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Arumugam T, Ramalingam A, Guerroudj AR, Sambandam S, Boukabcha N, Chouaih A. Conformation and vibrational spectroscopic analysis of 2,6-bis(4-fluorophenyl)-3,3-dimethylpiperidin-4-one (BFDP) by DFT method: A potent anti-Parkinson's, anti-lung cancer, and anti-human infectious agent. Heliyon 2023; 9:e21315. [PMID: 37954314 PMCID: PMC10637958 DOI: 10.1016/j.heliyon.2023.e21315] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/16/2023] [Accepted: 10/19/2023] [Indexed: 11/14/2023] Open
Abstract
The potential of 2,6-bis(4-fluorophenyl)-3,3-dimethylpiperidin-4-one (BFDP) as an anti-Parkinson's, anti-lung cancer, and anti-human infectious agent was extensively assessed in the current study. To accomplish this, the compound BFDP was synthesised and analysed using several spectroscopic approaches, such as NMR, mass and FT-IR spectral studies. The computational calculations for the molecule were carried out using density functional theory (DFT) at the B3LYP/6-311G++ (d,p) level of theory. A X-ray diffraction (XRD) study allows us to analyse the crystalline structure of our BFDP molecule. Intermolecular interactions were assessed using 3D Hirshfeld surfaces (3D-HS) and 2D fingerprint plots. AIM and NCI-RDG were done using quantum calculations and the DFT technique, and topological ELF and LOL, as well as vibrational parameters, have been obtained. The thermodynamic and thermal properties of the BFDP compound were determined. To investigate the pharmacokinetic characteristics of BFDP, a molecular docking study and an in silico ADMET study were done.
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Affiliation(s)
- Thangamani Arumugam
- Department of Chemistry, Karpagam Academy of Higher Education, Coimbatore 641 021, Tamil Nadu, India
- Centre for Material Chemistry, Karpagam Academy of Higher Education, Coimbatore 641 021, Tamil Nadu, India
| | - Arulraj Ramalingam
- Department of Electrical and Computer Engineering, National University of Singapore, 117 583, Singapore
| | - Ahlam Roufieda Guerroudj
- Laboratory of Technology and Solid Properties (LTPS), Abdelhamid Ibn Badis University of Mostaganem, 27000 Mostaganem, Algeria
| | - Sivakumar Sambandam
- Research and Development Centre, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
- BPJ College of Arts and Science, Kozhai, Srimushnam, Cuddalore 608703, Tamil Nadu, India
| | - 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
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R S, Mahalakshmi S, Kumaran S, Kadaikunnan S, Abbas G, Muthu S. Structural, electronic, intermolecular interaction, reactivity, vibrational spectroscopy, charge transfer, Hirshfeld surface analysis, pharmacological and hydropathy plot on 5-Bromo nicotinic acid - Antiviral study (Hepatitis A, B, and C). Heliyon 2023; 9:e19965. [PMID: 37809934 PMCID: PMC10559560 DOI: 10.1016/j.heliyon.2023.e19965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/22/2023] [Accepted: 09/07/2023] [Indexed: 10/10/2023] Open
Abstract
The therapeutic properties of 5-Bromonicotinatic acid (5BNA) were studied for antiviral illnesses like Hepatitis A, Hepatitis B and Hepatitis C and the influence of electron-donating and electron-withdrawing properties of functional groups on the nicotinic acid was evaluated and represented in this study using the DFT approach. The molecular parameters were determined for both gases as well as for various solvent phases. The reactive areas in the compound are examined utilising Fukui analysis. The molecular interactions are accomplished by recognising the different types of bonding found in the compound using the AIM, ELF, LOL, RDG and IRI. Solvation investigations were demonstrated to have an influence on molecular orbital energy, ESP, UV-Vis and NLO analyses. Electron-hole, NBO and Hirshfeld investigations are used to investigate the transfer of charges and interactions inside the molecule. The method of vibrational spectroscopy (IR and Raman) is used to differentiate and identify the various types of vibrations displayed by the compound. The hydropathy plots for the proteins 2A4O, 6CWD and 2OC8 associated with Hepatitis A, Hepatitis B and Hepatitis C illustrate the disquiet and attraction of the amino acids towards the water.
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Affiliation(s)
- Sravanthi R
- Department of Physics, Ethiraj College for Women, Chennai, 600008, Tamil Nadu, India
- University of Madras, Chennai, 600005, Tamil Nadu, India
| | - S. Mahalakshmi
- Department of Physics, Ethiraj College for Women, Chennai, 600008, Tamil Nadu, India
| | - S. Kumaran
- Department of ECE, Saveetha Engineering College, Thandalam, Chennai, 602105, Tamil Nadu, India
| | - Shine Kadaikunnan
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Ghulam Abbas
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr 15, 76131, Karlsruhe, Germany
| | - S. Muthu
- Department of Physics, Arignar Anna Govt. Arts College, Cheyyar, 604407, Tamil Nadu, India
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Akman F. Effect of solvents on intra- and inter-molecular interactions of oligothiophenes. J Mol Model 2023; 29:276. [PMID: 37555864 DOI: 10.1007/s00894-023-05684-4] [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: 04/17/2023] [Accepted: 08/02/2023] [Indexed: 08/10/2023]
Abstract
CONTEXT Oligothiophenes have long been used as model compounds to understand the chemistry of polythiophenes. Herein, we have some quantum chemical calculations and intra- and inter-molecular interaction calculations of a series of oligothiophenes such as terthiophene, quintetthiophene, sevensthiophene, terthiophene-terthiophene, terthiophene-water, terthiophene-methanol, and terthiophene-chloroform performed by time-dependent density functional theory (TD-DFT), density functional theory (DFT), and Multiwfn: a multifunctional wavefunction analyzer. The UV-vis spectra, HOMO-LUMO energies, NBO analysis, MEP, molecular structures, and electronic properties were computed using DFT/TD-DFT at the level of B3LYP/6-31+ G (d,p) and described. The nature of molecular interactions between terthiophene and solvents like water, methanol, and chloroform were also investigated using non-covalent interaction index (NCI), reduced density gradient (RDG), localized orbital locator (LOL), and electron localization function (ELF) topological analyses. Besides, Fukui functions and energy of population density-of-states were computed using the same method. The calculation results show that there are some changes in the terthiophene with the addition of solvent to the medium. METHODS DFT calculations were performed using the Gaussian 09 software and GaussView 5.0 visulation program. Multiwfn software is used to calculate the reduced density gradient (RDG) scatterplots, non-covalent interactions (NCI), ELF, LOL, Fukui analysis, and energy of population density-of-states of oligothiophenes.
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Affiliation(s)
- Feride Akman
- Vocational School of Food, Agriculture and Livestock, University of Bingöl, 12000, Bingöl, Turkey.
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Subramaniyan R, Ramarajan R, Ramalingam A, Sambandam S, Petersamy A, Guerroudj AR, Boukabcha N, Chouaih A. Microwave assisted synthesis, vibrational spectra, Hirshfeld surface and interaction energy, DFT, topology, in silico ADMET and molecular docking studies of 1,2-bis(4-methoxybenzylidene)hydrazine. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.134946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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5
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Sulfamic acid/water complexes (SAA-H2O(1-8)) intermolecular hydrogen bond interactions: FTIR,X-ray, DFT and AIM analysis. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133394] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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6
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Kazachenko AS, Medimagh M, Issaoui N, Al-Dossary O, Wojcik MJ, Kazachenko AS, Miroshnokova AV, Malyar YN. Sulfamic acid/water complexes (SAA-H2O(1-8)) intermolecular hydrogen bond interactions: FTIR,X-ray, DFT and AIM analysis. J Mol Struct 2022. [DOI: https://doi.org/10.1016/j.molstruc.2022.133394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ramalingam A, Guerroudj AR, Sambandam S, Kumar A, Krishnamoorthy R, Boukabcha N, Chouaih A, Manikandan E. Synthesis, vibrational spectra, Hirshfeld surface analysis, DFT calculations, and in silico ADMET study of 3-(2-chloroethyl)-2,6-bis(4-fluorophenyl)piperidin-4-one: A potent anti-Alzheimer agent. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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8
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Rajaraman D, Anthony LA, Sundararajan G, Shanmugam M, Arunkumar A. Synthesis, NMR, anti-oxidant, anti-cancer activity, Molecular docking, DFT Calculations and in silico ADME analysis of 3′-benzoyl-4′-phenyl-5′-(piperazin-1-ylmethyl)spiro[indoline-3,2′-pyrrolidin]-2-one derivatives. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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9
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Anthony LA, Nethaji P, Sundararajan G, Rajaraman D. One-pot synthesis, Spectral, X-ray crystal structure, Hirshfeld surface and computational study on potential inhibitory action of novel 1-benzyl-2-(4-methoxynaphthalen-1-yl)-4,5-diphenyl-1H-imidazole derivatives against COVID-19 main protease (Mpro: 6WCF/6Y84). J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Khanum G, Fatima A, Siddiqui N, Agarwal D, Butcher R, Srivastava SK, Javed S. Synthesis, single crystal, characterization and computational study of 2-amino-N-cyclopropyl-5-ethyl-thiophene-3-carboxamide. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131890] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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11
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Intermolecular hydrogen bonds interactions in water clusters of ammonium sulfamate: FTIR, X-ray diffraction, AIM, DFT, RDG, ELF, NBO analysis. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117475] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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12
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Pangajavalli S, Kumar RR, Ramaswamy S. Structural, Hirshfeld, spectroscopic, quantum chemical and molecular docking studies of N'-(4-(4-Chlorophenyl)-1,3-dicyano-5,6,7,8,9,10-hexahydrobenzo[8]annulen 2-yl) N,N-dimethylformimidamide as CCR2 inhibitors. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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FT-IR and FT-Raman investigation, quantum chemical studies, molecular docking study and antimicrobial activity studies on novel bioactive drug of 1-(2,4-Dichlorobenzyl)-3-[2-(3-(4-chlorophenyl)-5-(4-(propan-2-yl)phenyl-4,5-dihydro-1H-pyrazol-1-yl]-4-oxo-4,5-dihydro-1,3-thiazol-5(4H)-ylidence]-2,3-dihydro-1H-indol-2-one. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128244] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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14
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Bahçeli S, Sarıkaya EK, Dereli Ö, Özturan FP. Spectroscopic and DFT study on molecular structure of 1-(o-tolyl)thiourea molecule. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Intermolecular hydrogen bond interactions in the thiourea/water complexes (Thio-(H 2O) n) (n = 1, …, 5): X-ray, DFT, NBO, AIM, and RDG analyses. J Mol Model 2020; 26:161. [PMID: 32472203 DOI: 10.1007/s00894-020-04423-3] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/14/2020] [Indexed: 02/06/2023]
Abstract
This study aims to experimentally and theoretically examine the nature and energy of intermolecular bond interactions between thiourea and water molecules using natural bond orbital (NBO), non-linear optical (NLO), atoms in molecules (AIM), and reduced density gradient (RDG) analyses based on the quantum chemical approach and spectroscopic analysis on X-ray and FTIR. Geometry optimizations of Thio-(H2O)1-5 complexes were carried out in the gas phase by B3LYP/6-311++G(d,p) level of density functional theory. The nature of the molecular interactions between the water and thiourea through hydrogen bonding has been investigated using RDG and AIM methods. NBO analysis shows that the Thio-(H2O)5 complex has higher stabilization energy values than the other complexes. The non-linear optical properties, such as dipole moment (μ), the polarizability (α0), and the first hyperpolarizability (βtot), and thermodynamic functions, such as entropy (S), specific heat capacity (Cv), and thermal energy (E), were calculated using the same method. It was observed that thermodynamic parameters, polarizability, and the first hyperpolarizability increased with the number of water molecules. X-ray diffraction analysis confirmed that thiourea is single crystal, and the thiourea/water complexes are crystalline in nature. Besides, the infrared spectrum shows the existence of water molecules and it is used to get details of the structure of the complex.
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Anand PS, Sethukumar A, Kumar CU, Krishnasamy K, Senthan S, Manikandan G, Prakasam BA. Synthesis, spectroscopic investigation, computational, stereochemical and biological studies of 1,3-dimethyl-2,6-diphenylpiperidin-4-one N(4′)-cyclohexylsemicarbazone: Crystal structure and Hirshfeld surface analysis. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.cdc.2019.100216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Rajaraman D, Sundararajan G, Loganath N, Krishnasamy K. Synthesis, molecular structure, DFT studies and antimicrobial activities of some novel 3-(1-(3,4-dimethoxyphenethyl)-4,5-diphenyl-1H-imidazol-2-yl)-1H-indole derivatives and its molecular docking studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.08.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Molecular structure, kinetics and mechanism of thermal decomposition, molecular electrostatic potential, thermodynamic parameters and HOMO–LUMO analysis of coumarin-containing graft copolymer. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1875-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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19
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Tao Y, Li X, Han L, Zhang W, Liu Z. Spectroscopy (FT-IR, FT-Raman), hydrogen bonding, electrostatic potential and HOMO-LUMO analysis of tioxolone based on DFT calculations. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.05.077] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Zhao Y, Yang F, Wang J, Yu P, Pan H, Wang H, Wang J. Structural dynamics of nitrosylruthenium isomeric complexes studied with steady-state and transient pump-probe infrared spectroscopies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 166:62-67. [PMID: 27209490 DOI: 10.1016/j.saa.2016.04.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 04/25/2016] [Accepted: 04/27/2016] [Indexed: 06/05/2023]
Abstract
The characteristic nitrosyl stretching (NO) in the region of 1800-1900cm(-1) was used to study the geometric and ligand effect on two nitrosylruthenium complexes, namely [Ru(OAc)(2QN)2NO] (QN=2-chloro-8-quinolinol (H2cqn) or QN=2-methyl-8-quinolinol (H2mqn)). The NO stretching frequency (νNO) was found in the following order: νcis-1 (2cqn)>νcis-2 (2cqn)>νcis-1 (2mqn)>νtrans (2mqn). The results exhibited a spectral sensitivity of the NO mode to both charge distribution and ligand arrangement, which was supported by ab initio computations and natural bond orbital (NBO) analyses. Further, the vibrational population of the vibrationally excited NO stretching mode was found to relax on the order of 7-10ps, showing less than 30% variation from one isomer to another, which were explained on the basis of NO local structures and solute-solvent interactions in these isomeric nitrosylruthenium complexes.
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Affiliation(s)
- Yan Zhao
- College of Physics & Electronics Engineering, Shanxi University, Taiyuan 030006, China; Molecular Reaction Dynamics Laboratory, Beijing National Laboratory for Molecular Sciences, Beijing 100190, China; Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Fan Yang
- Molecular Reaction Dynamics Laboratory, Beijing National Laboratory for Molecular Sciences, Beijing 100190, China; Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jianru Wang
- Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China
| | - Pengyun Yu
- Molecular Reaction Dynamics Laboratory, Beijing National Laboratory for Molecular Sciences, Beijing 100190, China; Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Huifen Pan
- Key Laboratory of Energy Conversion and Storage Materials of Shanxi Provence, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Hongfei Wang
- Key Laboratory of Energy Conversion and Storage Materials of Shanxi Provence, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China.
| | - Jianping Wang
- Molecular Reaction Dynamics Laboratory, Beijing National Laboratory for Molecular Sciences, Beijing 100190, China; Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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Tao Y, Han L, Li X, Han Y, Liu Z. Molecular structure, spectroscopy (FT-IR, FT-Raman), thermodynamic parameters, molecular electrostatic potential and HOMO-LUMO analysis of 2, 6-dichlorobenzamide. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.12.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Rajaraman D, Sundararajan G, Rajkumar R, Bharanidharan S, Krishnasamy K. Synthesis, crystal structure investigation, DFT studies and DPPH radical scavenging activity of 1-(furan-2-ylmethyl)-2,4,5-triphenyl- 1H -imidazole derivatives. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.11.084] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Rajaraman D, Sundararajan G, Kamaraj A, Saleem H, Krishnasamy K. Synthesis, computational and spectroscopic analysis on (E)-(4-(2-(benzo[d]thiazol-2-yl)hydrazono)-3-methyl-2,6-diphenylpiperidine-1-yl)(phenyl)methanone using DFT approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:480-489. [PMID: 26151437 DOI: 10.1016/j.saa.2015.06.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Revised: 06/08/2015] [Accepted: 06/12/2015] [Indexed: 06/04/2023]
Abstract
(E)-(4-(2-(benzo[d]thiazol-2-yl)hydrazono)-3-methyl-2,6-diphenylpiperidin-1-yl)(phenyl)methanone [EPHDPM] and its derivatives were synthesized and characterized by FT-IR, (1)H NMR, (13)C NMR and elemental analysis. The target compound [EPHDPM] was computed using density functional theory (DFT) method. The ground-state molecular geometry and vibrational frequencies were calculated by using B3LYP/6-31G (d,p) level of theory. The experimentally observed FT-IR and FT-Raman bands were assigned to different normal modes of the molecule. The stability and charge delocalization of the molecule were also studied by natural bond orbital (NBO) analysis. The HOMO-LUMO energies describe the charge transfer takes place within the molecule. Molecular electrostatic potential has been analyzed. The reported EPHDPM molecule used as a potential NLO material since it has high μβ0 value. Thermodynamic parameter like entropy and enthalpy are calculated and these values are increased with increasing the temperature due to the enhancement of vibrational intensities.
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Affiliation(s)
- D Rajaraman
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
| | - G Sundararajan
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
| | - A Kamaraj
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
| | - H Saleem
- Department of Physics, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
| | - K Krishnasamy
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India.
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Alcolea Palafox M, Bhat D, Goyal Y, Ahmad S, Hubert Joe I, Rastogi VK. FT-IR and FT-Raman spectra, MEP and HOMO-LUMO of 2,5-dichlorobenzonitrile: DFT study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:464-472. [PMID: 25448947 DOI: 10.1016/j.saa.2014.09.058] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 09/11/2014] [Accepted: 09/18/2014] [Indexed: 06/04/2023]
Abstract
The experimental FT-IR and FT-Raman spectra of 2,5-dichlorobenzonitrile molecule were recorded at room temperature, and the results compared with quantum chemical theoretical values using MP2 and DFT methods. Molecular geometry, vibrational wavenumbers and thermodynamic parameters were calculated. With the help of specific scaling procedures for the computed wavenumbers, the experimentally observed FTIR and FT-Raman bands were analyzed and assigned to different normal modes of the molecule. Most of the modes have wavenumbers in the expected range and the error obtained was in general very low. Several general conclusions were deduced. The NBO analysis has been done and Molecular Electrostatic Potential (MEP) has been plotted.
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Affiliation(s)
- M Alcolea Palafox
- Departamento de Química-Física I, Facultad de Ciencias Químicas, Universidad Complutense, Madrid 28040, Spain.
| | - Daisy Bhat
- R.D. Foundation Group of Institutions, NH-58, Kadrabad, Modinagar (Ghaziabad), India
| | - Yasha Goyal
- R.D. Foundation Group of Institutions, NH-58, Kadrabad, Modinagar (Ghaziabad), India
| | - Shabbir Ahmad
- Department of Physics, Aligarh Muslim University, Aligarh, India
| | - I Hubert Joe
- Department of Physics, Mar Ivanios College, Thiruvananthapuram 6959 015, Kerala, India
| | - V K Rastogi
- R.D. Foundation Group of Institutions, NH-58, Kadrabad, Modinagar (Ghaziabad), India; Indian Spectroscopy Society, KC 68/1, Old Kavinagar, Ghaziabad 201 002, India.
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25
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Deval V, Kumar A, Gupta V, Sharma A, Gupta A, Tandon P, Kunimoto KK. Molecular structure (monomeric and dimeric) and hydrogen bonds in 5-benzyl 2-thiohydantoin studied by FT-IR and FT-Raman spectroscopy and DFT calculations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 132:15-26. [PMID: 24845873 DOI: 10.1016/j.saa.2014.04.101] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Revised: 04/12/2014] [Accepted: 04/22/2014] [Indexed: 06/03/2023]
Abstract
In the present work the structural and spectral characteristics of 5-benzyl-2-thiohydantoin (5-BTH) have been studied by methods of infrared, Raman spectroscopy and quantum chemistry. Electrostatic potential surface, optimized geometry, harmonic vibrational frequencies, infrared intensities and activities of Raman scattering were calculated by density functional theory (DFT) employing B3LYP with complete relaxation in the potential energy surface using 6-311G++(d,p) basis set. Our results support the hydrogen bonding pattern proposed by reported crystalline structure. Stability of the molecule arising from hyperconjugative interactions, charge delocalization have been analyzed using natural bond orbital (NBO) analysis. The 13C nuclear magnetic resonance (NMR) chemical shifts of the molecule are calculated by the gauge independent atomic orbital (GIAO) method and compared with experimental results. UV-vis spectrum of the compound was recorded in methanol solvent. The TD-DFT calculations have been performed to explore the influence of electronic absorption spectra in the gas phase, as well as in solution environment using PCM and 6-311++G(d,p) basis set. In addition, the thermodynamic properties of the compound were calculated at different temperatures and corresponding relations between the properties and temperature were also studied.
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Affiliation(s)
- Vipin Deval
- Department of Applied Physics, Faculty of Engineering & Technology, M.J.P. Rohilkhand University, Bareilly, India
| | - Amit Kumar
- Department of Applied Physics, Faculty of Engineering & Technology, M.J.P. Rohilkhand University, Bareilly, India; Department of Physics, Lucknow University, Lucknow, India
| | - Vineet Gupta
- Department of Physics, Lucknow University, Lucknow, India
| | - Anamika Sharma
- Department of Physics, Lucknow University, Lucknow, India
| | - Archana Gupta
- Department of Applied Physics, Faculty of Engineering & Technology, M.J.P. Rohilkhand University, Bareilly, India.
| | - Poonam Tandon
- Department of Physics, Lucknow University, Lucknow, India
| | - Ko-Ki Kunimoto
- Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Japan
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Kumar A, Deval V, Tandon P, Gupta A, Deepak D'silva E. Experimental and theoretical (FT-IR, FT-Raman, UV-vis, NMR) spectroscopic analysis and first order hyperpolarizability studies of non-linear optical material: (2E)-3-[4-(methylsulfanyl) phenyl]-1-(4-nitrophenyl) prop-2-en-1-one using density functional theory. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 130:41-53. [PMID: 24762572 DOI: 10.1016/j.saa.2014.03.072] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 03/01/2014] [Accepted: 03/21/2014] [Indexed: 06/03/2023]
Abstract
A combined experimental and theoretical investigation on FT-IR, FT-Raman, NMR, UV-vis spectra of a chalcone derivative (2E)-3-[4-(methylsulfanyl) phenyl]-1-(4-nitrophenyl) prop-2-en-1-one (4N4MSP) has been reported. 4N4MSP has two planar rings connected through conjugated double bond and it provides a necessary configuration to show non-linear optical (NLO) response. The molecular structure, fundamental vibrational frequencies and intensity of the vibrational bands are interpreted with the aid of structure optimizations and normal coordinate force field calculations based on density functional theory (DFT) with B3LYP functional and 6-311++G(d,p) basis set combination. The analysis of the fundamental modes was made with the help of potential energy distribution (PED). Molecular electrostatic potential (MEP) surface was plotted over the geometry primarily for predicting sites and relative reactivities towards electrophilic and nucleophilic attack. The delocalization of electron density of various constituents of the molecule has been discussed with the aid of NBO analysis. The electronic properties, such as excitation energies, oscillator strength, wavelengths, HOMO and LUMO energies, were calculated by time-dependent density functional theory (TD-DFT) and the results complement the experimental findings. The recorded and calculated 1H chemical shifts in gas phase and MeOD solution are gathered for reliable calculations of magnetic properties. Thermodynamic properties like heat capacity (C°p,m), entropy (S°m), enthalpy (H°m) have been calculated for the molecule at the different temperatures. Based on the finite-field approach, the non-linear optical (NLO) parameters such as dipole moment, mean polarizability, anisotropy of polarizability and first order hyperpolarizability of 4N4MSP molecule are calculated. The predicted first hyperpolarizability shows that the molecule has a reasonably good nonlinear optical (NLO) behavior.
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Affiliation(s)
- Amit Kumar
- Department of Physics, University of Lucknow, Lucknow, India; Department of Applied Physics, Faculty of Engineering and Technology, M.J.P. Rohilkhand University, Bareilly, India
| | - Vipin Deval
- Department of Applied Physics, Faculty of Engineering and Technology, M.J.P. Rohilkhand University, Bareilly, India
| | - Poonam Tandon
- Department of Physics, University of Lucknow, Lucknow, India
| | - Archana Gupta
- Department of Applied Physics, Faculty of Engineering and Technology, M.J.P. Rohilkhand University, Bareilly, India.
| | - E Deepak D'silva
- Department of Physics, Center for Post Graduate Studies and Research, St. Philomena College, Puttur, India
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Polat T. Theoretical study of the solvent effects on the molecular structure and vibrational spectra of 2-hydroxy-4-methyl-3-nitropyridine. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.03.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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