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Experimental spectra, electronic properties (liquid and gaseous phases) and activity against SARS-CoV-2 main protease of Fluphenazine dihydrochloride: DFT and MD simulations. J Mol Struct 2022; 1267:133633. [PMID: 35791370 PMCID: PMC9244788 DOI: 10.1016/j.molstruc.2022.133633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/23/2022] [Accepted: 06/29/2022] [Indexed: 11/21/2022]
Abstract
The Gaussian 09 DFT tool is used to investigate the formational electronic behaviour, reactivity analysis and biological properties of fluphenazine dihydrochloride (FDD). The quantum computation is used to determine the spectroscopic and vibrational assignments of FDD. The NBO method explains charge transfer and molecular interactions. Energy gap values are determined using FMO analysis in different solvents and toluene is a better solvent due to higher value of solvation energy. The UV-visible spectra are investigated in various solvents using the TD-DFT method. Electrostatic potential, the wave function related properties such as LOL, NCI and RDG are determined in gaseous phase. Furthermore, the drug likeness is analyzed. At last, a docking study with MD simulation is used to investigate FDD's antiviral activity against SARS-CoV-2 main protease.
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Molecular, Electronic, Nonlinear Optical and Spectroscopic Analysis of Heterocyclic 3-Substituted-4-(3-methyl-2-thienylmethyleneamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones: Experiment and DFT Calculations. HETEROCYCL COMMUN 2021. [DOI: 10.1515/hc-2020-0118] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
In the present study, 3-p-methoxybenzyl/m-chlorobenzyl/phenyl-4-(3-methyl-2-thienylmethyleneamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones were obtained from the reaction between 3-methylthiophene-2-carbaldehyde and three different 4-amino-(3-p-methoxybenzyl/m-chlorobenzyl/phenyl)-4,5-dihydro-1H-1,2,4-triazole-5-ones. In order to compare experimental and theoretical values, the geometric parameter, electronic, nonlinear optical properties, molecular electrostatic potentials and spectroscopic properties of 3-substituted-4-(3-methyl-2-thienylmethyleneamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones have been simulated. The electronic properties of the newly synthesized compounds were calculated using DFT/B3LYP and DFT/B3PW91 methods revealing parameters such as ionization potential, electron affinity, energy gap, electronegativity, molecular hardness, molecular softness, electrophilic index, nucleophilic index and chemical potential, all obtained from HOMO and LUMO energies, dipole moments and total energies. UV-visible absorption spectra and the stimulation contributions in UV-visible transitions were obtained by using TD-DFT/B3LYP/6-311G(d,p) and TD-DFT/B3PW91/6-311G(d,p) methods in ethanol. The calculated absorption wavelengths, oscillator power and excitation energies were compared with experimental values. In line with DFT, the numbers of molecular vibration were analyzed through the basis set of 6-311G(d,p). The recording of FT-IR frequencies was done for the pertinent compound. The recorded frequencies through DFT/B3LYP and DFT/B3PW91 methods were compared to experimental values, with a result gained closest to the values of B3LYP. Finally, the Gaussian09W program package in DMSO phase, starting from the optimized structure, has been instrumental in calculating the 13C-NMR and 1H-NMR chemical shift values of the GIAO method.
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3
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Venil K, Lakshmi A, Balachandran V, Narayana B, Salian VV. FT-IR and FT-Raman investigation, quantum chemical analysis and molecular docking studies of 5-(4-Propan-2-yl)benzylidene)-2-[3-(4-chlorophenyl)-5[4-(propan-2-yl)phenyl-4,5-dihydro-1H-pyrazol-1-yl]-1,3-thiazol-4(5H)-one. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129070] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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4
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Jayasudha J, Balachandran V, Narayana B. Molecular Docking, Spectroscopic, and Computational Studies of 2-{3-(4-Chlorophenyl)-5-[4-(Propan-2-yl) Phenyl]-4, 5-Dihydro-1H-Pyrazol-1-yl}-1, 3-Thiazol-4(5H)-One. Polycycl Aromat Compd 2020. [DOI: 10.1080/10406638.2020.1830810] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- J. Jayasudha
- Centre for Research – Department of Physics, Arignar Anna Government Arts College, Musiri (Affiliated by Bharathidasan University), Tiruchirappalli, Tamil Nadu, India
| | - V. Balachandran
- Centre for Research – Department of Physics, Arignar Anna Government Arts College, Musiri (Affiliated by Bharathidasan University), Tiruchirappalli, Tamil Nadu, India
| | - B. Narayana
- Deparment of Chemistry, Mangalore University, Mangalagangoti, India
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5
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Sheena Mary Y, Shyma Mary Y, Thomas R, Resmi KS, Narayana B, Samshuddin S, Sarojini BK. Spectroscopic and Theoretical Studies of Potential Anti-Inflammatory Polycyclic Aromatic Fluorophenyl Substituted Acyclic and Heterocyclic Analogues Synthesized from 4,4′-Difluorophenylchalcone. Polycycl Aromat Compd 2019. [DOI: 10.1080/10406638.2019.1699836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Y. Sheena Mary
- Department of Physics, Fatima Mata National College (Autonomous), Kollam, India
| | - Y. Shyma Mary
- Department of Physics, Fatima Mata National College (Autonomous), Kollam, India
| | - Renjith Thomas
- Department of Chemistry, St. Berchmans College (Autonomous), Changanassery, India
| | - K. S. Resmi
- Department of Physics, Fatima Mata National College (Autonomous), Kollam, India
| | - B. Narayana
- Department of Chemistry, Mangalore University, Mangalagangothri, India
| | - S. Samshuddin
- Department of Chemistry, Mangalore University, Mangalagangothri, India
| | - B. K. Sarojini
- Department of Industrial Chemistry, Mangalore University, Mangalagangothri, India
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6
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Kaur M, Kaur H, Kapila A, Reenu. Tautomerism, spectroscopic and computational analysis of Schiff base and its diphenyltin (IV) complex. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.077] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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7
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Synthesis, structural characterization, and theoretical studies of new pyrazole (E)-2-{[(5-(tert-butyl)-1H-pyrazol-3-yl)imino]methyl}phenol and (E)-2-{[(1-(4-bromophenyl)-3-(tert-butyl)-1H-pyrazol-5-yl]imino]methyl}phenol. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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8
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Sert Y, Gökce H, Chandra, Mahendra M, Srikantamurthy N, Çırak Ç. Molecular docking and vibrational spectroscopy studies of (E)-N′-hydroxy-1,3-diphenyl-4,5-dihydro-1H-pyrazole-5-carboximidamide. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Helda Malarkodi J, Murugavel S, Rosaline Ezhilarasi J, Dinesh M, Ponnuswamy A. Structure investigation, spectral characterization, electronic properties, and antimicrobial and molecular docking studies of 3′-(1-benzyl-5-methyl-1 H
-1,2,3-triazole-4-carbonyl)-1′-methyl-4′-phenyl-2 H
-spiro[acenaphthylene-1,2′-pyrrolidine]-2-one. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Saminathan Murugavel
- Department of Physics; Thanthai Periyar Government Institute of Technology; Vellore Tamil Nadu India
| | | | - Murugan Dinesh
- Department of Organic Chemistry, School of Chemistry; Madurai Kamaraj University; Madurai Tamil Nadu India
| | - Alagusundaram Ponnuswamy
- Department of Organic Chemistry, School of Chemistry; Madurai Kamaraj University; Madurai Tamil Nadu India
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Gümüş M, Sert Y, Özdemir Ş, Gökce H, Kani İ, Koca İ. Spectroscopic (FT-IR, Laser-Raman and NMR) and conformational analysis on novel pyrazole β-keto ester compound. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.05.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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11
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Murugavel S, Sundramoorthy S, Subashini R, Pavan P. Synthesis, characterization, pharmacological, molecular modeling and antimicrobial activity evaluation of novel isomer quinoline derivatives. Struct Chem 2018. [DOI: 10.1007/s11224-018-1149-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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12
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Cuenú F, Londoño-Salazar J, Torres JE, Abonia R, D'Vries RF. Synthesis, structural characterization and theoretical studies of a new Schiff base 4-(((3-(tert-Butyl)-(1-phenyl)pyrazol-5-yl) imino)methyl)phenol. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Mary YS, Al-Omary FA, Mostafa GA, El-Emam AA, Manjula P, Sarojini B, Narayana B, Armaković S, Armaković SJ, Van Alsenoy C. Insight into the reactive properties of newly synthesized 1,2,4-triazole derivative by combined experimental (FT-IR and FR-Raman) and theoretical (DFT and MD) study. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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14
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Chen T, Tang P, Feng Y, Li D. Facile Color Tuning, Characterization, and Application of Acid Green 25 and Acid Yellow 25 Co-intercalated Layered Double Hydroxides. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00279] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tingwei Chen
- State
Key Laboratory of Chemical Resource Engineering, and ‡Beijing Engineering
Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Pinggui Tang
- State
Key Laboratory of Chemical Resource Engineering, and ‡Beijing Engineering
Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yongjun Feng
- State
Key Laboratory of Chemical Resource Engineering, and ‡Beijing Engineering
Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Dianqing Li
- State
Key Laboratory of Chemical Resource Engineering, and ‡Beijing Engineering
Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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Murugavel S, Sundramoorthy S, Lakshmanan D, Subashini R, Pavan Kumar P. Synthesis, crystal structure analysis, spectral (NMR, FT-IR, FT-Raman and UV–Vis) investigations, molecular docking studies, antimicrobial studies and quantum chemical calculations of a novel 4-chloro-8-methoxyquinoline-2(1H)-one: An effective antimicrobial agent and an inhibition of DNA gyrase and lanosterol-14α-demethylase enzymes. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.11.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Murugavel S, Vetri velan V, Kannan D, Bakthadoss M. Synthesis of a novel methyl(2E)-2-{[N-(2-formylphenyl)(4-methylbenzene) sulfonamido]methyl}-3-(2-methoxyphenyl)prop-2-enoate: Molecular structure, spectral, antimicrobial, molecular docking and DFT computational approaches. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.08.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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17
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Murugavel S, Vetri velan V, Kannan D, Bakthadoss M. Experimental and computational approaches of a novel methyl (2E)-2-{[N-(2-formylphenyl)(4-methylbenzene)sulfonamido]methyl}-3-(4-chlorophenyl)prop-2-enoate: A potential antimicrobial agent and an inhibition of penicillin-binding protein. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.084] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Parveen S S, Al-Alshaikh MA, Panicker CY, El-Emam AA, Narayana B, Saliyan VV, Sarojini B, Van Alsenoy C. Vibrational and structural observations and molecular docking study on 1-{3-(4-chlorophenyl)-5-[4-(propan-2-yl)phenyl]-4,5-dihydro-1H-pyrazol-1-yl}-ethanone. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Murugavel S, Vetri Velan V, Kannan D, Bakthadoss M. Synthesis, crystal structure analysis, spectral investigations, DFT computations, Biological activities and molecular docking of methyl(2E)-2-{[N-(2-formylphenyl)(4-methylbenzene) sulfonamido]methyl}-3-(4-fluorophenyl)prop-2-enoate, a potential bioactive agent. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.11.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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20
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Panicker CY, Varghese HT, Manjula PS, Sarojini BK, Narayana B, War JA, Srivastava SK, Van Alsenoy C, Al-Saadi AA. FT-IR, HOMO-LUMO, NBO, MEP analysis and molecular docking study of 3-Methyl-4-{(E)-[4-(methylsulfanyl)-benzylidene]amino}1H-1,2,4-triazole-5(4H)-thione. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:198-207. [PMID: 26142174 DOI: 10.1016/j.saa.2015.06.076] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 06/21/2015] [Accepted: 06/22/2015] [Indexed: 06/04/2023]
Abstract
FT-IR spectrum of 3-Methyl-4-{(E)-[4-(methylsulfanyl)-benzylidene]amino}1H-1,2,4-triazole-5(4H)-thione was recorded and analysed. The vibrational wavenumbers were computed and at HF and DFT levels of theory. The data obtained from wavenumber calculations are used to assign the vibrational bands obtained in the IR spectrum. The NH stretching wavenumber is red shifted in the IR spectrum from the computed value, which indicates the weakening of the NH bond. The geometrical parameters of the title compound are in agreement with the XRD results. NBO analysis, HOMO-LUMO, first and second order hyperpolarizability and molecular electrostatic potential results are also reported. From the MEP map it is evident that the negative regions are localized over the sulphur atoms and N3 atom of triazole ring and the maximum positive region is localized on NH group, indicating a possible site for nucleophilic attack. Prediction of Activity Spectra analysis of the title compound predicts anti-tuberculostic activity with probability to be active value of 0.543. Molecular docking studies reveal that the triazole nitrogen atoms and the thione sulphur atom play vital role in bonding and results draw us to the conclusion that the compound might exhibit anti-tuberculostic activity.
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Affiliation(s)
- C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | | | - P S Manjula
- Department of Chemistry, P.A. College of Engineering, Nadupadavu, D.K., Mangalore, Karnataka, India
| | - B K Sarojini
- Industrial Chemistry-Division, Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
| | - B Narayana
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karanataka, India
| | - Javeed Ahamad War
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P., India
| | - S K Srivastava
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P., India
| | - C Van Alsenoy
- University of Antwerp, Chemistry Department, Universiteitsplein 1, B2610 Antwerp, Belgium
| | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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21
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Mary YS, Panicker CY, Sapnakumari M, Narayana B, Sarojini BK, Al-Saadi AA, Van Alsenoy C, War JA, Fun HK. Infrared spectrum, structural and optical properties and molecular docking study of 3-(4-fluorophenyl)-5-phenyl-4,5-dihydro-1H-pyrazole-1-carbaldehyde. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 138:529-538. [PMID: 25528512 DOI: 10.1016/j.saa.2014.11.041] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 10/19/2014] [Accepted: 11/20/2014] [Indexed: 06/04/2023]
Abstract
The optimized molecular structure, vibrational frequencies, corresponding vibrational assignments of 3-(4-fluorophenyl)-5-phenyl-4,5-dihydro-1H-pyrazole-1-carbaldehyde have been investigated experimentally and theoretically. The title compound was optimized using at HF and DFT levels of calculations. The B3LYP/6-311++G(d,p) (5D,7F) results and in agreement with experimental infrared bands. The normal modes are assigned using potential energy distribution. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using natural bonding orbital analysis. The frontier molecular orbital analysis is used to determine the charge transfer within the molecule. From molecular electrostatic potential map, it is evident that the negative electrostatic potential regions are mainly localized over the carbonyl group and mono substituted phenyl ring and are possible sites for electrophilic attack and, positive regions are localized around all para substituted phenyl and pyrazole ring, indicating possible sites for nucleophilic attack. First hyperpolarizability is calculated in order to find its role in nonlinear optics. The geometrical parameters are in agreement with experimental data. From the molecular docking studies, it is evident that the fluorine atom attached to phenyl ring and the carbonyl group attached to pyrazole ring are crucial for binding and the results draw us to the conclusion that the compound might exhibit phosphodiesterase inhibitory activity.
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Affiliation(s)
- Y Sheena Mary
- Department of Physics, Fatima Mata National College, Kollam, Kerala, India
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | - M Sapnakumari
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
| | - B Narayana
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
| | - B K Sarojini
- Industrial Chemistry-Division, Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
| | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - C Van Alsenoy
- Department of Chemistry, University of Antwerp, B2610 Antwerp, Belgium
| | - Javeed Ahmad War
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P. 470003, India
| | - H K Fun
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, Penang 11800, Malaysia; Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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22
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Sheena Mary Y, Yohannan Panicker C, Sapnakumari M, Narayana B, Sarojini BK, Al-Saadi AA, Van Alsenoy C, War JA. Molecular structure, FT-IR, vibrational assignments, HOMO-LUMO, MEP, NBO analysis and molecular docking study of ethyl-6-(4-chlorophenyl)-4-(4-fluorophenyl)-2-oxocyclohex-3-ene-1-carboxylate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 138:73-84. [PMID: 25463053 DOI: 10.1016/j.saa.2014.11.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 10/26/2014] [Accepted: 11/05/2014] [Indexed: 06/04/2023]
Abstract
The optimized molecular structure, vibrational frequencies, corresponding vibrational assignments of ethyl-6-(4-chlorophenyl)-4-(4-fluoro-phenyl)-2-oxocyclohex-3-ene-1-carboxylate have been investigated experimentally and theoretically using Gaussian09 software. The title compound was optimized using the HF and DFT levels of theory. The geometrical parameters are in agreement with the XRD data. The stability of the molecule has been analyzed by NBO analysis. The HOMO and LUMO analysis is used to determine the charge transfer within the molecule. Molecular electrostatic potential was performed by the DFT method. As can be seen from the MEP map of the title compound, regions having the negative potential are over the electro negative atoms, the region having the positive potential are over the phenyl rings and the remaining species are surrounded by zero potential. First hyperpolarizability is calculated in order to find its role in non linear optics. The title compound binds at the active sites of both CypD and β-secretase and the molecular docking results draw the conclusion that the compound might exhibit β-secretase inhibitory activity which could be utilized for development of new anti-alzheimeric drugs with mild CypD inhibitory activity.
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Affiliation(s)
- Y Sheena Mary
- Department of Physics, Fatima Mata National College, Kollam, Kerala, India
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | - M Sapnakumari
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karanataka, India
| | - B Narayana
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karanataka, India
| | - B K Sarojini
- Industrial Chemistry-Division, Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karanataka, India
| | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | | | - Javeed Ahmad War
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P., India
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23
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Mary YS, Panicker CY, Sapnakumari M, Narayana B, Sarojini BK, Al-Saadi AA, Van Alsenoy C, War JA. FT-IR, NBO, HOMO-LUMO, MEP analysis and molecular docking study of 1-[3-(4-Fluorophenyl)-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl]ethanone. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:483-493. [PMID: 25448949 DOI: 10.1016/j.saa.2014.09.061] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 09/11/2014] [Accepted: 09/18/2014] [Indexed: 06/04/2023]
Abstract
The optimized molecular structure, vibrational frequencies, corresponding vibrational assignments of 1-[3-(4-fluorophenyl)-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl]ethanone have been investigated experimentally and theoretically. The geometrical parameters are in agreement with XRD data. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. The HOMO and LUMO analysis is used to determine the charge transfer within the molecule. From the MEP it is evident that the negative charge covers the carbonyl group and the positive region is over the remaining groups. The more electronegativity in the carbonyl group makes it the most reactive part in the molecule. First hyperpolarizability is calculated in order to find its role in nonlinear optics. From the molecular docking studies, it is evident that the fluorine atom attached to benzene ring and ethanone attached to the pyrazoline ring are crucial for binding and the compound might exhibit inhibitory activity against TPII and may act as anti-neoplastic agent.
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Affiliation(s)
- Y Sheena Mary
- Department of Physics, Fatima Mata National College, Kollam, Kerala, India
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | - M Sapnakumari
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
| | - B Narayana
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
| | - B K Sarojini
- Industrial Chemistry Division, Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
| | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | | | - Javeed Ahmad War
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, M.P., India
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Mary YS, Panicker CY, Sapnakumari M, Narayana B, Sarojini BK, Al-Saadi AA, Van Alsenoy C, War JA, Fun HK. Molecular structure, FT-IR, vibrational assignments, HOMO-LUMO analysis and molecular docking study of 1-[5-(4-Bromophenyl)-3-(4-fluorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]ethanone. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:473-482. [PMID: 25448948 DOI: 10.1016/j.saa.2014.09.060] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 09/11/2014] [Accepted: 09/18/2014] [Indexed: 06/04/2023]
Abstract
The optimized molecular structure, vibrational frequencies, corresponding vibrational assignments of 1-[5-(4-bromophenyl)-3-(4-fluorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]ethanone have been investigated experimentally and theoretically using Gaussian09 software package. The title compound was optimized using the HF/6-31G(d) (6D, 7F), B3LYP/6-31G (6D, 7F) and B3LYP/6-311++G(d,p) (5D, 7F) calculations. The B3LYP/6-311++G(d,p) (5D, 7F) results and in agreement with experimental infrared bands. The geometrical parameters are in agreement with XRD data. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. The HOMO and LUMO analysis is used to determine the charge transfer within the molecule. Molecular electrostatic potential was also performed. From the MEP it is evident that the negative charge covers the C=O group and the positive region is over the rings. First hyperpolarizability is calculated in order to find its role in nonlinear optics. Molecular docking studies suggest that the compound might exhibit inhibitory activity against TPII and may act as anti-neoplastic agent.
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Affiliation(s)
- Y Sheena Mary
- Department of Physics, Fatima Mata National College, Kollam, Kerala, India
| | - C Yohannan Panicker
- Department of Physics, TKM College of Arts and Science, Kollam, Kerala, India.
| | - M Sapnakumari
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
| | - B Narayana
- Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
| | - B K Sarojini
- Industrial Chemistry Division, Department of Studies in Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
| | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | | | - Javeed Ahmad War
- Department of Chemistry, Dr. H.S. Gour Central University, Sagar, MP, India
| | - H K Fun
- X-Ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, Penang 11800, Malaysia; Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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Structural Preferences and Vibrational Analysis of 2-Hydroxy-2-methyl-1-phenylpropan-1-one: A Computational and Infrared Spectroscopic Research. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/942302] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The Fourier transform infrared (FTIR) spectrum of 2-hydroxy-2-methyl-1-phenylpropan-1-one has been measured in the region 4000–700 . The most stable conformation of title molecule was found after a careful potential energy surfaces study. The molecular geometry, vibrational frequencies, and infrared intensities have been calculated by using ab initio HF and density functional theory calculation B3LYP with 6-311+ basis set. Scaled frequencies and potential energy distribution were calculated for band assignment. We found an excellent agreement between the experimental and the simulated spectra. Energy gap between HOMO and LUMO explains the eventual charge transfer interactions taking place within the molecule.
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Sarojini K, Krishnan H, Kanakam CC, Muthu S. Synthesis, structural, spectroscopic studies, NBO analysis, NLO and HOMO-LUMO of 4-methyl-N-(3-nitrophenyl)benzene sulfonamide with experimental and theoretical approaches. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 108:159-70. [PMID: 23466326 DOI: 10.1016/j.saa.2013.01.060] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 11/29/2012] [Accepted: 01/18/2013] [Indexed: 06/01/2023]
Abstract
The sulfonamide compound, 4-methyl-N-(3-nitrophenyl)benzene sulfonamide (abbreviated as 4M3NPBS) has been synthesized and characterized by FTIR, FT-Raman NMR, single crystal X-ray diffraction and thermal analysis. Density functional (DFT) calculations have been carried out for the title compound by performing DFT level of theory using B3LYP/6-31G(d,p) basis set. The calculated results show that the predicted geometry can well reproduce the structural parameters. Predicted vibrational frequencies have been assigned and compared with the experimental IR spectra and they support each other. The UV-Vis spectrum of the compound was recorded. The theoretical electronic absorption spectra have been calculated by using CIS, TD-DFT, ZINDO methods. Stability of the molecule arising from hyper conjugative interactions, charge delocalization has been analyzed using natural bond orbital (NBO) analysis. The first order hyperpolarizability (β0) of 4M3NPBS was calculated using B3LYP/6-31G(d,p) method on the basis of finite-field approach. In addition, frontier molecular orbitals and molecular electrostatic potential were carried out by using density functional theory (DFT/B3LYP) 6-31G(d,p) basis set. The calculated HOMO and LUMO energies show that charge transfer occur in the molecule. The thermal stability of the title compound was determined with the aid of thermo gravimetric analysis (TGA) and differential thermal analysis (DTA).
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Affiliation(s)
- K Sarojini
- Research and Development Centre, Bharathiyar University, Coimbatore, India
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