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Holikulov U, Kazachenko AS, Issaoui N, Kazachenko AS, Raja M, Al-Dossary OM, Xiang Z. The molecular structure, vibrational spectra, solvation effect, non-covalent interactions investigations of psilocin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 320:124600. [PMID: 38852303 DOI: 10.1016/j.saa.2024.124600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/27/2024] [Accepted: 06/04/2024] [Indexed: 06/11/2024]
Abstract
Psilocin, or 4-HO-DMT (or 3-(2-dimethylaminoethyl)-1H-indol-4-ol), is a psychoactive alkaloid substance from the tryptamine family, isolated from Psilocybe mushrooms. This substance is being studied by various research groups because it has a clear therapeutic effect in certain dosages. In this work, the study of the structure and properties of psilocin was carried using theoretical methods: the effects of polar solvents (acetonitrile, dimethylsulfoxide, water, and tetrahydrofuran) on the structural parameters, spectroscopic properties (Raman, IR, and UV-Vis), frontier molecular orbital (FMO), molecular electrostatic potential (MEP) surface, and nonlinear optical parameters (NLO). Theoretical calculations were performed at the B3LYP/6-311++G(d,p) level by the density functional theory (DFT) method. IEFPCM was used to account for solvent effects. The types and nature of non-covalent interactions (NCI) between psilocin and solvent molecules were determined using Atoms in Molecules (AIM), the reduced density gradient method (RDG), the electron localization function (ELF), and the localization orbital locator (LOL). Experimental and calculated FT-IR, FT-Raman, and UV-Vis spectra were compared and found to be in good agreement.
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Affiliation(s)
- Utkirjon Holikulov
- Department of Optics and Spectroscopy, Samarkand State University, 15 University Blvd., 140104 Samarkand, Uzbekistan
| | - Aleksandr S Kazachenko
- Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center, Krasnoyarsk Science Center SB RAS, Akademgorodok, 50/24, Krasnoyarsk 660036, Russia; Siberian Federal University, pr. Svobodny 79, Krasnoyarsk 660041 Russia.
| | - Noureddine Issaoui
- Laboratory of Quantum and Statistical Physics, University Monastir, Monastir 5079, Tunisia
| | - Anna S Kazachenko
- Siberian Federal University, pr. Svobodny 79, Krasnoyarsk 660041 Russia
| | - Murugesan Raja
- Department of Physics, Govt. Thirumagal Mills College, Gudiyatham, Vellore 632602, India
| | - Omar M Al-Dossary
- Department of Physics and Astronomy, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
| | - Zhouyang Xiang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640 China
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2
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Bakhite E, Mohamed SK, Lai CH, Subramani K, Marae IS, Abuelhassan S, Soliman AAE, Youssef MSK, Abuelizz HA, Mague JT, Al-Salahi R, El Bakri Y. Synthesis, Crystal Structure, Hirshfeld Surface Analysis, and Computational Approach of a New Pyrazolo[3,4- g]isoquinoline Derivative as Potent against Leucine-Rich Repeat Kinase 2 (LRRK2). ACS OMEGA 2024; 9:30751-30770. [PMID: 39035914 PMCID: PMC11256088 DOI: 10.1021/acsomega.4c03208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 06/22/2024] [Accepted: 06/25/2024] [Indexed: 07/23/2024]
Abstract
Ethyl-2-((8-cyano-3,5,9a-trimethyl-1-(4-oxo-4,5-dihydrothiazol-2-yl)-4-phenyl-3a,4,9,9a-tetrahydro-1H-pyrazolo[3,4-g]isoquinolin-7-yl)thio)acetate (5) was synthesized, and its structure was characterized by IR, MS, and NMR (1H and 13C) and verified by a single-crystal X-ray structure determination. Compound 5 adopts a "pincer" conformation. In the crystal, the hydrogen bonds of -H···O, C-H···O, and O-H···S form thick layers of molecules that are parallel to (101). The layers are linked by C-H···π(ring) interactions. The Hirshfeld surface analysis shows that intermolecular hydrogen bonding plays a more important role than both intramolecular hydrogen bonding and π···π stacking in the crystal. The intramolecular noncovalent interactions in 5 were studied by QTAIM, NCI, and DFT-NBO calculations. Based on structural activity relationship studies, leucine-rich repeat kinase 2 (LRRK2) was found to bind 5 and was further subjected to molecular docking studies, molecular dynamics, and ADMET analysis to probe potential drug candidacy.
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Affiliation(s)
- Etify
A. Bakhite
- Department
of Chemistry, Faculty of Science, Assiut
University, Assiut 71516, Egypt
| | - Shaaban Kamel Mohamed
- Chemistry
and Environmental Division, Manchester Metropolitan
University, Manchester M1 5GD, England
- Chemistry
Department, Faculty of Science, Minia University, El-Minia 61519, Egypt
| | - Chin-Hung Lai
- Department
of Medical Applied Chemistry, Chung Shan
Medical University, Taichung 40241, Taiwan
- Department
of Medical Education, Chung Shan Medical
University Hospital, Taichung 40201, Taiwan
| | - Karthikeyan Subramani
- Center
for
Healthcare Advancement, Innovation and Research, Vellore Institute of Technology University, Chennai Campus, Chennai 600127, India
| | - Islam S. Marae
- Department
of Chemistry, Faculty of Science, Assiut
University, Assiut 71516, Egypt
| | - Suzan Abuelhassan
- Department
of Chemistry, Faculty of Science, Assiut
University, Assiut 71516, Egypt
| | | | | | - Hatem A. Abuelizz
- Department
of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Joel T. Mague
- Department
of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Rashad Al-Salahi
- Department
of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Youness El Bakri
- Department
of Theoretical and Applied Chemistry, South
Ural State University, Lenin prospect 76, Chelyabinsk 454080, Russian Federation
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Roufieda Guerroudj A, Ullah Mughal E, Naeem N, Sadiq A, Al-Fahemi JH, Asghar BH, Boukabcha N, Chouaih A, Ahmed SA. Exploring Pyrimidine-Based azo Dyes: Vibrational spectroscopic Assignments, TD-DFT Investigation, chemical Reactivity, HOMO-LUMO, ELF, LOL and NCI-RDG analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 313:124093. [PMID: 38428162 DOI: 10.1016/j.saa.2024.124093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 02/25/2024] [Accepted: 02/26/2024] [Indexed: 03/03/2024]
Abstract
Theoretical computations of pyrimidine-based azo dyes were performed by the DFT approach using the B3LYP/6 - 31G(d,p) basis set. The molecules were optimized based on the same basis set by calculating the minimum energy. FMOs, DOS and GCRD were computed for kinetic stability and chemical reactivity of the selected compounds. The MEP surface was studied to locate nucleophilic and electrophilic attack zones. The energy gap was carefully studied for pyrimidine-based azo dyes. Vibrational spectroscopy was studied in the most prominent regions with respect to PED assignments. Similarly, the UV-Vis absorption technique was calculated using the TD-DFT approach in different solvent media. The electronic structure of each atom in a molecule was examined via the electron localization function (ELF) and localized orbital locator (LOL). Non-covalent interactions were explored using reduced density gradient analysis. The combination of experimental and theoretical data allowed us to correlate the structural modifications with the observed photophysical properties, facilitating the design of azo dyes with tailored characteristics. This work contributes to the fundamental understanding of azo dyes and offers a foundation for the development of new materials with enhanced photophysical and electronic properties.
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Affiliation(s)
- Ahlam Roufieda Guerroudj
- Laboratory of Technology and Solid Properties (LTPS), Abdelhamid Ibn Badis University of Mostaganem, 27000 Mostaganem, Algeria; Process Engineering Department, Faculty of Technology, Dr. Moulay Tahar University of Saïda, 20000 Saida, Algeria
| | | | - Nafeesa Naeem
- Department of Chemistry, University of Gujrat, Gujrat-50700, Pakistan
| | - Amina Sadiq
- Department of Chemistry, Govt. College Women University, Sialkot-51300, Pakistan
| | - Jabir H Al-Fahemi
- Department of Chemistry, Faculty of Science, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Basim H Asghar
- Department of Chemistry, Faculty of Science, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Nourdine Boukabcha
- Laboratory of Technology and Solid Properties (LTPS), Abdelhamid Ibn Badis University of Mostaganem, 27000 Mostaganem, Algeria; Chemistry Department, Faculty of Exact Sciences and Informatic, Hassiba Benbouali University, Chlef, 02000, Algeria
| | - Abdelkader Chouaih
- Laboratory of Technology and Solid Properties (LTPS), Abdelhamid Ibn Badis University of Mostaganem, 27000 Mostaganem, Algeria
| | - Saleh A Ahmed
- Department of Chemistry, Faculty of Science, Umm Al-Qura University, Makkah 21955, Saudi Arabia; Chemistry Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt.
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4
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Jasim LMM, Homayouni Tabrizi M, Darabi E, Jaseem MMM. The antioxidant, anti-angiogenic, and anticancer impact of chitosan-coated herniarin-graphene oxide nanoparticles (CHG-NPs). Heliyon 2023; 9:e20042. [PMID: 37809932 PMCID: PMC10559767 DOI: 10.1016/j.heliyon.2023.e20042] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 09/08/2023] [Accepted: 09/08/2023] [Indexed: 10/10/2023] Open
Abstract
Background Herniarin, a simple coumarin found in chamomile leaf rosettes is known as the oxidative stress protector. In the current study, herniarin was captured into Graphene oxide nanoparticles and coated with chitosan poly-cationic polymer to be used as a novel bio-compatible nano-drug delivery system and investigate its antioxidant, anti-angiogenic and anti-cancer impacts on human lung A549 cancer cells. Method The Chitosan-coated Herniarin-Graphene oxide nanoparticles (CHG-NPs) were designed, produced, and characterized utilizing DLS, FESEM, FTIR, and Zeta-potential analysis. The CHG-NPs' antioxidant activity was analyzed by conducting ABTS and DPPH antioxidant assays. The CHG-NPs' anti-angiogenic activity was analyzed by CAM assay and verified by measuring VEGF and VEGFR gene expression levels following their increased treatment doses by applying Q-PCR technique. Finally, the CHG-NPs' cytotoxicity was studied in the human lung A549 cancer cells. Result The stable (+27.11 mV) 213.6-nm CHG-NPs significantly inhibited the ABTS/DPPH free radicals and exhibited antioxidant activity. The suppressed angiogenesis process in the CAM vessels was observed by detecting the decreased length/number of the vessels. Moreover, the down-regulated VEGF and VEGFR gene expression of the CAM blood vessels following the increased CHG-NPs treatment doses verified the nanoparticles' anti-angiogenic potential. Finally, the CHG-NPs significantly exhibited a selective cytotoxic impact on human A549 cancer cells compared with the normal HFF cell line. Conclusion The selective cytotoxicity, strong antioxidant activity, and significant anti-angiogenic property of the nano-scaled produced CHG-NPs make it an appropriate anticancer nano-drug delivery system. Therefore, the CHG-NPs have the potential to be used as a selective anti-lung cancer compound.
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Affiliation(s)
| | | | - Elham Darabi
- Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
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5
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Enhanced NSAIDs Solubility in Drug-Drug Formulations with Ciprofloxacin. Int J Mol Sci 2023; 24:ijms24043305. [PMID: 36834716 PMCID: PMC9964002 DOI: 10.3390/ijms24043305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/12/2023] [Accepted: 02/06/2023] [Indexed: 02/10/2023] Open
Abstract
Drug-drug salts are a kind of pharmaceutical multicomponent solid in which the two co-existing components are active pharmaceutical ingredients (APIs) in their ionized forms. This novel approach has attracted great interest in the pharmaceutical industry since it not only allows concomitant formulations but also has proved potential to improve the pharmacokinetics of the involved APIs. This is especially interesting for those APIs that have relevant dose-dependent secondary effects, such as non-steroidal anti-inflammatory drugs (NSAIDs). In this work, six multidrug salts involving six different NSAIDs and the antibiotic ciprofloxacin are reported. The novel solids were synthesized using mechanochemical methods and comprehensively characterized in the solid state. Moreover, solubility and stability studies, as well as bacterial inhibition assays, were performed. Our results suggest that our drug-drug formulations enhanced the solubility of NSAIDs without affecting the antibiotic efficacy.
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6
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Chethan B, Lokanath N. Study of the crystal structure, H-bonding and noncovalent interactions of novel cocrystal by systematic computational search approach. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131936] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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7
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Computational evaluation on the molecular conformation, vibrational spectroscopy, NBO analysis and molecular docking of betaxolol and betaxolol-chlorthalidone cocrystals. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127744] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Toozandejani T, Beyramabadi SA, Chegini H, Khashi M, Morsali A, Pordel M. Synthesis, experimental and theoretical characterization of a Mn(II) complex of N,N′-dipyridoxyl(1,2-diaminobenzene). J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.07.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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9
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Shukla A, Khan E, Srivastava K, Sinha K, Tandon P, Vangala VR. Study of molecular interactions and chemical reactivity of the nitrofurantoin–3-aminobenzoic acid cocrystal using quantum chemical and spectroscopic (IR, Raman, 13C SS-NMR) approaches. CrystEngComm 2017. [DOI: 10.1039/c7ce00864c] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inquiries of structural reactivity, molecular interactions and vibrational characterization of drugs are essential in understanding their behaviour.
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Affiliation(s)
- Anuradha Shukla
- Department of Physics
- University of Lucknow
- Lucknow 226007
- India
| | - Eram Khan
- Department of Physics
- University of Lucknow
- Lucknow 226007
- India
| | | | - Kirti Sinha
- Department of Physics
- University of Lucknow
- Lucknow 226007
- India
| | - Poonam Tandon
- Department of Physics
- University of Lucknow
- Lucknow 226007
- India
| | - Venu R. Vangala
- Centre for Pharmaceutical Engineering Science
- School of Pharmacy and Medical Sciences
- University of Bradford
- Bradford BD7 1DP
- UK
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10
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Synthesis, experimental and theoretical studies of two cocrystals in 1:1 stoichiometric ratio from 4,4′-bithiazole-2,2′-diamine with two hydrogen acceptor molecules. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0972-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Rajaei I, Mirsattari SN. Synthesis and spectroscopic properties of a copper(II) binuclear complex of a novel tetradentate asymmetrical Schiff base ligand and its DFT study. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.10.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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An experimental and theoretical study of a hydrogen-bonded complex: O-phenylenediamine with 2,6-pyridinedicarboxylic acid. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.07.077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Eshtiagh-Hosseini H, Beyramabadi SA, Mirzaei M, Morsali A, Naseri MA, Chegini H, Elahi M. Intramolecular-proton transfer, experimental and theoretical characterization of 3,3′-dihydroxy-4,4′-[4,4′-diphenylmethanebis (nitrilomethylidyne)]-bis-phenol. J STRUCT CHEM+ 2015. [DOI: 10.1134/s0022476615050054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Stoler E, Warner JC. Non-Covalent Derivatives: Cocrystals and Eutectics. Molecules 2015; 20:14833-48. [PMID: 26287141 PMCID: PMC6332263 DOI: 10.3390/molecules200814833] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 08/05/2015] [Indexed: 12/31/2022] Open
Abstract
Non-covalent derivatives (NCDs) are formed by incorporating one (or more) coformer molecule(s) into the matrix of a parent molecule via non-covalent forces. These forces can include ionic forces, Van der Waals forces, hydrogen bonding, lipophilic-lipophilic interactions and pi-pi interactions. NCDs, in both cocrystal and eutectic forms, possess properties that are unique to their supramolecular matrix. These properties include critical product performance factors such as solubility, stability and bioavailability. NCDs have been used to tailor materials for a variety of applications and have the potential to be used in an even broader range of materials and processes. NCDs can be prepared using little or no solvent and none of the reagents typical to synthetic modifications. Thus, NCDs represent a powerfully versatile, environmentally-friendly and cost-effective opportunity.
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Affiliation(s)
- Emily Stoler
- The Warner Babcock Institute for Green Chemistry, 100 Research Drive, Wilmington, MA 01887, USA.
| | - John C Warner
- The Warner Babcock Institute for Green Chemistry, 100 Research Drive, Wilmington, MA 01887, USA.
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15
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Ghasemi K, Rezvani AR, Shokrollahi A, Zarghampour F, Moghimi A, García-Granda S, Mendoza-Meroño R. Synthesis, characterization, crystal structure and solution studies of a novel proton transfer (charge transfer) complex of 2,2′-dipyridylamine with 2,6-pyridine dicarboxylic acid. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.02.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Beyramabadi SA, Eshtiagh-Hosseini H, Housaindokht MR, Shirzadi S, Morsali A, Naseri MA. Experimental and theoretical characterization of N,N′-bis(2,4-dihydroxybenzylidene)-1,2-diaminobenzene schiff base and its Cu(II) complex. J STRUCT CHEM+ 2014. [DOI: 10.1134/s0022476613060085] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Eshtiagh-Hosseini H, Beyramabadi SA, Mirzaei M, Morsali A, Salimi AR, Naseri MA. 3,3′-dihydroxy-4,4′-[1,2-cyclohexanediyl-bis(nitrilomethylidyne)]-bis-phenol schiff-base and its Mn(II) complex: Synthesis, experimental, and theoretical characterization. J STRUCT CHEM+ 2014. [DOI: 10.1134/s0022476613060097] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Mirzaei M, Eshtiagh-Hosseini H, Bauzá A, Zarghami S, Ballester P, Mague JT, Frontera A. On the importance of non covalent interactions in the structure of coordination Cu(ii) and Co(ii) complexes of pyrazine- and pyridine-dicarboxylic acid derivatives: experimental and theoretical views. CrystEngComm 2014. [DOI: 10.1039/c4ce00003j] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We synthesized and X-ray characterized four complexes based on pyrazine- and pyridine-dicarboxylic acid ligands. One of them exhibited a relevant lp–π-hole interaction.
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Affiliation(s)
- Masoud Mirzaei
- Department of Chemistry
- Ferdowsi University of Mashhad
- Mashhad 917751436, Iran
| | | | - Antonio Bauzá
- Departament de Quimica
- Universitat de les Illes Balears
- Palma de Mallorca (Baleares), Spain
| | - Sara Zarghami
- Department of Chemistry
- Ferdowsi University of Mashhad
- Mashhad 917751436, Iran
| | - Pablo Ballester
- Institute of Chemical Research of Catalonia (ICIQ)
- 43007 Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA) Passeig Lluís Companys
- Barcelona, Spain
| | - Joel T. Mague
- Department of Chemistry
- Tulane University Orleans
- , USA
| | - Antonio Frontera
- Departament de Quimica
- Universitat de les Illes Balears
- Palma de Mallorca (Baleares), Spain
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19
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Şen İ, Yildiz CB, Kara H, Azizoglu A. Experimental and Computational Studies on the 1:1 Complex of Anthranilic Acid with P-Toluenesulfonic Acid. PHOSPHORUS SULFUR 2013. [DOI: 10.1080/10426507.2013.777724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- İbrahim Şen
- a Department of Chemistry, Faculty of Arts and Sciences , University of Balikesir , Balikesir , Turkey
| | - Cem Burak Yildiz
- a Department of Chemistry, Faculty of Arts and Sciences , University of Balikesir , Balikesir , Turkey
- b Department of Chemistry, Faculty of Arts and Sciences , University of Aksaray , Aksaray , Turkey
| | - Hulya Kara
- c Department of Physics, Faculty of Arts and Sciences , University of Balikesir , Balikesir , Turkey
| | - Akın Azizoglu
- a Department of Chemistry, Faculty of Arts and Sciences , University of Balikesir , Balikesir , Turkey
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20
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Beyramabadi SA, Morsali A, Khoshkholgh MJ, Esmaeili AA. N,N'-dipyridoxyl Schiff bases: synthesis, experimental and theoretical characterization. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 83:467-471. [PMID: 21943715 DOI: 10.1016/j.saa.2011.08.067] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 08/13/2011] [Accepted: 08/29/2011] [Indexed: 05/31/2023]
Abstract
Three N,N'-dipyridoxyl Schiff bases (L1, L2 and L3) have been newly synthesized and characterized by IR, (1)H NMR, mass spectrometry and elemental analysis. Their optimized geometries together with the theoretical assignment of the vibrational frequencies and the (1)H NMR chemical shifts of them have been computed by using density functional theory (DFT) method. In the optimized structures of the Schiff bases, two pyridine rings are not in a same plane; however the substitutions are essentially in the same plane with the pyridine rings. Also, the benzene ring(s) in the bridge region is (are) not in the same plane with the pyridine rings and azomethine moieties. In all the species, engagement in intramolecular-hydrogen bonds causes to weakness of the phenolic O-H bonds. Consistency between the theoretical results and experimental evidence confirms suitability of the optimized geometries for the synthesized Schiff bases.
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Affiliation(s)
- S Ali Beyramabadi
- Department of Chemistry, Mashhad Branch, Islamic Azad University, Mashhad, Iran.
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21
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Mirzaei M, Eshtiagh-Hosseini H, Alfi N, Aghabozorg H, Gharamaleki JA, Beyramabadi SA, Khavasi HR, Salimi AR, Shokrollahi A, Aghaei R, Karami E. Syntheses, crystal, molecular structures, and solution studies of Cu(II), Co(II), and Zn(II) coordination compounds containing pyridine-2,6-dicarboxylic acid and 1,4-pyrazine-2,3-dicarboxylic acid: comparative computational studies of Cu(II) and Zn(II) complexes. Struct Chem 2011. [DOI: 10.1007/s11224-011-9829-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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