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Emori W, Ogunwale GJ, Louis H, Agwamba EC, Wei K, Unimuke TO, Cheng CR, Ejiofor EU, Asogwa FC, Adeyinka AS. Spectroscopic (UV–vis, FT-IR, FT-Raman, and NMR) analysis, structural benchmarking, molecular properties, and the in-silico cerebral anti-ischemic activity of 2-amino-6-ethoxybenzothiazole. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133318] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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2
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Khanjari Z, Mohtat B, Ghiasi R, Djahaniani H, Behbahani FK. Solvent and temperature effects on the tautomerization of a carbonitrile molecule: A conductor-like polarizable continuum model (CPCM) study. MAIN GROUP CHEMISTRY 2021. [DOI: 10.3233/mgc-210016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This research examined the effects of solvent polarity and temperature on the tautomerization of a carbonitrile molecule at CAM-B3LYP/6-311G (d,p) level of theory. The selected solvents were n-hexane, diethyl ether, pyridine, ethanol, methanol, and water. The solvent effects were examined by the self-consistent reaction field theory (SCRF) based on conductor-like polarizable continuum model (CPCM). The solvent effects were explored on the energy barrier, frontier orbitals energies, and HOMO-LUMO gap. Dependencies of thermodynamic parameters (ΔG and ΔH) on the dielectric constants of solvents were also tested. Specifically, the temperature dependencies of the thermodynamics parameters were studied within 100–1000 K range. The rate constant of the tautomerism reaction was computed from 300 to 1200 K, in the gas phase.
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Affiliation(s)
- Zohreh Khanjari
- Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Bita Mohtat
- Department of Chemistry, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Reza Ghiasi
- Department of Chemistry, East Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Hoorieh Djahaniani
- Department of Chemistry, East Tehran Branch, Islamic Azad University, Tehran, Iran
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Structure, electronic properties and slippage of cyclopentadienyl and indenyl ligands in the (η5-C5H5) (η3-C5H5) W(CO)2 and (η5-C9H7) (η3-C9H7)W(CO)2 complexes: A C-PCM investigation. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Unveiling the influence of solvent polarity on structural, electronic properties, and 31P NMR parameters of rhenabenzyne complex. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Ghiasi R, Emami R, Sofiyani MV. Cyclometalation in the (η3-C5H5)Co(η2-C2H2)(PMe3) and (η3-C9H7)Co(η2-C2H2) (PMe3) complexes: A computational investigation. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115097] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Vakulin IV, Latipova ER, Rafikova AA, Belkina NV, Yakupov IS, Talipov RF, Ishmuratov GU. Quantum chemical investigation of structure and stability conformers (
R
)‐4‐menthen‐3‐one. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ivan V. Vakulin
- Department of Organic and Bioorganic Chemistry Bashkir State University Ufa, Republic of Bashkortostan Russia
| | - Elvira R. Latipova
- Department of Organic and Bioorganic Chemistry Bashkir State University Ufa, Republic of Bashkortostan Russia
| | - Anna A. Rafikova
- Department of Organic and Bioorganic Chemistry Bashkir State University Ufa, Republic of Bashkortostan Russia
| | - Nadegda V. Belkina
- Department of Organic and Bioorganic Chemistry Bashkir State University Ufa, Republic of Bashkortostan Russia
| | - Iskander Sh. Yakupov
- Department of Organic and Bioorganic Chemistry Bashkir State University Ufa, Republic of Bashkortostan Russia
| | - Rifkat F. Talipov
- Department of Organic and Bioorganic Chemistry Bashkir State University Ufa, Republic of Bashkortostan Russia
| | - Gumer U. Ishmuratov
- Ufa Institute of Chemistry Russian Academy of Sciences Ufa, Republic of Bashkortostan Russia
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Ghane Shalmani G, Ghiasi R, Marjani A. Substituent effects on the structure and properties of (para-C5H4X)Ir(PH3)3 complexes in the ground state (S0) and first singlet excited state (S1): DFT and TD-DFT investigations. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820942864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The ground and lowest singlet excited state geometries of selected ( para-C5H4X)Ir(PH3)3 iridabenzene complexes ( para-substituent = NH2, OMe, Me, H, F, Cl, CCl3, CF3, NO2) are optimized using the MPW1PW91 procedure employing the LanL2DZ(Ir) and 6-311G(d, p) (C, H, N, O, P, F, Cl, P) basis sets. The excited state is generated using the time-dependent density function method. The effects of electron-donating groups and electron-withdrawing groups on the energy, atomization energy, rotational constants, and frontier orbital energies in the first singlet excited state (S1) of iridabenzene are investigated and compared to those of the ground state (S0). The Ir–C and Ir–P bonds in the studied molecules are analyzed by electron localization function and localized-orbital locator methods. The correlations between the Ir-C and Ir–P bond distances, electron localization function, and localized-orbital locator values Hammett constants (σp) and dual parameters (σI and σR) are given for the two studied states. The para-delocalization index is used for investigation of the aromaticity of the studied complexes.
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Affiliation(s)
| | - Reza Ghiasi
- Department of Chemistry, Faculty of Science, East Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Azam Marjani
- Department of Chemistry, Faculty of Science, Arak Branch, Islamic Azad University, Arak, Iran
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