra
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - Avijit Das
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - Abhimanyu Sarkar
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - Carlos J Gómez-García
- Departmento de Química Inorgánica, Universidad de Valencia, C/Dr. Moliner 50, 46100 Burjasot, Valencia, Spain
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2
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Al Rahal O, Ferguson M, Lennox CB, Male L, Friščić T. Structure of the caffeine-pyrogallol complex: revisiting a pioneering structural analysis of a model pharmaceutical cocrystal. Chem Commun (Camb) 2024; 60:7431-7434. [PMID: 38938210 DOI: 10.1039/d4cc02289k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
The 1967 attempt of structural analysis of the solid-state complex of caffeine and pyrogallol was a pioneering structural investigation in the supramolecular chemistry of caffeine, of what today would easily be considered an archetype of a model pharmaceutical cocrystal. Re-investigating this historically important system demonstrates that this long overlooked complex is most likely a tetrahydrate with a different structure and composition than initially proposed, and provides the crystal structure of the anhydrous cocrystal.
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Affiliation(s)
- Okba Al Rahal
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, UK.
| | - Michael Ferguson
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, UK.
| | - Cameron B Lennox
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, UK.
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., H3A 0B8 Montreal, Canada
| | - Louise Male
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, UK.
| | - Tomislav Friščić
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, UK.
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., H3A 0B8 Montreal, Canada
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3
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Nizhnik YP, Hansen E, Howard C, Zeller M, Rosokha SV. Complexes of Zinc-Coordinated Heteroaromatic N-Oxides with Pyrene: Lewis Acid Effects on the Multicenter Donor-Acceptor Bonding. Molecules 2024; 29:3305. [PMID: 39064884 PMCID: PMC11279733 DOI: 10.3390/molecules29143305] [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: 06/28/2024] [Revised: 07/10/2024] [Accepted: 07/10/2024] [Indexed: 07/28/2024] Open
Abstract
4-Nitroquinoline-N-oxide (NQO) and 4-nitropyridine-N-oxide (NPO) are important precursors for the synthesis of substituted heterocycles while NQO is a popular model mutagen and carcinogen broadly used in cancer research; intermolecular interactions are critical for their reactions or functioning in vivo. Herein, the effects of the coordination of N-oxide's oxygen atom to Lewis acids on multicenter donor-acceptor bonding were explored via a combination of experimental and computational studies of the complexes of NQO and NPO with a typical π-electron donor, pyrene. Coordination with ZnCl2 increased the positive electrostatic potentials on the surfaces of these π-acceptors and lowered the energy of their LUMO. Analogous effects were observed upon the protonation of the N-oxides' oxygen or bonding with boron trifluoride. The interaction of ZnCl2, NPO, or NQO and pyrene resulted in the formation of dark co-crystals comprising π-stacked Zn-coordinated N-oxides and pyrene similar to that found with protonated or (reported earlier) BF3-bonded N-oxides. Computational studies indicated that the coordination of N-oxides to zinc(II), BF3, or protonation led to the strengthening of the multicenter bonding of the nitro-heterocycle with pyrene, and this effect was related both to the increased electrostatic attraction and molecular-orbital interactions in their complexes.
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Affiliation(s)
| | - Erin Hansen
- Department of Chemistry, Ball State University, Muncie, IN 47306, USA; (E.H.); (C.H.)
| | - Cayden Howard
- Department of Chemistry, Ball State University, Muncie, IN 47306, USA; (E.H.); (C.H.)
| | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA;
| | - Sergiy V. Rosokha
- Department of Chemistry, Ball State University, Muncie, IN 47306, USA; (E.H.); (C.H.)
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4
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Diniz LF, Carvalho PS, Souza MAC, Diniz R, Fernandes C. Highly Soluble Dacarbazine Multicomponent Crystals Less Prone to Photodegradation. Mol Pharm 2024; 21:3661-3673. [PMID: 38858241 PMCID: PMC11220790 DOI: 10.1021/acs.molpharmaceut.4c00393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 06/04/2024] [Accepted: 06/04/2024] [Indexed: 06/12/2024]
Abstract
Dacarbazine (DTIC) is a widely prescribed oncolytic agent to treat advanced malignant melanomas. Nevertheless, the drug is known for exhibiting low and pH-dependent solubility, in addition to being photosensitive. These features imply the formation of the inactive photodegradation product 2-azahypoxanthine (2-AZA) during pharmaceutical manufacturing and even drug administration. We have focused on developing novel DTIC salt/cocrystal forms with enhanced solubility and dissolution behaviors to overcome or minimize this undesirable biopharmaceutical profile. By cocrystallization techniques, two salts, two cocrystals, and one salt-cocrystal have been successfully prepared through reactions with aliphatic carboxylic acids. A detailed structural study of these new multicomponent crystals was conducted using X-ray diffraction (SCXRD, PXRD), spectroscopic (FT-IR and 1H NMR), and thermal (TG and DSC) analyses. Most DTIC crystal forms reported display substantial enhancements in solubility (up to 19-fold), with faster intrinsic dissolution rates (from 1.3 to 22-fold), contributing positively to reducing the photodegradation of DTIC in solution. These findings reinforce the potential of these new solid forms to enhance the limited DTIC biopharmaceutical profile.
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Affiliation(s)
- Luan F. Diniz
- Laboratório
de Controle de Qualidade de Medicamentos e Cosméticos, Departamento
de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, 31270-901 Belo
Horizonte, MG, Brazil
| | - Paulo S. Carvalho
- Instituto
de Física, Universidade Federal do
Mato Grosso do Sul, 79074-460 Campo Grande, MS, Brazil
| | - Mateus A. C. Souza
- Laboratório
de Controle de Qualidade de Medicamentos e Cosméticos, Departamento
de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, 31270-901 Belo
Horizonte, MG, Brazil
| | - Renata Diniz
- Departamento
de Química, Instituto de Ciências Exatas (ICEx), Universidade Federal de Minas Gerais, 31270-901 Belo
Horizonte, MG, Brazil
| | - Christian Fernandes
- Laboratório
de Controle de Qualidade de Medicamentos e Cosméticos, Departamento
de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, 31270-901 Belo
Horizonte, MG, Brazil
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5
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Gandhi VV, Pal MK, Singh BG, Das RP, Wadawale AP, Dey S, Kunwar A. Deuterium labeling improves the therapeutic index of 3,3'-diselenodipropionic acid as an anticancer agent: insights from redox reactions. RSC Med Chem 2024; 15:2165-2178. [PMID: 38911162 PMCID: PMC11187547 DOI: 10.1039/d4md00105b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 05/02/2024] [Indexed: 06/25/2024] Open
Abstract
3,3'-Diselenodipropionic acid (DSePA), a selenocystine derivative, has been previously reported as an oral supplement for anticancer/radio-modulation activities. The present study is focused on devising a strategy to synthesize and characterize the deuterated derivative of DSePA and on understanding the effect of deuteration on its therapeutic index by comparing its cytotoxicity in cancerous versus non-cancerous cell types. In this context, the synthesis of 3,3'-diselenodipropionic acid-D8 (D-DSePA) was accomplished in ∼42% yield. Further, the results clearly established that the deuteration of DSePA significantly reduced its cytotoxicity in non-cancerous cell types while retaining its cytotoxicity in cancerous cell lines. Together, D-DSePA displayed a ∼5-fold higher therapeutic index than the non-deuterated derivative for anticancer activity. The biochemical and NMR studies confirmed that the better biocompatibility of D-DSePA than its non-deuterated derivative in non-cancerous cells was due to its ability to undergo slower redox reactions and to cause lesser inhibition of intracellular redox enzymes.
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Affiliation(s)
- V V Gandhi
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre Mumbai - 400085 India 91 22 25505151 91 22 25592352/25595399
- Homi Bhabha National Institute Anushaktinagar Mumbai - 400 094 India
| | - M K Pal
- Chemistry Division, Bhabha Atomic Research Centre Mumbai - 400085 India 91 22 25592589
| | - B G Singh
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre Mumbai - 400085 India 91 22 25505151 91 22 25592352/25595399
- Homi Bhabha National Institute Anushaktinagar Mumbai - 400 094 India
| | - R P Das
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre Mumbai - 400085 India 91 22 25505151 91 22 25592352/25595399
| | - A P Wadawale
- Chemistry Division, Bhabha Atomic Research Centre Mumbai - 400085 India 91 22 25592589
| | - S Dey
- Chemistry Division, Bhabha Atomic Research Centre Mumbai - 400085 India 91 22 25592589
- Homi Bhabha National Institute Anushaktinagar Mumbai - 400 094 India
| | - A Kunwar
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre Mumbai - 400085 India 91 22 25505151 91 22 25592352/25595399
- Homi Bhabha National Institute Anushaktinagar Mumbai - 400 094 India
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6
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Samadder P, Naim K, Sahoo SC, Neelakandan PP. Surface coating induced room-temperature phosphorescence in flexible organic single crystals. Chem Sci 2024; 15:9258-9265. [PMID: 38903241 PMCID: PMC11186325 DOI: 10.1039/d4sc01708k] [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: 03/13/2024] [Accepted: 05/16/2024] [Indexed: 06/22/2024] Open
Abstract
Materials exhibiting room temperature phosphorescence (RTP) are in high demand for signage, information encryption, sensing, and biological imaging. Due to weak spin-orbit coupling and other non-radiative processes that effectively quench the triplet excited states, RTP is sparsely observed in organic materials. Although the incorporation of a heavy atom through covalent or non-covalent modification circumvents these drawbacks, heavy-atom-containing materials are undesirable because of their deleterious side effects. Here, we designed and synthesized a new naphthalidenimine-boron complex as a coating material for the single crystals of 4,4'-dimethoxybenzophenone. The coated surface was observed to exhibit yellowish-green phosphorescence with ms lifetimes at ambient conditions through Förster resonance energy transfer (FRET). Importantly, the mechanical flexibility of the single crystals was observed to be retained after coating. The fluorescence-phosphorescence dual emission was utilised for colour-tunable optical waveguiding and anti-counterfeiting applications. As organic single crystals that can sustain mechanical deformations are emerging as the next-generation materials for electronic device fabrication, the flexible RTP organic crystals showing colour-tuneable optical waveguiding could be omnipotent in electronics.
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Affiliation(s)
- Prodipta Samadder
- Institute of Nano Science and Technology (INST) Knowledge City, Sector 81 Mohali 140306 India
| | - Khalid Naim
- Institute of Nano Science and Technology (INST) Knowledge City, Sector 81 Mohali 140306 India
| | | | - Prakash P Neelakandan
- Institute of Nano Science and Technology (INST) Knowledge City, Sector 81 Mohali 140306 India
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7
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Baus Topić N, Dash SG, Topić E, Arhangelskis M, Cinčić D. Perhalogenated Anilines as Bifunctional Donors of Hydrogen and Halogen Bonds in Cocrystals with Ditopic Nitrogen-Containing Acceptors. CRYSTAL GROWTH & DESIGN 2024; 24:5078-5088. [PMID: 38911136 PMCID: PMC11191752 DOI: 10.1021/acs.cgd.4c00315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/24/2024] [Accepted: 05/24/2024] [Indexed: 06/25/2024]
Abstract
In this study, we examine the experimental and theoretical capabilities of two perhalogenated anilines, 2,3,5,6-tetrafluoro-4-bromoaniline (btfa) and 2,3,5,6-tetrafluoro-4-iodoaniline (itfa) as hydrogen and halogen bond donors. A series of 11 cocrystals derived from the two anilines and selected ditopic nitrogen-containing acceptors (4,4'-bipyridine, 1,2-bis(4-pyridyl)ethane, and 1,4-diazabicyclo[2.2.2]octane) in 1:1 and 2:1 stoichiometries were prepared by liquid-assisted grinding and crystallization from solution. Crystallographic analysis revealed bifunctional donor properties in both anilines. The dominant supramolecular interaction in four cocrystals of btfa is the N-H···Nacceptor hydrogen bond between btfa and acceptor molecules, while in the one remaining cocrystal, donor and acceptor molecules are connected via the N-H···Nacceptor hydrogen bond and the Br···Nacceptor halogen bond. In two cocrystals of itfa, the dominant supramolecular interaction is the I···Nacceptor halogen bond between itfa and acceptor molecules, while in the remaining four cocrystals, donor and acceptor molecules are additionally connected by the N-H···Nacceptor hydrogen bond. Periodic density-functional theory (DFT) calculations have been conducted to assess the formation energies of these cocrystals and the strengths of the established halogen and hydrogen bonds. Molecular DFT calculations on btfa and itfa indicate that the differences in electrostatic potential between the competing sites on the molecules are 261.6 and 157.0 kJ mol-1 e-1, respectively. The findings suggest that itfa, with a smaller electrostatic potential difference between donor sites, is more predisposed to act as a bifunctional donor.
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Affiliation(s)
- Nea Baus Topić
- Department
of Chemistry, Faculty of Science, University
of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
| | - Sibananda G. Dash
- Faculty
of Chemistry, University of Warsaw, 1 Pasteura Street, Warsaw 02-093, Poland
| | - Edi Topić
- Department
of Chemistry, Faculty of Science, University
of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
| | - Mihails Arhangelskis
- Faculty
of Chemistry, University of Warsaw, 1 Pasteura Street, Warsaw 02-093, Poland
| | - Dominik Cinčić
- Department
of Chemistry, Faculty of Science, University
of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
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8
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Usuba J, Sun Z, Nguyen HPQ, Raju C, Schmidt-Rohr K, Han GGD. Mechanoactivated amorphization and photopolymerization of styryldipyryliums. COMMUNICATIONS MATERIALS 2024; 5:98. [PMID: 38859933 PMCID: PMC11162349 DOI: 10.1038/s43246-024-00539-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 06/02/2024] [Indexed: 06/12/2024]
Abstract
Conventional topochemical photopolymerization reactions occur exclusively in precisely-engineered photoactive crystalline states, which often produces high-insoluble polymers. To mitigate this, here, we report the mechanoactivation of photostable styryldipyrylium-based monomers, which results in their amorphization-enabled solid-state photopolymerization and produces soluble and processable amorphous polymers. A combination of solid-state nuclear magnetic resonance, X-ray diffraction, and absorption/fluorescence spectroscopy reveals the crucial role of a mechanically-disordered monomer phase in yielding polymers via photo-induced [2 + 2] cycloaddition reaction. Hence, mechanoactivation and amorphization can expand the scope of topochemical polymerization conditions to open up opportunities for generating polymers that are otherwise difficult to synthesize and analyze.
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Affiliation(s)
- Junichi Usuba
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
| | - Zhenhuan Sun
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
| | - Han P. Q. Nguyen
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
| | - Cijil Raju
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
| | - Klaus Schmidt-Rohr
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
| | - Grace G. D. Han
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
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9
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Shukla R, Sen A. Hydrogen- and halogen-bonding-directed trimeric supramolecular motifs in dihalogenated 1,2,4-triazoles. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2024; 80:163-170. [PMID: 38682692 DOI: 10.1107/s2052520624002427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 03/13/2024] [Indexed: 05/01/2024]
Abstract
Hydrogen-bonding and halogen-bonding interactions are important noncovalent interactions that play a significant role in the crystal structure of organic molecules. An in-depth analysis is given of the crystal packing of two previously reported crystal structures of dihalogenated 1,2,4-triazole derivatives, namely 3,5-dichloro-1H-1,2,4-triazole and 3,5-dibromo-1H-1,2,4-triazole. This work provides insights into the complex interplay of hydrogen-bonding and halogen-bonding interactions resulting in the formation of multiple trimeric motifs in the crystal structure of 1,2,4-triazole derivatives. Analysis of the crystal packing of these isostructural crystal structures revealed that the molecular arrangement in these molecules is primarily stabilized by the formation of different trimeric motifs stabilized by N-H...N hydrogen bonds, N-H...X (X = Cl/Br) halogen bonds and C-X...X halogen-bonding interactions. Computational studies further revealed that all these trimers are energetically stable. A crystallographic database search further reveals that while the cyclic trimers reported in this study are present in other molecules, structures analyzed in this study are the sole instances where all are present simultaneously.
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Affiliation(s)
- Rahul Shukla
- Department of Chemistry (NCI Laboratory), School of Science, GITAM (Deemed to be University), Rushikonda, Visakhapatnam, Andhra Pradesh 530045, India
| | - Anik Sen
- Department of Chemistry (CMDD Laboratory), School of Science, GITAM (Deemed to be University), Visakhapatnam, Andhra Pradesh 530045, India
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10
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Bučar DK. Designer porous solids open up vast sandbox for materials research. Nature 2024; 630:40-41. [PMID: 38778187 DOI: 10.1038/d41586-024-01358-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
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11
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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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12
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Fredrickson RT, Fredrickson DC. Interface Nuclei in the Y-Ag-Zn System: Three Chemical Pressure-Templated Phases with Lamellar Mg 2Zn 11- and CaPd 5+x-Type Domains. Inorg Chem 2024; 63:9252-9264. [PMID: 38709207 DOI: 10.1021/acs.inorgchem.4c00966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
The interface nucleus approach was recently presented as a framework for understanding and predicting the emergence of modular intermetallic phases, i.e., complex structures derived from the assembly of units from simpler parent structures. Here, we present the synthesis and crystal structures of three new modular intermetallics in the Y-Ag-Zn system that support this strategy: YAg2.79Zn2.80 (I), YAg2.44Zn3.17 (II), and YAg2.71Zn2.71 (III). Each of these structures is derived from an intergrowth of slabs of the Mg2Zn11 and CaPd5+x types, with the chief differences being in the thickness and degree of disorder within the CaPd5+x-type domains. The merging of the parent structure domains is facilitated by their sharing a common geometrical unit, a double hexagonal antiprism. The use of this motif as an interface nucleus mirrors its role in another family of structures: an intergrowth series combining the CaCu5 and Laves phase structure types, as in the PuNi3-type phase YNi3. However, there is a key difference between the two series. While in the CaCu5/Laves intergrowths, the interface between the parent structures arises perpendicular to the interface nucleus's unique (hexagonal) axis, in the Mg2Zn11/CaPd5+x-type intergrowths revealed here, the interfaces run parallel to this axis. Using CP analysis of the Mg2Zn11/CaPd5+x-type parent structures, we trace this behavior to the different directions of high-CP compatibility of the interface nuclei in the Mg2Zn11/CaPd5+x and CaCu5/Laves structure type pairs. In this way, the Y(Ag/Zn)5+x phases highlight the role that interface nuclei play in directing the domain morphologies of modular intermetallic phases.
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Affiliation(s)
- Rie T Fredrickson
- Department of Chemistry, University of Wisconsin─Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Daniel C Fredrickson
- Department of Chemistry, University of Wisconsin─Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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13
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Sun Y, Morton ER, Bhabha H, Clark ER, Bučar DK, Barros-Metlova V, Gould JA, Aliev AE, Haynes CJE. Competitive Intramolecular Hydrogen Bonding: Offering Molecules a Choice. Chempluschem 2024:e202400055. [PMID: 38713896 DOI: 10.1002/cplu.202400055] [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: 01/22/2024] [Revised: 04/30/2024] [Accepted: 05/02/2024] [Indexed: 05/09/2024]
Abstract
The conformational preferences of N-((6-methylpyridin-2-yl)carbamothioyl)benzamide were studied in solution, the gas phase and the solid state via a combination of NMR, density functional theory (DFT) and single crystal X-ray techniques. This acyl thiourea derivative can adopt two classes of low energy conformation, each stabilized by a different 6-membered intramolecular hydrogen bond (IHB) pseudoring. Analysis in different solvents revealed that the conformational preference of this molecule is polarity dependent, with increasingly polar environments yielding a higher proportion of the minor conformer containing an NH⋅⋅⋅N IHB. The calculated barrier to interconversion is consistent with dynamic behaviour at room temperature, despite the propensity of 6-membered IHB pseudorings to be static. This work demonstrates that introducing competitive IHB pathways can render static IHBs more dynamic and that such systems could have potential as chameleons in drug design.
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Affiliation(s)
- Yu Sun
- Chemistry Department, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Evelyn R Morton
- Chemistry Department, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Hunaida Bhabha
- Chemistry Department, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Ewan R Clark
- School of Chemistry and Forensics, University of Kent, Canterbury, CT2 7NH, UK
| | - Dejan-Krešimir Bučar
- Chemistry Department, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | | | - Jamie A Gould
- Chemistry Department, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Abil E Aliev
- Chemistry Department, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Cally J E Haynes
- Chemistry Department, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
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14
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Deshmukh AP, Zheng W, Chuang C, Bailey AD, Williams JA, Sletten EM, Egelman EH, Caram JR. Near-atomic-resolution structure of J-aggregated helical light-harvesting nanotubes. Nat Chem 2024; 16:800-808. [PMID: 38316987 PMCID: PMC11088501 DOI: 10.1038/s41557-023-01432-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 12/18/2023] [Indexed: 02/07/2024]
Abstract
Cryo-electron microscopy has delivered a resolution revolution for biological self-assemblies, yet only a handful of structures have been solved for synthetic supramolecular materials. Particularly for chromophore supramolecular aggregates, high-resolution structures are necessary for understanding and modulating the long-range excitonic coupling. Here, we present a 3.3 Å structure of prototypical biomimetic light-harvesting nanotubes derived from an amphiphilic cyanine dye (C8S3-Cl). Helical 3D reconstruction directly visualizes the chromophore packing that controls the excitonic properties. Our structure clearly shows a brick layer arrangement, revising the previously hypothesized herringbone arrangement. Furthermore, we identify a new non-biological supramolecular motif-interlocking sulfonates-that may be responsible for the slip-stacked packing and J-aggregate nature of the light-harvesting nanotubes. This work shows how independently obtained native-state structures complement photophysical measurements and will enable accurate understanding of (excitonic) structure-function properties, informing materials design for light-harvesting chromophore aggregates.
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Affiliation(s)
- Arundhati P Deshmukh
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA
| | - Weili Zheng
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA, USA
| | - Chern Chuang
- Chemical Physics Theory Group, Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
- Department of Chemistry and Biochemistry, University of Nevada, Las Vegas, Las Vegas, NV, USA
| | - Austin D Bailey
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA
| | - Jillian A Williams
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA
| | - Ellen M Sletten
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA
| | - Edward H Egelman
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA, USA
| | - Justin R Caram
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.
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15
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Preston J, Parisi E, Murray B, Tyler AI, Simone E. Elucidating the Polymorphism of Xanthone: A Crystallization and Characterization Study. CRYSTAL GROWTH & DESIGN 2024; 24:3256-3268. [PMID: 38659660 PMCID: PMC11036362 DOI: 10.1021/acs.cgd.3c01506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/09/2024] [Accepted: 02/09/2024] [Indexed: 04/26/2024]
Abstract
The aim of this work is to shed light on the polymorphism of xanthones, a class of oxygenated molecules well known for their bioactivity, including antioxidant, anticancer, and anti-inflammatory effects. Understanding the polymorphism of xanthones can enable the design of novel solid products for pharmaceutical, nutraceutical, and agrochemical applications. Prior to this work, two entries accounting for different space groups were deposited for 9-xanthone in the Cambridge Structure Database (CSD): an orthorhombic P212121 and a monoclinic P21 structure solved at room and low temperatures, respectively. However, the very high similarity between these two structures and the lack of clear differences in their physical properties (e.g., thermal behavior) suggested the possibility of the existence of only one crystal structure. In fact, the differences shown in the literature data might be related to the chosen operating parameters, as well as the instrumental resolution of the single-crystal X-ray diffraction experiments. In the work presented here, the ambiguity in the polymorphism of xanthone is investigated using thermal analysis, powder and synchrotron single-crystal XRD, and optical microscopy. Additionally, a workflow for the correct identification of twinned crystal structures, which can be applied to other polymorphic systems, is presented. Such workflow combines the collection of a large data set of high-resolution diffraction patterns using synchrotron radiation with the use of principal component analysis, a dimensionality reduction technique, for a quick and effective identification of phase transitions happening during the data collection. Crystallization experiments were designed to promote the formation of different crystal structures of xanthone that were recrystallized based on past literature and beyond.
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Affiliation(s)
- Janine
Andrea Preston
- School
of Chemical and Process Engineering, University
of Leeds, Leeds LS2 9JT, United
Kingdom
| | - Emmanuele Parisi
- Department
of Applied Science and Technology (DISAT), Politecnico di Torino, 10129 Torino, Italy
| | - Brent Murray
- Food
Colloids and Bioprocessing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Arwen
I. I. Tyler
- Food
Colloids and Bioprocessing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Elena Simone
- Department
of Applied Science and Technology (DISAT), Politecnico di Torino, 10129 Torino, Italy
- Food
Colloids and Bioprocessing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, United Kingdom
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16
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Shen H, Pan L, Ning K, Fang Y, Muhitdinov B, Liu E, Huang Y. Asiatic acid cyclodextrin inclusion micro-cocrystal for insoluble drug delivery and acute lung injury therapy enhancement. J Nanobiotechnology 2024; 22:119. [PMID: 38494523 PMCID: PMC10946140 DOI: 10.1186/s12951-024-02387-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 03/07/2024] [Indexed: 03/19/2024] Open
Abstract
BACKGROUND Acute lung injury (ALI) is a fatal respiratory disease caused by overreactive immune reactions (e.g., SARS-CoV-2 infection), with a high mortality rate. Its treatment is often compromised by inefficient drug delivery barriers and insufficient potency of the currently used drugs. Therefore, developing a highly effective lung-targeted drug delivery strategy is a pressing clinical need. RESULTS In this study, the micro-sized inclusion cocrystal of asiatic acid/γ-cyclodextrin (AA/γCD, with a stoichiometry molar ratio of 2:3 and a mean size of 1.8 μm) was prepared for ALI treatment. The dissolution behavior of the AA/γCD inclusion cocrystals followed a "spring-and-hover" model, which meaned that AA/γCD could dissolve from the cocrystal in an inclusion complex form, thereby promoting a significantly improved water solubility (nine times higher than free AA). This made the cyclodextrin-based inclusion cocrystals an effective solid form for enhanced drug absorption and delivery efficiency. The biodistribution experiments demonstrated AA/γCD accumulated predominantly in the lung (Cmax = 50 µg/g) after systemic administration due to the micron size-mediated passive targeting effect. The AA/γCD group showed an enhanced anti-inflammatory therapeutic effect, as evidenced by reduced levels of pro-inflammatory cytokines in the lung and bronchoalveolar lavage fluids (BALF). Histological examination confirmed that AA/γCD effectively inhibited inflammation reactions. CONCLUSION The micro-sized inclusion cocrystals AA/γCD were successfully delivered into the lungs by pulmonary administration and had a significant therapeutic effect on ALI.
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Affiliation(s)
- Huan Shen
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, 528400, China
- State Key Laboratory of Drug Research, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Li Pan
- School of Pharmacy, Zunyi Medical University, Zunyi, 563003, China
| | - Keke Ning
- School of Pharmacy, Zunyi Medical University, Zunyi, 563003, China
| | - Yuefei Fang
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, 528400, China
| | - Bahtiyor Muhitdinov
- Institute of Bioorganic Chemistry, Uzbekistan Academy of Sciences, 83 M. Ulughbek Street, Tashkent, 100125, Uzbekistan
| | - Ergang Liu
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, 528400, China.
| | - Yongzhuo Huang
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, 528400, China.
- State Key Laboratory of Drug Research, Chinese Academy of Sciences, Shanghai, 201203, China.
- School of Pharmacy, Zunyi Medical University, Zunyi, 563003, China.
- NMPA Key Laboratory for Quality Research and Evaluation of Pharmaceutical Excipients, Shanghai, 201203, China.
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17
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Rahman M, Dannatt HRW, Blundell CD, Hughes LP, Blade H, Carson J, Tatman BP, Johnston ST, Brown SP. Polymorph Identification for Flexible Molecules: Linear Regression Analysis of Experimental and Calculated Solution- and Solid-State NMR Data. J Phys Chem A 2024; 128:1793-1816. [PMID: 38427685 PMCID: PMC10945485 DOI: 10.1021/acs.jpca.3c07732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 03/03/2024]
Abstract
The Δδ regression approach of Blade et al. [ J. Phys. Chem. A 2020, 124(43), 8959-8977] for accurately discriminating between solid forms using a combination of experimental solution- and solid-state NMR data with density functional theory (DFT) calculation is here extended to molecules with multiple conformational degrees of freedom, using furosemide polymorphs as an exemplar. As before, the differences in measured 1H and 13C chemical shifts between solution-state NMR and solid-state magic-angle spinning (MAS) NMR (Δδexperimental) are compared to those determined by gauge-including projector augmented wave (GIPAW) calculations (Δδcalculated) by regression analysis and a t-test, allowing the correct furosemide polymorph to be precisely identified. Monte Carlo random sampling is used to calculate solution-state NMR chemical shifts, reducing computation times by avoiding the need to systematically sample the multidimensional conformational landscape that furosemide occupies in solution. The solvent conditions should be chosen to match the molecule's charge state between the solution and solid states. The Δδ regression approach indicates whether or not correlations between Δδexperimental and Δδcalculated are statistically significant; the approach is differently sensitive to the popular root mean squared error (RMSE) method, being shown to exhibit a much greater dynamic range. An alternative method for estimating solution-state NMR chemical shifts by approximating the measured solution-state dynamic 3D behavior with an ensemble of 54 furosemide crystal structures (polymorphs and cocrystals) from the Cambridge Structural Database (CSD) was also successful in this case, suggesting new avenues for this method that may overcome its current dependency on the prior determination of solution dynamic 3D structures.
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Affiliation(s)
- Mohammed Rahman
- Department
of Physics, University of Warwick, Coventry CV4 7AL, U.K.
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K.
| | | | | | - Leslie P. Hughes
- Oral
Product Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, U.K.
| | - Helen Blade
- Oral
Product Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, U.K.
| | - Jake Carson
- Mathematics
Institute at Warwick, University of Warwick, Coventry CV4 7AL, U.K.
| | - Ben P. Tatman
- Department
of Physics, University of Warwick, Coventry CV4 7AL, U.K.
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K.
| | | | - Steven P. Brown
- Department
of Physics, University of Warwick, Coventry CV4 7AL, U.K.
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18
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Dong X, Huang H, Huang L, Zhou Y, Zhang B, Zeng H, Lin Z, Zou G. Unearthing Superior Inorganic UV Second-Order Nonlinear Optical Materials: A Mineral-Inspired Method Integrating First-Principles High-Throughput Screening and Crystal Engineering. Angew Chem Int Ed Engl 2024; 63:e202318976. [PMID: 38258950 DOI: 10.1002/anie.202318976] [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: 12/09/2023] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 01/24/2024]
Abstract
Natural minerals, with their adaptable framework structures exemplified by perovskite and lyonsite, have sparked substantial interest as potential templates for the design of advanced functional solid-state materials. Nonetheless, the quest for new materials with desired properties remains a substantial challenge, primarily due to the scarcity of effective and practical synthetic approaches. In this study, we have harnessed a synergistic approach that seamlessly integrates first-principles high-throughput screening and crystal engineering to reinvigorate the often-overlooked fresnoite mineral, Ba2 TiOSi2 O7 . This innovative strategy has culminated in the successful synthesis of two superior inorganic UV nonlinear optical materials, namely Rb2 TeOP2 O7 and Rb2 SbFP2 O7 . Notably, Rb2 SbFP2 O7 demonstrates a comprehensive enhancement in nonlinear optical performance, featuring a shortened UV absorption edge (260 nm) and a more robust second-harmonic generation response (5.1×KDP). Particularly striking is its significantly increased birefringence (0.15@546 nm), which is approximately 30 times higher than the prototype Ba2 TiOSi2 O7 (0.005@546 nm). Our research has not only revitalized the potential of the fresnoite mineral for the development of new high-performance UV nonlinear optical materials but has also provided a clearly defined roadmap for the efficient exploration of novel structure-driven functional materials with targeted properties.
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Affiliation(s)
- Xuehua Dong
- College of Chemistry, Sichuan University, Chengdu, 610065, P. R. China
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, P. R. China
| | - Hongbo Huang
- College of Chemistry and Materials Science, Institute of Life Science and Green Development, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei University, Baoding, 071002, P. R. China
| | - Ling Huang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, P. R. China
| | - Yuqiao Zhou
- College of Chemistry, Sichuan University, Chengdu, 610065, P. R. China
| | - Bingbing Zhang
- College of Chemistry and Materials Science, Institute of Life Science and Green Development, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei University, Baoding, 071002, P. R. China
| | - Hongmei Zeng
- College of Chemistry, Sichuan University, Chengdu, 610065, P. R. China
| | - Zhien Lin
- College of Chemistry, Sichuan University, Chengdu, 610065, P. R. China
| | - Guohong Zou
- College of Chemistry, Sichuan University, Chengdu, 610065, P. R. China
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19
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Takiguchi Y, Nakane D, Akitsu T. The prediction of single-molecule magnet properties via deep learning. IUCRJ 2024; 11:182-189. [PMID: 38299376 PMCID: PMC10916298 DOI: 10.1107/s2052252524000770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/22/2024] [Indexed: 02/02/2024]
Abstract
This paper uses deep learning to present a proof-of-concept for data-driven chemistry in single-molecule magnets (SMMs). Previous discussions within SMM research have proposed links between molecular structures (crystal structures) and single-molecule magnetic properties; however, these have only interpreted the results. Therefore, this study introduces a data-driven approach to predict the properties of SMM structures using deep learning. The deep-learning model learns the structural features of the SMM molecules by extracting the single-molecule magnetic properties from the 3D coordinates presented in this paper. The model accurately determined whether a molecule was a single-molecule magnet, with an accuracy rate of approximately 70% in predicting the SMM properties. The deep-learning model found SMMs from 20 000 metal complexes extracted from the Cambridge Structural Database. Using deep-learning models for predicting SMM properties and guiding the design of novel molecules is promising.
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Affiliation(s)
- Yuji Takiguchi
- Department of Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 1628601, Japan
| | - Daisuke Nakane
- Department of Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 1628601, Japan
| | - Takashiro Akitsu
- Department of Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 1628601, Japan
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20
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Qiu ZF, Wang P, Zhang XY, Chen JQ, Zhang KY, Lu XY, Zhao Y, Sun WY. Supramolecular assemblies of Cu(II) with a tetraphenylethene-imidazole ligand for tuning photocatalytic CO 2 reduction. Chem Commun (Camb) 2024; 60:2204-2207. [PMID: 38304957 DOI: 10.1039/d3cc05514k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Cu(II) supramolecular assemblies [Cu2(tipe)2(H2O)2](NO3)4·2.5H2O (CuN4) and [Cu2Cl4(tipe)(CH3CN)]·H2O (CuN2Cl2) (tipe = 1,1,2,2-tetrakis(4-(imidazole-1-yl)phenyl)ethene) were synthesized and utilized for photocatalytic CO2 reduction. CuN4 exhibits CO production of up to 891 μmol gcat-1 with a selectivity of 79.9%, while CuN2Cl2 gives low CO production of 206 μmol gcat-1 but with a high selectivity of >99.9% in 5 h. The experimental and DFT calculation results indicate that the coordination environment and non-covalent interactions within the assemblies have a great impact on the photocatalytic CO2 reduction behavior. This work provides useful insights on Cu(II) assembly catalyzed CO2 photoreduction.
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Affiliation(s)
- Zhao-Feng Qiu
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Peng Wang
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Xiao-Yu Zhang
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Jia-Qi Chen
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Kai-Yang Zhang
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Xiang-Yu Lu
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Yue Zhao
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Wei-Yin Sun
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
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21
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Le Garff P, Maria Losus R, Chaudhary S, Dobrzańska L. Tailoring the dimensionality of metal complexes via ligand modifications. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2024; 80:19-26. [PMID: 38205838 DOI: 10.1107/s2052520623010260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 11/28/2023] [Indexed: 01/12/2024]
Abstract
A series of CuII complexes obtained under the same reaction conditions has been analyzed to gain insight into the effect of the ligand composition on the final reaction product. Dipodal ligands containing N-donor imidazole rings and a benzene ring as a spacer with different numbers of methyl substituents on the aromatic rings were selected for the study such as 1,3-bis(imidazol-1-ylmethyl)benzene (L1), 1,3-bis(imidazol-1-ylmethyl)-5-methylbenzene (L2), 1,3-bis(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene (L3), 1,3-bis(2-methylimidazol-1-ylmethyl)-2,4,6-trimethylbenzene (L4). L4 has not been reported previously and was synthesized for this study. The formed metal complexes show the presence of polymeric (ligand with no or one methyl substituent; 1-4), or discrete motifs (3- or 5-methyl substituents; 5-7). The new metal complexes 3, 5 and 6 were analyzed using single-crystal X-ray diffraction and powder diffraction. In addition, the structural analyses were supported by computational methods.
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Affiliation(s)
- Paul Le Garff
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, Toruń, 87-100, Poland
| | - Renny Maria Losus
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, Toruń, 87-100, Poland
| | - Simran Chaudhary
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, Toruń, 87-100, Poland
| | - Liliana Dobrzańska
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, Toruń, 87-100, Poland
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22
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Sun J, Wang X, Wang Q, Peng L, Liu Y, Wei D. Ultra-fast supercritically solvothermal polymerization for large single-crystalline covalent organic frameworks. Nat Protoc 2024; 19:340-373. [PMID: 38001366 DOI: 10.1038/s41596-023-00915-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 09/11/2023] [Indexed: 11/26/2023]
Abstract
Crystalline polymer materials, e.g., hyper-crosslinked polystyrene, conjugate microporous polymers and covalent organic frameworks, are used as catalyst carriers, organic electronic devices and molecular sieves. Their properties and applications are highly dependent on their crystallinity. An efficient polymerization strategy for the rapid preparation of highly or single-crystalline materials is beneficial not only to structure-property studies but also to practical applications. However, polymerization usually leads to the formation of amorphous or poorly crystalline products with small grain sizes. It has been a challenging task to efficiently and precisely assemble organic molecules into a single crystal through polymerization. To address this issue, we developed a supercritically solvothermal method that uses supercritical carbon dioxide (sc-CO2) as the reaction medium for polymerization. Sc-CO2 accelerates crystal growth due to its high diffusivity and low viscosity compared with traditional organic solvents. Six covalent organic frameworks with different topologies, linkages and crystal structures are synthesized by this method. The as-synthesized products feature polarized photoluminescence and second-harmonic generation, indicating their high-quality single-crystal nature. This method holds advantages such as rapid growth rate, high productivity, easy accessibility, industrial compatibility and environmental friendliness. In this protocol, we provide a step-by-step procedure including preparation of monomer dispersion, polymerization in sc-CO2, purification and characterization of the single crystals. By following this protocol, it takes 1-5 min to grow sub-mm-sized single crystals by polymerization. The procedure takes ~4 h from preparation of monomer dispersion and polymerization in sc-CO2 to purification and drying of the product.
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Affiliation(s)
- Jiang Sun
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, China
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, China
| | - Xuejun Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, China
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, China
| | - Qiankun Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, China
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, China
| | - Lan Peng
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, China
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, China
| | - Yunqi Liu
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, China
| | - Dacheng Wei
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, China.
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, China.
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23
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Hoja J, List A, Boese AD. Multimer Embedding Approach for Molecular Crystals up to Harmonic Vibrational Properties. J Chem Theory Comput 2024; 20:357-367. [PMID: 38109226 PMCID: PMC10782452 DOI: 10.1021/acs.jctc.3c01082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 12/20/2023]
Abstract
Accurate calculations of molecular crystals are crucial for drug design and crystal engineering. However, periodic high-level density functional calculations using hybrid functionals are often prohibitively expensive for the relevant systems. These expensive periodic calculations can be circumvented by the usage of embedding methods in which, for instance, the periodic calculation is only performed at a lower-cost level and then monomer energies and dimer interactions are replaced by those of the higher-level method. Herein, we extend such a multimer embedding approach to enable energy corrections for trimer interactions and the calculation of harmonic vibrational properties up to the dimer level. We evaluate this approach for the X23 benchmark set of molecular crystals by approximating a periodic hybrid density functional (PBE0+MBD) by embedding multimers into less expensive calculations using a generalized-gradient approximation functional (PBE+MBD). We show that trimer interactions are crucial for accurately approximating lattice energies within 1 kJ/mol and might also be needed for further improvement of lattice constants and hence cell volumes. Finally, the vibrational properties are already very well captured at the monomer and dimer level, making it possible to approximate vibrational free energies at room temperature within 1 kJ/mol.
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Affiliation(s)
- Johannes Hoja
- Department of Chemistry, University
of Graz, Heinrichstraße 28/IV, Graz 8010, Austria
| | - Alexander List
- Department of Chemistry, University
of Graz, Heinrichstraße 28/IV, Graz 8010, Austria
| | - A. Daniel Boese
- Department of Chemistry, University
of Graz, Heinrichstraße 28/IV, Graz 8010, Austria
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24
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Guo H, Liu S, Sun CC. Modulating Pharmaceutical Properties of Berberine Chloride through Cocrystallization with Benzendiol Isomers. Pharm Res 2023; 40:2791-2800. [PMID: 37226026 DOI: 10.1007/s11095-023-03533-w] [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: 03/28/2023] [Accepted: 05/10/2023] [Indexed: 05/26/2023]
Abstract
PURPOSE To synthesize and characterize new cocrystals of berberine chloride (BCl) for potential pharmaceutical tablet formulation. METHODS Solutions of BCl with each of three selected cocrystal formers, catechol (CAT), resorcinol (RES), and hydroquinone (HYQ) were slowly evaporated at room temperature to obtain crystals. Crystal structures were solved using single crystal X-ray diffraction. Bulk powders were characterized by powder X-ray diffraction, thermogravimetric-differential scanning calorimetry, FTIR, dynamic moisture sorption, and dissolution (both intrinsic and powder). RESULTS Single crystal structures confirmed the formation of cocrystals with all three coformers, which revealed various intermolecular interactions that stabilized crystal lattices, including O-H···Cl- hydrogen bonds. All three cocrystals exhibited better stability against high humidity (up to 95% relative humidity) at 25 ℃ and higher intrinsic and powder dissolution rates than BCl. CONCLUSION The enhanced pharmaceutical properties of all three cocrystals, as compared to BCl, further contribute to the existing evidence that confirms the beneficial role of cocrystallization in facilitating drug development. These new cocrystals expand the structure landscape of BCl solid forms, which is important for future analysis to establish a reliable relationship between crystal structure and pharmaceutical properties.
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Affiliation(s)
- Hongjie Guo
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Shuyu Liu
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China.
| | - Changquan Calvin Sun
- Pharmaceutical Materials Science and Engineering Laboratory, Department of Pharmaceutics, University of Minnesota, Minneapolis, MN, 55455, USA.
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25
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Vainauskas J, Borchers TH, Arhangelskis M, McCormick McPherson LJ, Spilfogel TS, Hamzehpoor E, Topić F, Coles SJ, Perepichka DF, Barrett CJ, Friščić T. Halogen bonding with carbon: directional assembly of non-derivatised aromatic carbon systems into robust supramolecular ladder architectures. Chem Sci 2023; 14:13031-13041. [PMID: 38023516 PMCID: PMC10664517 DOI: 10.1039/d3sc04191c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 10/09/2023] [Indexed: 12/01/2023] Open
Abstract
Carbon, although the central element in organic chemistry, has been traditionally neglected as a target for directional supramolecular interactions. The design of supramolecular structures involving carbon-rich molecules, such as arene hydrocarbons, has been limited almost exclusively to non-directional π-stacking, or derivatisation with heteroatoms to introduce molecular assembly recognition sites. As a result, the predictable assembly of non-derivatised, carbon-only π-systems using directional non-covalent interactions remains an unsolved fundamental challenge of solid-state supramolecular chemistry. Here, we propose and validate a different paradigm for the reliable assembly of carbon-only aromatic systems into predictable supramolecular architectures: not through non-directional π-stacking, but via specific and directional halogen bonding. We present a systematic experimental, theoretical and database study of halogen bonds to carbon-only π-systems (C-I⋯πC bonds), focusing on the synthesis and structural analysis of cocrystals with diversely-sized and -shaped non-derivatised arenes, from one-ring (benzene) to 15-ring (dicoronylene) polycyclic atomatic hydrocarbons (PAHs), and fullerene C60, along with theoretical calculations and a systematic analysis of the Cambridge Structural Database. This study establishes C-I⋯πC bonds as directional interactions to arrange planar and curved carbon-only aromatic systems into predictable supramolecular motifs. In >90% of herein presented structures, the C-I⋯πC bonds to PAHs lead to a general ladder motif, in which the arenes act as the rungs and halogen bond donors as the rails, establishing a unique example of a supramolecular synthon based on carbon-only molecules. Besides fundamental importance in the solid-state and supramolecular chemistry of arenes, this synthon enables access to materials with exciting properties based on simple, non-derivatised aromatic systems, as seen from large red and blue shifts in solid-state luminescence and room-temperature phosphorescence upon cocrystallisation.
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Affiliation(s)
- Jogirdas Vainauskas
- School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
- Department of Chemistry, McGill University 801 Sherbrooke St. W. H3A 0B8 Montreal Canada
| | - Tristan H Borchers
- School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
- Department of Chemistry, McGill University 801 Sherbrooke St. W. H3A 0B8 Montreal Canada
| | - Mihails Arhangelskis
- Faculty of Chemistry, University of Warsaw 1 Pasteura Street Warsaw 02-093 Poland
| | - Laura J McCormick McPherson
- EPSRC National Crystallography Service, School of Chemistry, University of Southampton, Highfield Southampton UK
| | - Toni S Spilfogel
- Department of Chemistry, McGill University 801 Sherbrooke St. W. H3A 0B8 Montreal Canada
| | - Ehsan Hamzehpoor
- Department of Chemistry, McGill University 801 Sherbrooke St. W. H3A 0B8 Montreal Canada
| | - Filip Topić
- Department of Chemistry, McGill University 801 Sherbrooke St. W. H3A 0B8 Montreal Canada
| | - Simon J Coles
- EPSRC National Crystallography Service, School of Chemistry, University of Southampton, Highfield Southampton UK
| | - Dmytro F Perepichka
- Department of Chemistry, McGill University 801 Sherbrooke St. W. H3A 0B8 Montreal Canada
| | - Christopher J Barrett
- Department of Chemistry, McGill University 801 Sherbrooke St. W. H3A 0B8 Montreal Canada
| | - Tomislav Friščić
- School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
- Department of Chemistry, McGill University 801 Sherbrooke St. W. H3A 0B8 Montreal Canada
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26
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Beau M, Jeannin O, Fourmigué M, Aubert E, Espinosa E, Lee S, Han WS, Jeon IR. Carborane-based heteromolecular extended networks driven by directional C-Te⋯N chalcogen bonding interactions. Chem Commun (Camb) 2023; 59:13727-13730. [PMID: 37909258 DOI: 10.1039/d3cc04338j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
We demonstrate that o-closo-(TeMe)2carborane directs, in the presence of linear ditopic neutral Lewis bases, the formation of co-crystals with 1D extended supramolecular networks. Specifically, the network formation is systematically stabilized by short and quasi-linear C-Te⋯N chalcogen-bonding (ChB) interactions. In sum, we report efficient carborane-based tectons to rationally design high-dimensional neutral heteromolecular networks.
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Affiliation(s)
- Maxime Beau
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), Campus de Beaulieu, Rennes 35000, France.
| | - Olivier Jeannin
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), Campus de Beaulieu, Rennes 35000, France.
| | - Marc Fourmigué
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), Campus de Beaulieu, Rennes 35000, France.
| | | | | | - Sunhee Lee
- Department of Chemistry, Seoul Women's University, Seoul 01797, Republic of Korea
| | - Won-Sik Han
- Department of Chemistry, Seoul Women's University, Seoul 01797, Republic of Korea
| | - Ie-Rang Jeon
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), Campus de Beaulieu, Rennes 35000, France.
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27
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Radiush EA, Wang H, Chulanova EA, Ponomareva YA, Li B, Wei QY, Salnikov GE, Petrakova SY, Semenov NA, Zibarev AV. Halide Complexes of 5,6-Dicyano-2,1,3-Benzoselenadiazole with 1 : 4 Stoichiometry: Cooperativity between Chalcogen and Hydrogen Bonding. Chempluschem 2023; 88:e202300523. [PMID: 37750466 DOI: 10.1002/cplu.202300523] [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: 09/19/2023] [Revised: 09/25/2023] [Accepted: 09/26/2023] [Indexed: 09/27/2023]
Abstract
The [M4 -Hal]- (M=the title compound; Hal=Cl, Br, and I) complexes were isolated in the form of salts of [Et4 N]+ cation and characterized by XRD, NMR, UV-Vis, DFT, QTAIM, EDD, and EDA. Their stoichiometry is caused by a cooperative interplay of σ-hole-driven chalcogen (ChB) and hydrogen (HB) bondings. In the crystal, [M4 -Hal]- are connected by the π-hole-driven ChB; overall, each [Hal]- is six-coordinated. In the ChB, the electrostatic interaction dominates over orbital and dispersion interactions. In UV-Vis spectra of the M+[Hal]- solutions, ChB-typical and [Hal]- -dependent charge-transfer bands are present; they reflect orbital interactions and allow identification of the individual [Hal]- . However, the structural situation in the solutions is not entirely clear. Particularly, the UV-Vis spectra of the solutions are different from the solid-state spectra of the [Et4 N]+ [M4 -Hal]- ; very tentatively, species in the solutions are assigned [M-Hal]- . It is supposed that the formation of the [M4 -Hal]- proceeds during the crystallization of the [Et4 N]+ [M4 -Hal]- . Overall, M can be considered as a chromogenic receptor and prototype sensor of [Hal]- . The findings are also useful for crystal engineering and supramolecular chemistry.
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Affiliation(s)
- Ekaterina A Radiush
- Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
| | - Hui Wang
- School of Physical Science and Technology, Southwest Jiaotong University, 610031, Chengdu, P. R. China
| | - Elena A Chulanova
- Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
- Current address: Institute for Applied Physics, University of Tübingen, 72076, Tübingen, Germany
| | - Yana A Ponomareva
- Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
- Department of Natural Sciences, National Research University - Novosibirsk State University, 630090, Novosibirsk, Russia
| | - Bin Li
- School of Physical Science and Technology, Southwest Jiaotong University, 610031, Chengdu, P. R. China
| | - Qiao Yu Wei
- School of Physical Science and Technology, Southwest Jiaotong University, 610031, Chengdu, P. R. China
| | - Georgy E Salnikov
- Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
| | - Svetlana Yu Petrakova
- Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
| | - Nikolay A Semenov
- Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
| | - Andrey V Zibarev
- Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
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28
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Ahsan MR, Singh L, Varma H, Mukherjee A. Exploiting benzilic acid as a modular template: controlling photoreactivity and solid to liquid transition during photodimerization. Chem Commun (Camb) 2023; 59:12711-12714. [PMID: 37811973 DOI: 10.1039/d3cc04257j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
A well-known molecule, benzilic acid, is used as a [2+2] photodimerization template by using third-generation crystal engineering principles. This template utilizes orthogonality and non-covalent interactions in an optimized way and is shown to be effective in tuning the photoreactivity of styryl pyridine derivatives. The photo-induced crystal-to-liquid transformation was observed during photodimerization. This phenomenon is explained based on slip plane and energy framework analysis.
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Affiliation(s)
- Mollah Rohan Ahsan
- Department of Chemistry, Birla Institute of Science and Technology (BITS) Pilani, Hyderabad campus, Hyderabad 500078, Telangana, India.
| | - Lavanya Singh
- Department of Chemistry, Birla Institute of Science and Technology (BITS) Pilani, Hyderabad campus, Hyderabad 500078, Telangana, India.
| | - Harshit Varma
- Department of Chemistry, Birla Institute of Science and Technology (BITS) Pilani, Hyderabad campus, Hyderabad 500078, Telangana, India.
| | - Arijit Mukherjee
- Department of Chemistry, Birla Institute of Science and Technology (BITS) Pilani, Hyderabad campus, Hyderabad 500078, Telangana, India.
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29
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Ahmed M, Lu W. Probing Complex Chemical Processes at the Molecular Level with Vibrational Spectroscopy and X-ray Tools. J Phys Chem Lett 2023; 14:9265-9278. [PMID: 37812752 DOI: 10.1021/acs.jpclett.3c02263] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Understanding the origins of structure and bonding at the molecular level in complex chemical systems spanning magnitudes in length and time is of paramount interest in physical chemistry. We have coupled vibrational spectroscopy and X-ray based techniques with a series of microreactors and aerosol beams to tease out intricate and sometimes subtle interactions, such as hydrogen bonding, proton transfer, and noncovalent interactions. This allows for unraveling the self-assembly of arginine-oleic acid complexes in an aqueous solution and growth processes in a metal-organic framework. Terahertz and infrared spectroscopy provide an intimate view of the hydrogen-bond network and associated phase changes with temperature in neopentyl glycol. The hydrogen-bond network in aqueous glycerol aerosols and levels of protonation of nicotine in aqueous aerosols are visualized. Future directions in probing the hydrogen-bond networks in deep eutectic solvents and organic frameworks are described, and we suggest how X-ray scattering coupled to X-ray spectroscopy can offer insight into the reactivity of organic aerosols.
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Affiliation(s)
- Musahid Ahmed
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Wenchao Lu
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- CSIRO Environment, Urrbrae, South Australia 5064, Australia
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30
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Rybczyńska M, Sikorski A. The synthesis, thermal behaviour, spectral and structural characterization, and in silico prediction of pharmacokinetic parameters of tetraalkylammonium salts of non-steroidal anti-inflammatory drug nimesulide. Sci Rep 2023; 13:17268. [PMID: 37828142 PMCID: PMC10570311 DOI: 10.1038/s41598-023-44557-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 10/10/2023] [Indexed: 10/14/2023] Open
Abstract
The synthesis, spectral properties, thermal analysis, structural characterization and in silico prediction of pharmacokinetic parameters of tetramethylammonium (compound 1) and tetraethylammonium (compound 2) salt of nimesulide were described in this article. Both compounds crystallize in the monoclinic P21/n space group, with one tetraalkylammonium cation and one nimesulide anion in the asymmetric unit and their crystal structures are stabilized by C-H···O hydrogen bonds between ions. Additionally, structures of title compounds are stabilized by π-π interactions (compound 1), or C-H···π interactions (compound 2) between nimesulide anions. The TG and DSC measurements show that compound 1 melts at a temperature higher than nimesulide, whereas the compound 2 melts at a temperature lower than nimesulide. The MALDI-TOF, 1H NMR, 13C NMR and ATR-FTIR analyses confirm the SCXRD study, that in compounds 1 and 2 nimesulide exists in an ionized form. Studies performed by SWISS ADME and ProTOX II tools, predict to be oral bioavailability of both salts obtained, and one of them (compound 1) is predicted to be well-absorbed by digestive system, while both compounds obtained are classified into toxicity class 4.
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Affiliation(s)
| | - Artur Sikorski
- Faculty of Chemistry, University of Gdańsk, W. Stwosza 63, 80-308, Gdańsk, Poland.
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31
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Fandaruff C, Quirós-Fallas MI, Vega-Baudrit JR, Navarro-Hoyos M, Lamas DG, Araya-Sibaja AM. Saquinavir-Piperine Eutectic Mixture: Preparation, Characterization, and Dissolution Profile. Pharmaceutics 2023; 15:2446. [PMID: 37896206 PMCID: PMC10609941 DOI: 10.3390/pharmaceutics15102446] [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: 08/09/2023] [Revised: 09/11/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
The dissolution rate of the anti-HIV drug saquinavir base (SQV), a poorly water-soluble and extremely low absolute bioavailability drug, was improved through a eutectic mixture formation approach. A screening based on a liquid-assisted grinding technique was performed using a 1:1 molar ratio of the drug and the coformers sodium saccharinate, theobromine, nicotinic acid, nicotinamide, vanillin, vanillic acid, and piperine (PIP), followed by differential scanning calorimetry (DSC). Given that SQV-PIP was the only resulting eutectic system from the screening, both the binary phase and the Tammann diagrams were adapted to this system using DSC data of mixtures prepared from 0.1 to 1.0 molar ratios in order to determine the exact eutectic composition. The SQV-PIP system formed a eutectic at a composition of 0.6 and 0.40, respectively. Then, a solid-state characterization through DSC, powder X-ray diffraction (PXRD), including small-angle X-ray scattering (SAXS) measurements to explore the small-angle region in detail, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and a powder dissolution test were performed. The conventional PXRD analyses suggested that the eutectic mixture did not exhibit structural changes; however, the small-angle region explored through the SAXS instrument revealed a change in the crystal structure of one of their components. FT-IR spectra showed no molecular interaction in the solid state. Finally, the dissolution profile of SQV in the eutectic mixture was different from the dissolution of pure SQV. After 45 min, approximately 55% of the drug in the eutectic mixture was dissolved, while, for pure SQV, 42% dissolved within this time. Hence, this study concludes that the dissolution rate of SQV can be effectively improved through the approach of using PIP as a coformer.
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Affiliation(s)
- Cinira Fandaruff
- Instituto de Tecnologías Emergentes y Ciencias Aplicadas (ITECA), UNSAM-CONICET, Escuela de Ciencia y Tecnología, Laboratorio de Cristalografía Aplicada, Av. 25 de Mayo 1169, San Martín 1650, Provincia de Buenos Aires, Argentina;
| | - María Isabel Quirós-Fallas
- Laboratorio Nacional de Nanotecnología, LANOTEC-CeNAT-CONARE, San José 1174-1200, Costa Rica; (M.I.Q.-F.); (J.R.V.-B.)
- Laboratorio Biodess, Escuela de Química, Universidad de Costa Rica, San Pedro de Montes de Oca, San José 2060, Costa Rica;
| | - José Roberto Vega-Baudrit
- Laboratorio Nacional de Nanotecnología, LANOTEC-CeNAT-CONARE, San José 1174-1200, Costa Rica; (M.I.Q.-F.); (J.R.V.-B.)
| | - Mirtha Navarro-Hoyos
- Laboratorio Biodess, Escuela de Química, Universidad de Costa Rica, San Pedro de Montes de Oca, San José 2060, Costa Rica;
| | - Diego German Lamas
- Instituto de Tecnologías Emergentes y Ciencias Aplicadas (ITECA), UNSAM-CONICET, Escuela de Ciencia y Tecnología, Laboratorio de Cristalografía Aplicada, Av. 25 de Mayo 1169, San Martín 1650, Provincia de Buenos Aires, Argentina;
| | - Andrea Mariela Araya-Sibaja
- Laboratorio Nacional de Nanotecnología, LANOTEC-CeNAT-CONARE, San José 1174-1200, Costa Rica; (M.I.Q.-F.); (J.R.V.-B.)
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32
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Maeda M, Oda K, Hisaki I, Tahara K. Influence of core size on self-assembled molecular networks composed of C3h-symmetric building blocks through hydrogen bonding interactions: structural features and chirality. RSC Adv 2023; 13:29512-29521. [PMID: 37822655 PMCID: PMC10562897 DOI: 10.1039/d3ra05762c] [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: 08/23/2023] [Accepted: 09/26/2023] [Indexed: 10/13/2023] Open
Abstract
The effect of the core size on the structure and chirality of self-assembled molecular networks was investigated using two aromatic carboxylic acid derivatives with frameworks displaying C3h symmetry, triphenylene derivative H3TTCA and dehydrobenzo[12]annulene (DBA) derivative DBACOOH, each having three carboxy groups per molecule. Scanning tunneling microscopy observations at the 1-heptanoic acid/graphite interface revealed H3TTCA exclusively forming a chiral honeycomb structure, and DBACOOH forming three structures (type I, II, and III structures) depending on its concentration and whether the system is subjected to annealing treatment. Hydrogen bonding interaction patterns and chirality were carefully analyzed based on a modeling study using molecular mechanics simulations. Moreover, DBACOOH forms chiral honeycomb structures through the co-adsorption of guest molecules. Structural diversity observed for DBACOOH is attributed to its relatively large core size, with this feature modulating the balance between molecule-molecule and molecule-substrate interactions.
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Affiliation(s)
- Matsuhiro Maeda
- Department of Applied Chemistry, School of Science and Technology, Meiji University 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Kotoka Oda
- Department of Applied Chemistry, School of Science and Technology, Meiji University 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
| | - Ichiro Hisaki
- Division of Chemistry, Graduate School of Engineering Science, Osaka University 1-3 Machikaneyama Toyonaka Osaka 560-8531 Japan
| | - Kazukuni Tahara
- Department of Applied Chemistry, School of Science and Technology, Meiji University 1-1-1 Higashimita, Tama-ku Kawasaki 214-8571 Japan
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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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34
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Samie A, Alavian H, Vafaei-Pour Z, Mohammadpour AH, Jafarian AH, Danesh NM, Abnous K, Taghdisi SM. Accelerated Wound Healing with a Diminutive Scar through Cocrystal Engineered Curcumin. Mol Pharm 2023; 20:5090-5107. [PMID: 37624646 DOI: 10.1021/acs.molpharmaceut.3c00398] [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: 08/27/2023]
Abstract
Pharmaceutical cocrystals ( Regulatory Classification of Pharmaceutical Co-Crystals Guidance for Industry; Food and Drug Administration, 2018) are crystalline solids produced through supramolecular chemistry to modulate the physicochemical properties of active pharmaceutical ingredients (APIs). Despite their extensive development in interdisciplinary sciences, this is a pioneering study on the efficacy of pharmaceutical cocrystals in wound healing and scar reducing. Curcumin-pyrogallol cocrystal (CUR-PYR) was accordingly cherry-picked since its superior physicochemical properties adequately compensate for limitative drawbacks of curcumin (CUR). CUR-PYR has been synthesized by a liquid-assisted grinding (LAG) method and characterized via FT-IR, DSC, and PXRD analyses. In vitro antibacterial study indicated that CUR-PYR cocrystal, CUR+PYR physical mixture (PM), and PYR are more effective against both Gram-negative (Pseudomonas aeruginosa and Escherichia coli) and Gram-positive (Staphylococcus aureus and Bacillus subtilis) bacteria in comparison with CUR. In vitro results also demonstrated that the viability of HDF and NIH-3T3 cells treated with CUR-PYR were improved more than those received CUR which is attributed to the effect of PYR in the form of cocrystal. The wound healing process has been monitored through a 15 day in vivo experiment on 75 male rats stratified into six groups: five groups treated by CUR-PYR+Vaseline (CUR-PYR.ung), CUR+PYR+Vaseline (CUR+PYR.ung), CUR+Vaseline (CUR.ung), PYR+Vaseline (PYR.ung), and Vaseline (VAS) ointments and a negative control group of 0.9% sodium chloride solution (NS). It was revealed that the wounds under CUR-PYR.ung treatment closed by day 12 postsurgery, while the wounds in other groups failed to reach the complete closure end point until the end of the experiment. Surprisingly, a diminutive scar (3.89 ± 0.97% of initial wound size) was observed in the CUR-PYR.ung treated wounds by day 15 after injury, followed by corresponding values for PYR.ung (12.08 ± 2.75%), CUR+PYR.ung (13.89 ± 5.02%), CUR.ung (16.24 ± 6.39%), VAS (18.97 ± 6.89%), and NS (20.33 ± 5.77%). Besides, investigating histopathological parameters including inflammation, granulation tissue, re-epithelialization, and collagen deposition signified outstandingly higher ability of CUR-PYR cocrystal in wound healing than either of its two constituents separately or their simple PM. It was concluded that desired solubility of the prepared cocrystal was essentially responsible for accelerating wound closure and promoting tissue regeneration which yielded minimal scarring. This prototype research suggests a promising application of pharmaceutical cocrystals for the purpose of wound healing.
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Affiliation(s)
- Ali Samie
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
| | - Hoda Alavian
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
| | - Zeinab Vafaei-Pour
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
| | - Amir Hooshang Mohammadpour
- Department of Clinical Pharmacy, School of Pharmacy, Mashhad University of Medical Science, Mashhad 9177948954, Iran
| | - Amir Hossein Jafarian
- Cancer and Molecular Research Center, Department of Pathology, School of Medicine, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
| | - Noor Mohammad Danesh
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
| | - Khalil Abnous
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
| | - Seyed Mohammad Taghdisi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
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35
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Som S, Hasija A, Chopra D. From liquid to crystal via mechanochemical grinding: unique host-guest (HOF) cocrystal. Acta Crystallogr C Struct Chem 2023; 79:399-408. [PMID: 37725080 DOI: 10.1107/s2053229623007519] [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: 05/10/2023] [Accepted: 08/28/2023] [Indexed: 09/21/2023] Open
Abstract
Mechanochemical synthesis via grinding of trimesic acid (TA, C9H6O6) and 4-chlorophenyl diphenyl phosphate (4CDP, C18H14ClO4P) (liquid at room temperature) in a 1:1 ratio resulted in the formation of an inclusion type of cocrystal. The crystallization of this phase via slow evaporation at low temperature (276-277 K) from methanol resulted in a rare `stairstep morphology' during the process of crystal growth. This morphology was not observed after crystallization of the compound from other solvents like toluene, dichloromethane, acetone, hexane and isooctane, and hence this was characteristically observed in methanol only. The characterization from single-crystal X-ray diffraction revealed the formation of a cocrystal with five molecules of TA and two molecules of 4CDP in the asymmetric unit. The trimesic acid molecules form hydrogen-bonded dimers resulting in hexagonal rings, and these rings are stacked through π-π intermolecular interactions to make a hexagonal honeycomb-like structure. The phosphate molecules, 4CDP, were found to be trapped as guests in these hexagonal channels. The similarity in the packing of trimesic acid is compared in the cocrystal and the free acid quantitatively via Xpac analysis, which establishes the relationship of a `2D supramolecular construct' between them. This signifies a unique type of arrangement in which the voids created by the trimesic acid moiety do not undergo distortion by the inclusion of the guest molecules. The quantitative analysis of the intermolecular interactions using Hirshfeld surfaces and fingerprint plots deciphers the role of both strong O-H...O hydrogen bonds and weak intermolecular interactions in the crystal packing.
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Affiliation(s)
- Shubham Som
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal by-Pass Road, Bhopal, Madhya Pradesh 462066, India
| | - Avantika Hasija
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal by-Pass Road, Bhopal, Madhya Pradesh 462066, India
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal by-Pass Road, Bhopal, Madhya Pradesh 462066, India
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36
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Marcinkowski D, Kubicki M, Patroniak V, Muzioł T, Chorazy S, Shi L, Zychowicz M, Majcher-Fitas AM, Podgajny R, Gorczyński A. Trityl-Based Lanthanide-Supramolecular Assemblies Exhibiting Slow Magnetic Relaxation. Chemistry 2023; 29:e202300695. [PMID: 37408381 DOI: 10.1002/chem.202300695] [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: 03/03/2023] [Revised: 06/26/2023] [Accepted: 07/03/2023] [Indexed: 07/07/2023]
Abstract
The triphenylmethane (trityl) group has been recognized as a supramolecular synthon in crystal engineering, molecular machine rotors and stereochemical chirality inductors in materials science. Herein we demonstrate for the first time how it can be utilized in the domain of molecular magnetic materials through shaping of single molecule magnet (SMM) properties within the lanthanide complexes in tandem with other non-covalent interactions. Trityl-appended mono- (HL1 ) and bis-compartmental (HL2 ) hydrazone ligands were synthesized and complexated with Dy(III) and Er(III) triflate and nitrate salts to generate four monometallic (1-4) and two bimetallic (5, 6) complexes. The static and dynamic magnetic properties of 1-6 were investigated, revealing that only ligand HL1 induces assemblies (1-4) capable of showing SMM behaviour, with Dy(III) congeners (1, 2) able to exhibit the phenomenon also under zero field conditions. Theoretical ab initio studies helped in determination of Dy(III) energetic levels, magnetic anisotropic axes and corroborated magnetic relaxation mechanisms to be a combination of Raman and quantum tunnelling in zero dc field, the latter being cancelled in the optimum non-zero dc field. Our work represents the first study of magneto-structural correlations within the trityl Ln-SMMs, leading to generation of slowly relaxing zero-field dysprosium complexes within the hydrogen-bonded assemblies.
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Affiliation(s)
- Dawid Marcinkowski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Maciej Kubicki
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Violetta Patroniak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Tadeusz Muzioł
- Nicolaus Copernicus University in Torun, Faculty of Chemistry, Jurija Gagarina 11, 87-100, Toruń, Poland
| | - Szymon Chorazy
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
| | - Le Shi
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
| | - Mikołaj Zychowicz
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
| | - Anna M Majcher-Fitas
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Łojasiewicza 11, 30-348, Kraków, Poland
| | - Robert Podgajny
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
| | - Adam Gorczyński
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
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37
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Rezaie F, Noorizadeh S. Theoretical investigation of tube-like supramolecular structures formed through bifurcated lithium bonds. Sci Rep 2023; 13:15260. [PMID: 37709798 PMCID: PMC10502010 DOI: 10.1038/s41598-023-41979-5] [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: 07/27/2023] [Accepted: 09/04/2023] [Indexed: 09/16/2023] Open
Abstract
The stability of three supramolecular naostructures, which are formed through the aggregation of identical belts of [12] arene containing p-nitrophenyllithium, 1,4-dilithiatedbenzene and 1,4-dinitrobenzene units, is investigated by density functional theory. The electrostatic potential calculations indicate the ability of these belts in forming bifurcated lithium bonds (BLBs) between the Li atoms of one belt and the oxygen atoms of the NO2 groups in the other belt, which is also confirmed by deformation density maps and quantum theory of atoms in molecules (QTAIM) analysis. Topological analysis and natural bond analysis (NBO) imply to ionic character for these BLBs with binding energies up to approximately - 60 kcal mol-1. The many-body interaction energy analysis shows the strong cooperativity belongs to the configuration with the highest symmetry (C4v) containing p-nitrophenyllithium fragments as the building unit. Therefore, it seems that this configuration could be a good candidate for designing a BLB-based supramolecular nanotube with infinite size in this study.
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Affiliation(s)
- Forough Rezaie
- Chemistry Department, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Siamak Noorizadeh
- Chemistry Department, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
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38
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Derewenda ZS. C-H Groups as Donors in Hydrogen Bonds: A Historical Overview and Occurrence in Proteins and Nucleic Acids. Int J Mol Sci 2023; 24:13165. [PMID: 37685972 PMCID: PMC10488043 DOI: 10.3390/ijms241713165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 08/21/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Hydrogen bonds constitute a unique type of non-covalent interaction, with a critical role in biology. Until fairly recently, the canonical view held that these bonds occur between electronegative atoms, typically O and N, and that they are mostly electrostatic in nature. However, it is now understood that polarized C-H groups may also act as hydrogen bond donors in many systems, including biological macromolecules. First recognized from physical chemistry studies, C-H…X bonds were visualized with X-ray crystallography sixty years ago, although their true significance has only been recognized in the last few decades. This review traces the origins of the field and describes the occurrence and significance of the most important C-H…O bonds in proteins and nucleic acids.
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Affiliation(s)
- Zygmunt Stanislaw Derewenda
- Department of Molecular Physiology and Biological Physics, School of Medicine, University of Virginia, Charlottesville, VA 22903-2628, USA
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39
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Aleksich M, Paley DW, Schriber EA, Linthicum W, Oklejas V, Mittan-Moreau DW, Kelly RP, Kotei PA, Ghodsi A, Sierra RG, Aquila A, Poitevin F, Blaschke JP, Vakili M, Milne CJ, Dall'Antonia F, Khakhulin D, Ardana-Lamas F, Lima F, Valerio J, Han H, Gallo T, Yousef H, Turkot O, Bermudez Macias IJ, Kluyver T, Schmidt P, Gelisio L, Round AR, Jiang Y, Vinci D, Uemura Y, Kloos M, Hunter M, Mancuso AP, Huey BD, Parent LR, Sauter NK, Brewster AS, Hohman JN. XFEL Microcrystallography of Self-Assembling Silver n-Alkanethiolates. J Am Chem Soc 2023; 145:17042-17055. [PMID: 37524069 DOI: 10.1021/jacs.3c02183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
New synthetic hybrid materials and their increasing complexity have placed growing demands on crystal growth for single-crystal X-ray diffraction analysis. Unfortunately, not all chemical systems are conducive to the isolation of single crystals for traditional characterization. Here, small-molecule serial femtosecond crystallography (smSFX) at atomic resolution (0.833 Å) is employed to characterize microcrystalline silver n-alkanethiolates with various alkyl chain lengths at X-ray free electron laser facilities, resolving long-standing controversies regarding the atomic connectivity and odd-even effects of layer stacking. smSFX provides high-quality crystal structures directly from the powder of the true unknowns, a capability that is particularly useful for systems having notoriously small or defective crystals. We present crystal structures of silver n-butanethiolate (C4), silver n-hexanethiolate (C6), and silver n-nonanethiolate (C9). We show that an odd-even effect originates from the orientation of the terminal methyl group and its role in packing efficiency. We also propose a secondary odd-even effect involving multiple mosaic blocks in the crystals containing even-numbered chains, identified by selected-area electron diffraction measurements. We conclude with a discussion of the merits of the synthetic preparation for the preparation of microdiffraction specimens and compare the long-range order in these crystals to that of self-assembled monolayers.
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Affiliation(s)
- Mariya Aleksich
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Daniel W Paley
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Elyse A Schriber
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Will Linthicum
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Vanessa Oklejas
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - David W Mittan-Moreau
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Ryan P Kelly
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Patience A Kotei
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Anita Ghodsi
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Raymond G Sierra
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Andrew Aquila
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Frédéric Poitevin
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Johannes P Blaschke
- National Energy Research Scientific Computing Center, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | | | | | | | | | | | | | - Joana Valerio
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Huijong Han
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Tamires Gallo
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
- MAX IV Laboratory, Lund University, Box 118, SE-22100 Lund, Sweden
| | - Hazem Yousef
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | | | | | | | - Luca Gelisio
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Adam R Round
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Yifeng Jiang
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Doriana Vinci
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Yohei Uemura
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Marco Kloos
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Mark Hunter
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Adrian P Mancuso
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
- Department of Chemistry and Physics, La Trobe University, Melbourne 3086, Australia
- Diamond Light Source, Harwell Science & Innovation Campus, Oxfordshire OX11 0DE, U.K
| | - Bryan D Huey
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Lucas R Parent
- Innovation Partnership Building, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Nicholas K Sauter
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Aaron S Brewster
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - J Nathan Hohman
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
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40
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Huang S, Cheemarla VKR, Tiana D, Lawrence SE. Exploring the Crystal Structure Landscape of Sulfasalazine through Various Multicomponent Crystals. CRYSTAL GROWTH & DESIGN 2023; 23:5446-5461. [PMID: 37547882 PMCID: PMC10401639 DOI: 10.1021/acs.cgd.2c01403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 05/31/2023] [Indexed: 08/08/2023]
Abstract
Sulfasalazine is used as an anti-inflammatory drug to treat large intestine diseases and atrophic arthritis. In the solid state, two tautomers are known: an amide tautomer (triclinic polymorph) and an imide tautomer (monoclinic polymorph). Crystallization of six new multicomponent solids of sulfasalazine with three cocrystal formers and three salt formers has been achieved by slurry, liquid-assisted grinding and slow evaporation methods. All of the solid forms are characterized by X-ray diffraction techniques, thermal analysis, and Fourier transform infrared spectroscopy. The crystal structural analysis reveals that two sulfasalazine molecules or anions arrange in a head-to-head fashion involving their pyridyl, amide, and sulfonyl groups in an R22(7):R22(8):R22(7) motif. This is the key structural unit appearing in both sulfasalazine imide polymorph and all six multicomponent crystals. In addition, sulfasalazine exists in the amide form in all unsolvated multicomponent crystals obtained in this work and adopts the imide tautomer in the solvated cocrystals and salt. Hirshfeld surface analysis and the associated two-dimensional (2D) fingerprint plots demonstrate that sulfasalazine has significant hydrogen bond donor capability when cocrystallized and is a significant hydrogen bond acceptor in the salts. The frontier molecular orbital analysis indicates that sulfasalazine cocrystals are chemically more stable than the salts.
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Affiliation(s)
- Shan Huang
- School
of Chemistry, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 K8AF, Ireland
- Analytical
and Biological Chemistry Research Facility, University College Cork, Cork T12 K8AF, Ireland
| | - Vinay K. R. Cheemarla
- School
of Chemistry, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 K8AF, Ireland
| | - Davide Tiana
- School
of Chemistry, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 K8AF, Ireland
| | - Simon E. Lawrence
- School
of Chemistry, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 K8AF, Ireland
- Analytical
and Biological Chemistry Research Facility, University College Cork, Cork T12 K8AF, Ireland
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41
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Morteza Najarian A, Dinic F, Chen H, Sabatini R, Zheng C, Lough A, Maris T, Saidaminov MI, García de Arquer FP, Voznyy O, Hoogland S, Sargent EH. Homomeric chains of intermolecular bonds scaffold octahedral germanium perovskites. Nature 2023; 620:328-335. [PMID: 37438526 DOI: 10.1038/s41586-023-06209-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 05/12/2023] [Indexed: 07/14/2023]
Abstract
Perovskites with low ionic radii metal centres (for example, Ge perovskites) experience both geometrical constraints and a gain in electronic energy through distortion; for these reasons, synthetic attempts do not lead to octahedral [GeI6] perovskites, but rather, these crystallize into polar non-perovskite structures1-6. Here, inspired by the principles of supramolecular synthons7,8, we report the assembly of an organic scaffold within perovskite structures with the goal of influencing the geometric arrangement and electronic configuration of the crystal, resulting in the suppression of the lone pair expression of Ge and templating the symmetric octahedra. We find that, to produce extended homomeric non-covalent bonding, the organic motif needs to possess self-complementary properties implemented using distinct donor and acceptor sites. Compared with the non-perovskite structure, the resulting [GeI6]4- octahedra exhibit a direct bandgap with significant redshift (more than 0.5 eV, measured experimentally), 10 times lower octahedral distortion (inferred from measured single-crystal X-ray diffraction data) and 10 times higher electron and hole mobility (estimated by density functional theory). We show that the principle of this design is not limited to two-dimensional Ge perovskites; we implement it in the case of copper perovskite (also a low-radius metal centre), and we extend it to quasi-two-dimensional systems. We report photodiodes with Ge perovskites that outperform their non-octahedral and lead analogues. The construction of secondary sublattices that interlock with an inorganic framework within a crystal offers a new synthetic tool for templating hybrid lattices with controlled distortion and orbital arrangement, overcoming limitations in conventional perovskites.
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Affiliation(s)
- Amin Morteza Najarian
- The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Filip Dinic
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - Hao Chen
- The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Randy Sabatini
- The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Chao Zheng
- The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Alan Lough
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - Thierry Maris
- Département de Chimie, Université de Montréal, Montréal, Québec, Canada
| | - Makhsud I Saidaminov
- Department of Chemistry, University of Victoria, Victoria, British Columbia, Canada
| | - F Pelayo García de Arquer
- Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Oleksandr Voznyy
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - Sjoerd Hoogland
- The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Edward H Sargent
- The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada.
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42
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Iglesias-Reguant A, Reis H, Medved' M, Ośmiałowski B, Zaleśny R, Luis JM. Decoding the infrared spectra changes upon formation of molecular complexes: the case of halogen bonding in pyridine⋯perfluorohaloarene complexes. Phys Chem Chem Phys 2023. [PMID: 37466634 DOI: 10.1039/d3cp02412a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
A recently developed computational scheme is employed to interpret changes in the infrared spectra of halogen-bonded systems in terms of intermolecular interaction energy components (electrostatic, exchange, induction, dispersion) taking pyridine⋯perfluorohaloarene complexes as examples. For all complexes, we find a strong linear correlation between the different terms of the interaction-induced changes of the IR band associated with an intermolecular halogen bond stretching mode and the corresponding terms of the interaction energy, which implies that the interaction components play similar roles in both properties. This is not true for other vibrational modes localized in one of the monomers studied here, for which the corresponding interaction-induced changes in IR bands may present a completely different decomposition than the interaction energy.
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Affiliation(s)
- Alex Iglesias-Reguant
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, PL-87100 Toruń, Poland
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, Campus de Montilivi, 17003, Girona, Catalonia, Spain.
| | - Heribert Reis
- Institute of Chemical Biology, National Hellenic Research Foundation (NHRF), Vassileos Constantinou Ave 48th, 116 35 Athens, Greece
| | - Miroslav Medved'
- Department of Chemistry, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, SK-97400 Banská Bystrica, Slovak Republic
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University in Olomouc, Šlechtitelu 27, 783 71 Olomouc, Czech Republic
| | - Borys Ośmiałowski
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, PL-87100 Toruń, Poland
| | - Robert Zaleśny
- Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Josep M Luis
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, Campus de Montilivi, 17003, Girona, Catalonia, Spain.
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43
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Turelli M, Ciofini I, Wang Q, Ottochian A, Labat F, Adamo C. Organic compounds for solid state luminescence enhancement/aggregation induced emission: a theoretical perspective. Phys Chem Chem Phys 2023; 25:17769-17786. [PMID: 37377211 DOI: 10.1039/d3cp02364h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
Organic luminophores displaying one or more forms of luminescence enhancement in solid state are extremely promising for the development and performance optimization of functional materials essential to many modern key technologies. Yet, the effort to harness their huge potential is riddled with hurdles that ultimately come down to a limited understanding of the interactions that result in the diverse molecular environments responsible for the macroscopic response. In this context, the benefits of a theoretical framework able to provide mechanistic explanations to observations, supported by quantitative predictions of the phenomenon, are rather apparent. In this perspective, we review some of the established facts and recent developments about the current theoretical understanding of solid-state luminescence enhancement (SLE) with an accent on aggregation-induced emission (AIE). A description of the macroscopic phenomenon and the questions it raises is accompanied by a discussion of the approaches and quantum chemistry methods that are more apt to model these molecular systems with the inclusion of an accurate yet efficient simulation of the local environment. A sketch of a general framework, building from the current available knowledge, is then attempted via the analysis of a few varied SLE/AIE molecular systems from literature. A number of fundamental elements are identified offering the basis for outlining design rules for molecular architectures exhibiting SLE that involve specific structural features with the double role of modulating the optical response of the luminophores and defining the environment they experience in solid state.
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Affiliation(s)
- Michele Turelli
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Theoretical Chemistry and Modeling Team, 75005 Paris, France.
| | - Ilaria Ciofini
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Theoretical Chemistry and Modeling Team, 75005 Paris, France.
| | - Qinfan Wang
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Theoretical Chemistry and Modeling Team, 75005 Paris, France.
| | - Alistar Ottochian
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Theoretical Chemistry and Modeling Team, 75005 Paris, France.
| | - Frédéric Labat
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Theoretical Chemistry and Modeling Team, 75005 Paris, France.
| | - Carlo Adamo
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Theoretical Chemistry and Modeling Team, 75005 Paris, France.
- Institut Universitaire de France, 103 Boulevard Saint Michel, F-75005 Paris, France
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44
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Ahmadi S, Rohani S. Overcoming the Hydrophobic Nature of Zinc Phenylacetate Through Co-Crystallization with Isonicotinamide. J Pharm Sci 2023; 112:1929-1938. [PMID: 36893962 DOI: 10.1016/j.xphs.2023.02.026] [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: 11/23/2022] [Revised: 02/28/2023] [Accepted: 02/28/2023] [Indexed: 03/09/2023]
Abstract
Zinc phenylacetate (Zn-PA), a substitute for sodium phenylacetate as an ammonia-scavenging drug is hydrophobic, which poses problems for drug dissolution and solubility. We were able to co-crystallize the zinc phenylacetate with isonicotinamide (INAM) and produce a novel crystalline compound (Zn-PA-INAM). The single crystal of this new crystal was obtained, and its structure is reported here for the first time. Zn-PA-INAM was characterized computationally by ab initio, Hirshfeld calculations, CLP-PIXEL lattice energy calculation, and BFDH morphology analysis, and experimentally by PXRD, Sc-XRD, FTIR, DSC, and TGA analyses. Structural and vibrational analyses showed a major modification in intermolecular interaction of Zn-PA-INAM compared to Zn-PA. The dispersion-based pi-stacking in Zn-PA is replaced by coulomb-polarization effect of hydrogen bonds. As a result, Zn-PA-INAM is hydrophilic, improving the wettability and powder dissolution of the target compound in an aqueous solution. Morphology analysis revealed, unlike Zn-PA, Zn-PA-INAM has polar groups exposed on its prominent crystalline faces, reducing the hydrophobicity of the crystal. The shift in average water droplet contact angle from 128.1° (Zn-PA) to 27.1° (Zn-PA-INAM) is strong evidence of a marked decrease in hydrophobicity of the target compound. Finally, HPLC was used to obtain the dissolution profile and solubility of Zn-PA-INAM compared to Zn-PA.
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Affiliation(s)
- Soroush Ahmadi
- Chemical and Biochemical Engineering, Western University, London, Ontario, N6A 5B9, Canada
| | - Sohrab Rohani
- Chemical and Biochemical Engineering, Western University, London, Ontario, N6A 5B9, Canada.
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45
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Rai SK, Marverti G, Gunnam A, Allu S, Nangia AK. Dabrafenib-Panobinostat Salt: Improving the Dissolution Rate and Inhibition of BRAF Melanoma Cells. ACS OMEGA 2023; 8:18255-18265. [PMID: 37251170 PMCID: PMC10210236 DOI: 10.1021/acsomega.3c01881] [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: 03/20/2023] [Accepted: 04/25/2023] [Indexed: 05/31/2023]
Abstract
Cocrystallization of the drug-drug salt-cocrystal of the histone deacetylase inhibitor (HDACi) panobinostat (PAN) and b-rapidly accelerated fibrosarcoma (BRAF) inhibitor dabrafenib (DBF) afforded single crystals of a two-drug salt stabilized by N+-H···O and N+-H···N- hydrogen bonds between the ionized panobinostat ammonium donor and dabrafenib sulfonamide anion acceptor in a 12-member ring motif. A faster dissolution rate for both drugs was achieved through the salt combination compared to the individual drugs in an aqueous acidic medium. The dissolution rate exhibited a peak concentration (Cmax) of approximately 310 mg cm-2 min-1 for PAN and 240 mg cm-2 min-1 for DBF at a Tmax of less than 20 min under gastric pH 1.2 (0.1 N HCl) compared to the pure drug dissolution values of 10 and 80 mg cm-2 min-1, respectively. The novel and fast-dissolving salt DBF-·PAN+ was analyzed in BRAFV600E melanoma cells Sk-Mel28. DBF-·PAN+ reduced the dose-response from micromolar to nanomolar concentrations and lowered IC50 (21.9 ± 7.2 nM) by half compared to PAN alone (45.3 ± 12.0 nM). The enhanced dissolution and lower survival rate of melanoma cells show the potential of novel DBF-·PAN+ salt in clinical evaluation.
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Affiliation(s)
- Sunil K. Rai
- Department
of Chemistry, Faculty of Science, University
of Lucknow, Lucknow 226025, Uttar Pradesh, India
- Organic
Chemistry Division, CSIR-National Chemical
Laboratory (NCL), Pune 411 008, Maharashtra, India
| | - Gaetano Marverti
- Department
of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Anilkumar Gunnam
- School
of Chemistry, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Central University P.O., Hyderabad 500
046, India
| | - Suryanarayana Allu
- School
of Chemistry, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Central University P.O., Hyderabad 500
046, India
| | - Ashwini K. Nangia
- Organic
Chemistry Division, CSIR-National Chemical
Laboratory (NCL), Pune 411 008, Maharashtra, India
- School
of Chemistry, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Central University P.O., Hyderabad 500
046, India
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46
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Germann LS, Carlino E, Taurino A, Magdysyuk OV, Voinovich D, Dinnebier RE, Bučar D, Hasa D. Modulating Thermal Properties of Polymers through Crystal Engineering. Angew Chem Int Ed Engl 2023; 62:e202212688. [PMID: 36617841 PMCID: PMC10947328 DOI: 10.1002/anie.202212688] [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: 08/28/2022] [Revised: 12/12/2022] [Accepted: 01/04/2023] [Indexed: 01/10/2023]
Abstract
Crystal engineering has exclusively focused on the development of advanced materials based on small organic molecules. We now demonstrate how the cocrystallization of a polymer yields a material with significantly enhanced thermal stability but equivalent mechanical flexibility. Isomorphous replacement of one of the cocrystal components enables the formation of solid solutions with melting points that can be readily fine-tuned over a usefully wide temperature range. The results of this study credibly extend the scope of crystal engineering and cocrystallization from small molecules to polymers.
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Affiliation(s)
- Luzia S. Germann
- Max Planck Institute for Solid State ResearchHeisenberg Straße 170569StuttgartGermany
| | - Elvio Carlino
- Istituto di Cristallografia—Consiglio Nazionale delle Ricerche (IC—CNR)Via Amendola 122/O70126BariItaly
| | - Antonietta Taurino
- Institute for Microelectronics and Microsystems, Consiglio Nazionale delle Ricerche (IMM—CNR)Via Monteroni73100LecceItaly
| | - Oxana V. Magdysyuk
- Diamond Light Source Ltd.Harwell Science and Innovation CampusDidcotOX11 0DEUK
| | - Dario Voinovich
- Department of Chemical and Pharmaceutical SciencesUniversity of TriesteVia Giorgieri 134127TriesteItaly
| | - Robert E. Dinnebier
- Max Planck Institute for Solid State ResearchHeisenberg Straße 170569StuttgartGermany
| | - Dejan‐Krešimir Bučar
- Department of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | - Dritan Hasa
- Department of Chemical and Pharmaceutical SciencesUniversity of TriesteVia Giorgieri 134127TriesteItaly
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47
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Huang S, Cheemarla VKR, Tiana D, Lawrence SE. Experimental and Theoretical Investigation of Hydrogen-Bonding Interactions in Cocrystals of Sulfaguanidine. CRYSTAL GROWTH & DESIGN 2023; 23:2306-2320. [PMID: 37038403 PMCID: PMC10080660 DOI: 10.1021/acs.cgd.2c01337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 02/11/2023] [Indexed: 06/19/2023]
Abstract
Pharmaceutical cocrystals, a type of multicomponent crystalline material incorporating two or more molecular and/or ionic compounds connected by noncovalent interactions (such as hydrogen bonds, π-π interactions, and halogen bonds), are attracting increasing attention in crystal engineering. Sulfaguanidine (SGD), one of the most frequently used sulfonamide compounds, was chosen as a model compound in this work to further investigate the hydrogen bond interactions in cocrystals, since it possesses various hydrogen bond donor and acceptor sites. Five cocrystals of SGD, synthesized successfully by slurry and slow evaporation methods, were fully characterized by thermal analysis, X-ray techniques, and Fourier transform infrared spectroscopy. To gain insight into the nature of hydrogen-bonding interactions, theoretical calculations including the analysis of Hirshfeld surface, MEPS (molecular electrostatic potential surface), and QTAIM (quantum theory of atoms in molecules) were conducted. The results are a part of a systematic study of cocrystals of sulfonamides that aims to establish synthon hierarchies in cocrystals containing molecules with multiple hydrogen-bonding functional groups.
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Affiliation(s)
- Shan Huang
- School of Chemistry, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 K8AF, Ireland
- Analytical and Biological Chemistry Research Facility, University College Cork, Cork T12 K8AF, Ireland
| | - Vinay K R Cheemarla
- School of Chemistry, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 K8AF, Ireland
| | - Davide Tiana
- School of Chemistry, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 K8AF, Ireland
| | - Simon E Lawrence
- School of Chemistry, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 K8AF, Ireland
- Analytical and Biological Chemistry Research Facility, University College Cork, Cork T12 K8AF, Ireland
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48
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Rajbongshi T, Sarmah KK, Das S, Deka P, Saha A, Saha BK, Puschmann H, Reddy CM, Thakuria R. Non-stoichiometric carbamazepine cocrystal hydrates of 3,4-/3,5-dihydroxybenzoic acids: coformer-water exchange. Chem Commun (Camb) 2023; 59:3902-3905. [PMID: 36919569 DOI: 10.1039/d2cc06860e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
The cocrystallisation of carbamazepine (CBZ) with 3,4-/3,5-dihydroxybenzoic acids (34/35DHBA) with different stoichiometries formed molecular alloys, exchanging a water molecule, in their isostructural CBZ dihydrate form. Furthermore, we show a correlation between the mechanical properties of the CBZ-DHBA cocrystals with the amount of coformer present.
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Affiliation(s)
| | - Kashyap Kumar Sarmah
- Department of Chemistry, Behali Degree College, Borgang, Biswanath, 784167, Assam, India
| | - Susobhan Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur, 741246, India.
| | - Poonam Deka
- Department of Chemistry, Gauhati University, Guwahati, 781014, India.
| | - Arijit Saha
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur, 741246, India. .,Department of Chemistry, Pondicherry University, Pondicherry, India
| | - Binoy K Saha
- Department of Chemistry, Pondicherry University, Pondicherry, India
| | - Horst Puschmann
- OlexSys Ltd, Durham University, South Road, Durham, DH1 3LE, UK
| | - C Malla Reddy
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur, 741246, India.
| | - Ranjit Thakuria
- Department of Chemistry, Gauhati University, Guwahati, 781014, India.
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49
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Surov AO, Ramazanova AG, Voronin AP, Drozd KV, Churakov AV, Perlovich GL. Virtual Screening, Structural Analysis, and Formation Thermodynamics of Carbamazepine Cocrystals. Pharmaceutics 2023; 15:pharmaceutics15030836. [PMID: 36986697 PMCID: PMC10052035 DOI: 10.3390/pharmaceutics15030836] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
In this study, the existing set of carbamazepine (CBZ) cocrystals was extended through the successful combination of the drug with the positional isomers of acetamidobenzoic acid. The structural and energetic features of the CBZ cocrystals with 3- and 4-acetamidobenzoic acids were elucidated via single-crystal X-ray diffraction followed by QTAIMC analysis. The ability of three fundamentally different virtual screening methods to predict the correct cocrystallization outcome for CBZ was assessed based on the new experimental results obtained in this study and data available in the literature. It was found that the hydrogen bond propensity model performed the worst in distinguishing positive and negative results of CBZ cocrystallization experiments with 87 coformers, attaining an accuracy value lower than random guessing. The method that utilizes molecular electrostatic potential maps and the machine learning approach named CCGNet exhibited comparable results in terms of prediction metrics, albeit the latter resulted in superior specificity and overall accuracy while requiring no time-consuming DFT computations. In addition, formation thermodynamic parameters for the newly obtained CBZ cocrystals with 3- and 4-acetamidobenzoic acids were evaluated using temperature dependences of the cocrystallization Gibbs energy. The cocrystallization reactions between CBZ and the selected coformers were found to be enthalpy-driven, with entropy terms being statistically different from zero. The observed difference in dissolution behavior of the cocrystals in aqueous media was thought to be caused by variations in their thermodynamic stability.
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Affiliation(s)
- Artem O Surov
- G.A. Krestov Institute of Solution Chemistry RAS, 153045 Ivanovo, Russia
| | - Anna G Ramazanova
- G.A. Krestov Institute of Solution Chemistry RAS, 153045 Ivanovo, Russia
| | | | - Ksenia V Drozd
- G.A. Krestov Institute of Solution Chemistry RAS, 153045 Ivanovo, Russia
| | - Andrei V Churakov
- Institute of General and Inorganic Chemistry RAS, Leninsky Prosp. 31, 119991 Moscow, Russia
| | - German L Perlovich
- G.A. Krestov Institute of Solution Chemistry RAS, 153045 Ivanovo, Russia
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50
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Intriguing π-interactions involving aromatic neutrals, aromatic cations and semiconducting behavior in a pyridinium-carboxylate salt. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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