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Yuan X, Halbert L, Visscher L, Pereira Gomes AS. Frequency-Dependent Quadratic Response Properties and Two-Photon Absorption from Relativistic Equation-of-Motion Coupled Cluster Theory. J Chem Theory Comput 2023; 19:9248-9259. [PMID: 38079602 DOI: 10.1021/acs.jctc.3c01011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
We present the implementation of quadratic response theory based upon the relativistic equation-of-motion coupled cluster method. We showcase our implementation, whose generality allows us to consider both time-dependent and time-independent electric and magnetic perturbations, by considering the static and frequency-dependent hyperpolarizability of hydrogen halides (HX, X = F-At), providing comprehensive insights into their electronic response characteristics. Additionally, we evaluated the Verdet constant for noble gases Xe and Rn and discussed the relative importance of relativistic and electron correlation effects for these magneto-optical properties. Finally, we calculate the two-photon absorption cross sections of transition [ns1S0 → (n + 1)s1S0] of Ga+ and In+, which are suggested as candidates for new ion clocks. As our implementation allows for the use of nonrelativistic Hamiltonians as well, we have compared our EOM-QRCC results to the QR-CC implementation in the DALTON code and show that the differences between CC and EOMCC response are in general smaller than 5% for the properties considered. Collectively, the results underscore the versatility of our implementation and its potential as a benchmark tool for other approximated models, such as density functional theory for higher-order properties.
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Affiliation(s)
- Xiang Yuan
- Physique des Lasers Atomes et Molecules, Universite de Lille, F-59000 Lille, France
- Department of Chemistry and Pharmaceutical Sciences, Faculty of Science, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Loïc Halbert
- Physique des Lasers Atomes et Molecules, Universite de Lille, F-59000 Lille, France
| | - Lucas Visscher
- Department of Chemistry and Pharmaceutical Sciences, Faculty of Science, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
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Fatima A, Khanum G, Srivastava SK, Bhattacharya P, Ali A, Arora H, Siddiqui N, Javed S. Exploring quantum computational, molecular docking, and molecular dynamics simulation with MMGBSA studies of ethyl-2-amino-4-methyl thiophene-3-carboxylate. J Biomol Struct Dyn 2023; 41:10411-10429. [PMID: 37942665 DOI: 10.1080/07391102.2023.2180667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 12/10/2022] [Indexed: 02/24/2023]
Abstract
2-aminothiophenes derivative, Ethyl-2-amino-4-methyl thiophene-3-carboxylate (EAMC) has been synthesized, characterized, and investigated quantum chemically. It was experimentally investigated by different spectroscopic methods like- NMR (1H-NMR and 13C-NMR), FT-IR, and UV-Visible. B3LYP method and 6-311++G(d,p) basis set were employed for optimization of molecular structure and calculation of wave numbers of normal modes of vibrations and various other important parameters. Calculated bond lengths and angles were compared with the experimental bond lengths and Bond Angle Parameters. Optimized bond parameters and experimental bond parameters were found in good agreement. Complete potential energy distribution assignments were done successfully by VEDA. The HOMO/LUMO energy gap emphasizes adequate charge transfer happening within the molecule. A study of donor-acceptor interconnections was done via NBO analysis. MEP surface analysis was done to demonstrate charge distribution and reactive areas qualitatively in the molecule. The degree of relative localization of electrons was analyzed via ELF Diagram. The Fukui function analysis showed possible sites for attacks by different substituents. By using the TD-DFT method and PCM solvent model, the UV-Vis spectrum (gas, methanol, DMSO) and the maximum absorption wavelength was computed and compared with experimental data. 3D and 2D intermolecular interactions in the crystal were analyzed via Hirshfeld surface analysis and fingerprint plots reveal that the EAMC crystal was stabilized by H--H/H--H/C--H bond formation. The molecular docking was done with 7 different protein receptors on the molecule to find the best ligand-protein interactions. Molecular dynamic simulations and MMGBSA calculations were also carried out to find out the best binding of the ligand with the protein.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Aysha Fatima
- S.O.S in Chemistry, Jiwaji University, Gwalior, India
- Department of Chemistry, CMP College, University of Allahabad, Prayagraj, India
| | | | | | | | - Akram Ali
- Department of Chemistry, CMP College, University of Allahabad, Prayagraj, India
| | - Himanshu Arora
- Department of Chemistry, University of Allahabad, Prayagraj, India
| | - Nazia Siddiqui
- Department of Chemistry, Dayalbagh Educational Institute, Agra, India
| | - Saleem Javed
- Department of Chemistry, University of Allahabad, Prayagraj, India
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3
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Hajam TA, H S, Mashood Ahamed FM. Structural, vibrational spectroscopy, molecular docking, DFT studies and antibacterial activity of (E)-N1-(3-chlorobenzylidene)benzene-1,4-diamine. J Biomol Struct Dyn 2023; 41:6295-6312. [PMID: 35916271 DOI: 10.1080/07391102.2022.2106516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 07/21/2022] [Indexed: 10/16/2022]
Abstract
In this work, (E)-N1-(3-chlorobenzylidene)benzene-1,4-diamine (CBD) compound was synthesized with good yield. The spectral studies were recorded by FT-IR, FT-Raman, NMR and UV-Vis to determine structural parameters. The geometrical parameters were optimized using DFT calculations at 6-311++G(d,p) basis set. The calculated structural parameters of the molecule were in line with the experimental data. The molecular orbitals of the compound were investigated through highest occupied molecular orbital (HOMO), lowest unoccupied molecular orbital (LUMO) analysis. The hyper conjugative interaction energy E(2) along with donor, acceptor electron densities (EDs) were determined by natural bond orbital (NBO) analysis. The molecular electrostatic potential (MEP), mulliken atomic charges, non-linear optical (NLO) properties and potential energy surface (PES) scan were also calculated. The 1H and 13C NMR chemical shifts calculated using Gauge invariant atomic orbital (GIAO) method were compared with the experimental NMR chemical shifts. Thermogravimetry (TG) and Differential Scanning Calorimetry (DSC) were carried out to characterise the thermal behaviour and stability of CBD molecule. In addition, PreADMET tool was also used to estimate ADME and Toxicity of CBD compound. The compound screened against four pathogens two gram positive and two gram negative had shown good anti-bacterial behaviour. The molecular docking studies executed against anti-bacterial target topoisomerase DNA gyrase enzyme (2XCT) emphasized good binding behaviour over the standard drug.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - Saleem H
- Department of Physics, Annamalai University, Chidambaram, India
| | - F M Mashood Ahamed
- PG and Research Department of Chemistry, Jamal Mohamed College, Trichy, India
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4
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Dyall KG, Tecmer P, Sunaga A. Diffuse Basis Functions for Relativistic s and d Block Gaussian Basis Sets. J Chem Theory Comput 2023; 19:198-210. [PMID: 36516433 DOI: 10.1021/acs.jctc.2c01050] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Diffuse s, p, and d functions have been optimized for use with previously reported relativistic basis sets for the s and d blocks of the periodic table. The functions were optimized on the 4:1 weighted average of the s2 and p2 configurations of the anion, with the d shell in the dn+1 configuration for the d blocks. Exponents were extrapolated for groups 2 and 12, which have unstable or weakly bound anions. The diffuse basis sets have been tested by application to calculations of electron affinities of the group 11 elements (Cu, Ag, and Au), double electron affinities of the group 11 monocations, and potential energy curves of Mg2 and Ca2 van der Waals dimers, as well as some response properties of the group 1 anions (Rb-, Cs-, and Fr-), the group 2 elements (Sr, Ba, and Ra), and RbLi, CsLi, and FrLi molecules.
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Affiliation(s)
- Kenneth G Dyall
- Dirac Solutions, 10527 NW Lost Park Drive, Portland, Oregon97229, United States
| | - Paweł Tecmer
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Torun, Grudziadzka 5, 87-100Torun, Poland
| | - Ayaki Sunaga
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka590-0494, Japan.,Department of Physics, Graduate School of Science, Kyoto University, Kyoto606-8502, Japan
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Fatima A, Ali A, Rajan R, Verma I, Muthu S, Siddiqui N, Garg P, Javed S. Experimental Spectroscopic, DFT, Molecular Docking, and Molecular Dynamics Simulation Investigations on m-Phenylenediamine (Monomer and Trimer). Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2150655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Aysha Fatima
- S.O.S in Chemistry, Jiwaji University, Gwalior, India
| | - Akram Ali
- Department of Chemistry, CMP College, Allahabad, India
| | - Ramya Rajan
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Kollam, India
| | - Indresh Verma
- Department of Chemistry, Indian Institute of Technology, Kanpur, India
| | - S. Muthu
- Department of Physics, Aringnar Anna Govt. Arts College, Cheyyar, India
| | - Nazia Siddiqui
- Department of Chemistry, Dayalbagh Educational Institute Agra, Agra, India
| | - Pankaj Garg
- Department of Chemistry, GLA University, Mathura, India
| | - Saleem Javed
- Department of Chemistry, University of Allahabad, Prayagraj, India
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6
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Garima K, Fatima A, Pooja K, Savita S, Sharma M, Kumar M, Muthu S, Siddiqui N, Javed S. Quantum Computational, Spectroscopic, Hirshfeld Surface Analysis of 3-Picoline (Monomer and Dimer) by DFT/TD-DFT with Different Solvents, Molecular Docking, and Molecular Dynamic Studies. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2140681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Km. Garima
- Department of Chemistry, Dr. Bhimrao Ambedkar University, Agra, India
- Department of Chemistry, University of Allahabad, Prayagraj, India
| | - Aysha Fatima
- School of Studies in Chemistry, Jiwaji University, Gwalior, India
| | - Km. Pooja
- Department of Chemistry, Dr. Bhimrao Ambedkar University, Agra, India
| | - Sandhya Savita
- Department of Chemistry, Dr. Bhimrao Ambedkar University, Agra, India
| | - Manoj Sharma
- Department of Chemistry, Dr. Bhimrao Ambedkar University, Agra, India
| | - Mohit Kumar
- Department of Chemistry, Dr. Bhimrao Ambedkar University, Agra, India
| | - S. Muthu
- Department of Physics, Arignar Anna Government Arts College, Cheyyar, India
| | - Nazia Siddiqui
- Department of Chemistry, Dayalbagh Educational Institute, Agra, India
| | - Saleem Javed
- Department of Chemistry, University of Allahabad, Prayagraj, India
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7
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Sharma S, Fatima A, Manhas FM, Agarwal N, Singh M, Muthu S, Siddiqui N, Javed S. Experimental Spectroscopic, Quantum Chemical, Molecular Docking, and Molecular Dynamic Simulation Studies on Hydantoin (Monomer and Dimer). Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2123540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Shikha Sharma
- Department of Chemistry, Central University of Allahabad, Prayagraj, Uttar Pradesh, India
| | - Aysha Fatima
- S.O.S in Chemistry, Jiwaji University, Gwalior, Madhya Pradesh, India
| | - Farah Manzer Manhas
- Department of Chemistry, Shoolini University, Solan, Himachal Pradesh, India
| | - Neha Agarwal
- Department of Chemistry, Central University of Allahabad, Prayagraj, Uttar Pradesh, India
| | - Meenakshi Singh
- Department of Chemistry, Central University of Allahabad, Prayagraj, Uttar Pradesh, India
| | - S. Muthu
- Department of Physics, Aringnar Anna Government Arts College, Cheyyar, Tamil Nadu, India
| | - Nazia Siddiqui
- Department of Chemistry, Dayalbagh Educational Institute Agra, Agra, Uttar Pradesh, India
| | - Saleem Javed
- Department of Chemistry, Central University of Allahabad, Prayagraj, Uttar Pradesh, India
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8
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Synthesis, crystal structure, characterization, Hirshfeld analysis, molecular docking and DFT calculations of 5-Phenylamino-isophthalic acid: A good NLO material. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132791] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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9
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Sharma A, Fatima A, Malla MA, Khanum G, Kumar A, Singh M, Abualnaja KM, Althubeiti K, Muthu S, Siddiqui N, Javed S. Molecular Docking, Dynamic Simulation and DFT Approach to Noble “2-Hydrazinobenzothiazole” Compound. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2089176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Arun Sharma
- S.O.S in Chemistry, Jiwaji University, Gwalior, Madhya Pradesh, India
| | - Aysha Fatima
- S.O.S in Chemistry, Jiwaji University, Gwalior, Madhya Pradesh, India
| | - Manzoor A. Malla
- S.O.S in Chemistry, Jiwaji University, Gwalior, Madhya Pradesh, India
| | - Ghazala Khanum
- S.O.S in Chemistry, Jiwaji University, Gwalior, Madhya Pradesh, India
| | - Anuj Kumar
- Department of Chemistry, Indian Institute of Technology, Bombay, Mumbai, India
| | - Meenakshi Singh
- Department of Chemistry, Institute of H. Science, Khandari, Dr. Bhimrao Ambedkar University, Agra, Uttar Pradesh, India
| | - Khamael M. Abualnaja
- Department of Chemistry, College of Science, Taif University, Taif, Saudi Arabia
| | - Khaled Althubeiti
- Department of Chemistry, College of Science, Taif University, Taif, Saudi Arabia
| | - S. Muthu
- Department of Physics, Aringnar Anna Govt. Arts College, Cheyyar, India
| | - Nazia Siddiqui
- Department of Chemistry, Dayal Bagh Educational Institute, Agra, Uttar Pradesh, India
| | - Saleem Javed
- Department of Chemistry, Institute of H. Science, Khandari, Dr. Bhimrao Ambedkar University, Agra, Uttar Pradesh, India
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Fatima A, Khanum G, Agrawal DD, Srivastava SK, Butcher RJ, Muthu S, Ahmad M, Althubeiti K, Siddiqui N, Javed S. Synthesis, Spectroscopic, Crystal Structure, DFT, Hirshfeld Surface and Molecular Docking Analysis of Hexahydroquinoline Derivative (HQ). Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2089174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Aysha Fatima
- S.O.S in Chemistry, Jiwaji University, Gwalior, Madhaya Pradesh, India
| | - Ghazala Khanum
- S.O.S in Chemistry, Jiwaji University, Gwalior, Madhaya Pradesh, India
| | - Dau D. Agrawal
- S.O.S in Chemistry, Jiwaji University, Gwalior, Madhaya Pradesh, India
| | | | - Ray J. Butcher
- Department of Chemistry, Howard University, Washington, District of Columbia, USA
| | - S. Muthu
- Department of Physics, Aringnar Anna Govt. Arts College, Cheyyar, India
| | - Musheer Ahmad
- Department of Applied Chemistry, Faculty of Engineering and Technology, ZHCET, Aligarh Muslim University, Aligarh, India
| | - Khaled Althubeiti
- Department of Chemistry, College of Science, Taif University, Taif, Saudi Arabia
| | - Nazia Siddiqui
- Department of Chemistry, Dayalbagh Educational Institute Agra, Agra, Uttar Pradesh, India
| | - Saleem Javed
- Department of Chemistry, Institute of H. Science, Dr. Bhimrao Ambedkar University, Agra, Uttar Pradesh, India
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Fatima A, Singh M, Abualnaja KM, Althubeiti K, Muthu S, Siddiqui N, Javed S. Experimental Spectroscopic, Structural (Monomer and Dimer), Molecular Docking, Molecular Dynamics Simulation and Hirshfeld Surface Analysis of 2-Amino-6-Methylpyridine. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2080726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Aysha Fatima
- School of Studies in Chemistry, Jiwaji University, Gwalior, India
- Department of Chemistry, Institute of H. Science, Dr. Bhimrao Ambedkar University, Agra, India
| | - Meenakshi Singh
- Department of Chemistry, Institute of H. Science, Dr. Bhimrao Ambedkar University, Agra, India
| | - Khamael M. Abualnaja
- Department of Chemistry, College of Science, Taif University, Taif, Saudi Arabia
| | - Khaled Althubeiti
- Department of Chemistry, College of Science, Taif University, Taif, Saudi Arabia
| | - S. Muthu
- Department of Physics, Arignar Anna Government Arts College, Cheyyar, India
| | - Nazia Siddiqui
- Department of Chemistry, Dayalbagh Educational Institute, Agra, India
| | - Saleem Javed
- Department of Chemistry, Institute of H. Science, Dr. Bhimrao Ambedkar University, Agra, India
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12
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Fatima A, Khanum G, Verma I, Butcher RJ, Siddiqui N, Srivastava SK, Javed S. Synthesis, Characterization, Crystal Structure, Hirshfeld Surface, Electronic Excitation, Molecular Docking, and DFT Studies on 2-Amino Thiophene Derivative. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2032769] [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]
Affiliation(s)
- Aysha Fatima
- S.O.S in Chemistry, Jiwaji University, Gwalior, MP, India
- Department of Chemistry, Institute of H. Science, Khandari, Dr. Bhimrao Ambedkar University, Agra, UP, India
| | - Ghazala Khanum
- S.O.S in Chemistry, Jiwaji University, Gwalior, MP, India
| | - Indresh Verma
- Department of Chemistry, Indian Institute of Technology, Kanpur, UP, India
| | - Ray J. Butcher
- Department of Chemistry, Howard University, Washington, DC, USA
| | | | | | - Saleem Javed
- Department of Chemistry, Institute of H. Science, Khandari, Dr. Bhimrao Ambedkar University, Agra, UP, India
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13
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Fatima A, Khanum G, Sharma A, Garima K, Savita S, Verma I, Siddiqui N, Javed S. Computational, spectroscopic, Hirshfeld surface, electronic state and molecular docking studies on phthalic anhydride. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131571] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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14
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Fatima A, Khanum G, Sharma A, Verma I, Arora H, Siddiqui N, Javed S. Experimental Spectroscopic, Computational, Hirshfeld Surface, Molecular Docking Investigations on 1H-Indole-3-Carbaldehyde. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2026989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Aysha Fatima
- S.O.S in chemistry, Jiwaji University, Gwalior, M. P., India
- Department of Chemistry, Dr. Bhimrao Ambedkar University, Agra, U.P., India
| | - Ghazala Khanum
- S.O.S in chemistry, Jiwaji University, Gwalior, M. P., India
| | - Arun Sharma
- S.O.S in chemistry, Jiwaji University, Gwalior, M. P., India
| | - Indresh Verma
- Department of Chemistry, Indian Institute of Technology, Kanpur, U.P., India
| | - Himanshu Arora
- Department of Basic and Applied Sciences, School of Engineering and Sciences, G D Goenka University, Gurugram, Haryana, India
| | | | - Saleem Javed
- Department of Chemistry, Dr. Bhimrao Ambedkar University, Agra, U.P., India
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15
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Saral A, Sudha P, Muthu S, Irfan A. Computational, spectroscopic and molecular docking investigation on a bioactive anti-cancer drug: 2-Methyl-8-nitro quinoline. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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16
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Charanya C, Sampathkrishnan S, Balamurugan N. Molecular Docking and Quantum Chemical Computations of 4-Chloro-2-[(furan-2-ylmethyl)amino]-5-sulfamoylbenzoic Acid Based on Density Functional Theory. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2021.2020309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- C. Charanya
- Department of Physics, Sri Venkateshwara College of Engineering, Sriperumbudur, Tamil Nadu, India
| | - S. Sampathkrishnan
- Department of Physics, Sri Venkateshwara College of Engineering, Sriperumbudur, Tamil Nadu, India
| | - N. Balamurugan
- Department of Physics, Dhanalakshmi College of Engineering, Tambaram, Chennai, Tamil Nadu, India
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Savita S, Fatima A, Garima K, Pooja K, Verma I, Siddiqui N, Javed S. Experimental spectroscopic, Quantum computational, Hirshfeld surface and molecular docking studies on 3-Pyridinepropionic acid. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130932] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Fatima A, Singh M, Singh N, Savita S, Verma I, Siddiqui N, Javed S. Investigations on experimental, theoretical spectroscopic, electronic excitations, molecular docking of Sulfaguanidine (SG): An antibiotic drug. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.139049] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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19
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Fatima A, Bhadoria J, Srivastava SK, Verma I, Siddiqui N, Javed S. Exploration of experimental and theoretical properties of 5,5-dimethyl 3-amino-cyclohex-2-en-1-one (AMINE DIMEDONE) by DFT/TD-DFT with ethanol and DMSO as solvents and molecular docking studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116551] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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20
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Guandalini A, Cocchi C, Pittalis S, Ruini A, Rozzi CA. Nonlinear light absorption in many-electron systems excited by an instantaneous electric field: a non-perturbative approach. Phys Chem Chem Phys 2021; 23:10059-10069. [PMID: 33870971 DOI: 10.1039/d0cp04958a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Applications of low-cost non-perturbative approaches in real time, such as time-dependent density functional theory, for the study of nonlinear optical properties of large and complex systems are gaining increasing popularity. However, their assessment still requires the analysis and understanding of elementary dynamical processes in simple model systems. Motivated by the aim of simulating optical nonlinearities in molecules, here exemplified by the case of the quaterthiophene oligomer, we investigate light absorption in many-electron interacting systems beyond the linear regime by using a single broadband impulse of an electric field; i.e. an electrical impulse in the instantaneous limit. We determine non-pertubatively the absorption cross section from the Fourier transform of the time-dependent induced dipole moment, which can be obtained from the time evolution of the wavefunction. We discuss the dependence of the resulting cross section on the magnitude of the impulse and we highlight the advantages of this method in comparison with perturbation theory by working on a one-dimensional model system for which numerically exact solutions are accessible. Thus, we demonstrate that the considered non-pertubative approach provides us with an effective tool for investigating fluence-dependent nonlinear optical excitations.
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Affiliation(s)
- Alberto Guandalini
- CNR - Istituto Nanoscienze, Via Campi 213A, I-41125 Modena, Italy. .,Dipartimento di Scienze Fisiche, Informatiche e Matematiche, Università di Modena e Reggio Emilia, Via Campi 213A, I-41125 Modena, Italy
| | - Caterina Cocchi
- Physics Department and IRIS Adlershof, Humboldt-Universität zu Berlin, Zum Großen Windkanal 2, D-12489 Berlin, Germany.,Physics Department, Carl von Ossietzky Universität Oldenburg, Carl-von-Ossietzky-Straße 9, 26129 Oldenburg, Germany
| | - Stefano Pittalis
- CNR - Istituto Nanoscienze, Via Campi 213A, I-41125 Modena, Italy.
| | - Alice Ruini
- Dipartimento di Scienze Fisiche, Informatiche e Matematiche, Università di Modena e Reggio Emilia, Via Campi 213A, I-41125 Modena, Italy
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Ahmadzadeh K, Scott M, Brand M, Vahtras O, Li X, Rinkevicius Z, Norman P. Efficient implementation of isotropic cubic response functions for two-photon absorption cross sections within the self-consistent field approximation. J Chem Phys 2021; 154:024111. [PMID: 33445884 DOI: 10.1063/5.0031851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Within the self-consistent field approximation, computationally tractable expressions for the isotropic second-order hyperpolarizability have been derived and implemented for the calculation of two-photon absorption cross sections. The novel tensor average formulation presented in this work allows for the evaluation of isotropic damped cubic response functions using only ∼3.3% (one-photon off-resonance regions) and ∼10% (one-photon resonance regions) of the number of auxiliary Fock matrices required when explicitly calculating all the needed individual tensor components. Numerical examples of the two-photon absorption cross section in the one-photon off-resonance and resonance regions are provided for alanine-tryptophan and 2,5-dibromo-1,4-bis(2-(4-diphenylaminophenyl)vinyl)-benzene. Furthermore, a benchmark set of 22 additional small- and medium-sized organic molecules is considered. In all these calculations, a quantitative assessment is made of the reduced and approximate forms of the cubic response function in the one-photon off-resonance regions and results demonstrate a relative error of less than ∼5% when using the reduced expression as compared to the full form of the isotropic cubic response function.
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Affiliation(s)
- Karan Ahmadzadeh
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Mikael Scott
- Interdisciplinary Center for Scientific Computing, Ruprecht-Karls University, Im Neuenheimer Feld 205, 69120 Heidelberg, Germany
| | - Manuel Brand
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Olav Vahtras
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Xin Li
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Zilvinas Rinkevicius
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Patrick Norman
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden
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22
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Siddiqui N, Javed S. Quantum computational, spectroscopic investigations on ampyra (4-aminopyridine) by dft/td-dft with different solvents and molecular docking studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129021] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Saue T, Bast R, Gomes ASP, Jensen HJA, Visscher L, Aucar IA, Di Remigio R, Dyall KG, Eliav E, Fasshauer E, Fleig T, Halbert L, Hedegård ED, Helmich-Paris B, Iliaš M, Jacob CR, Knecht S, Laerdahl JK, Vidal ML, Nayak MK, Olejniczak M, Olsen JMH, Pernpointner M, Senjean B, Shee A, Sunaga A, van Stralen JNP. The DIRAC code for relativistic molecular calculations. J Chem Phys 2020; 152:204104. [PMID: 32486677 DOI: 10.1063/5.0004844] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
DIRAC is a freely distributed general-purpose program system for one-, two-, and four-component relativistic molecular calculations at the level of Hartree-Fock, Kohn-Sham (including range-separated theory), multiconfigurational self-consistent-field, multireference configuration interaction, electron propagator, and various flavors of coupled cluster theory. At the self-consistent-field level, a highly original scheme, based on quaternion algebra, is implemented for the treatment of both spatial and time reversal symmetry. DIRAC features a very general module for the calculation of molecular properties that to a large extent may be defined by the user and further analyzed through a powerful visualization module. It allows for the inclusion of environmental effects through three different classes of increasingly sophisticated embedding approaches: the implicit solvation polarizable continuum model, the explicit polarizable embedding model, and the frozen density embedding model.
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Affiliation(s)
- Trond Saue
- Laboratoire de Chimie et Physique Quantique, UMR 5626 CNRS-Université Toulouse III-Paul Sabatier, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Radovan Bast
- Department of Information Technology, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - André Severo Pereira Gomes
- Université de Lille, CNRS, UMR 8523-PhLAM-Physique des Lasers, Atomes et Molécules, F-59000 Lille, France
| | - Hans Jørgen Aa Jensen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Lucas Visscher
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, NL-1081HV Amsterdam, The Netherlands
| | - Ignacio Agustín Aucar
- Instituto de Modelado e Innovación Tecnológica, CONICET, and Departamento de Física-Facultad de Ciencias Exactas y Naturales, UNNE, Avda. Libertad 5460, W3404AAS Corrientes, Argentina
| | - Roberto Di Remigio
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Kenneth G Dyall
- Dirac Solutions, 10527 NW Lost Park Drive, Portland, Oregon 97229, USA
| | - Ephraim Eliav
- School of Chemistry, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
| | - Elke Fasshauer
- Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus, Denmark
| | - Timo Fleig
- Laboratoire de Chimie et Physique Quantique, UMR 5626 CNRS-Université Toulouse III-Paul Sabatier, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Loïc Halbert
- Université de Lille, CNRS, UMR 8523-PhLAM-Physique des Lasers, Atomes et Molécules, F-59000 Lille, France
| | - Erik Donovan Hedegård
- Division of Theoretical Chemistry, Lund University, Chemical Centre, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Benjamin Helmich-Paris
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Miroslav Iliaš
- Department of Chemistry, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, 974 01 Banská Bystrica, Slovakia
| | - Christoph R Jacob
- Technische Universität Braunschweig, Institute of Physical and Theoretical Chemistry, Gaußstr. 17, 38106 Braunschweig, Germany
| | - Stefan Knecht
- ETH Zürich, Laboratorium für Physikalische Chemie, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Jon K Laerdahl
- Department of Microbiology, Oslo University Hospital, Oslo, Norway
| | - Marta L Vidal
- Department of Chemistry, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Malaya K Nayak
- Theoretical Chemistry Section, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Małgorzata Olejniczak
- Centre of New Technologies, University of Warsaw, S. Banacha 2c, 02-097 Warsaw, Poland
| | - Jógvan Magnus Haugaard Olsen
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | | | - Bruno Senjean
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, NL-1081HV Amsterdam, The Netherlands
| | - Avijit Shee
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Ayaki Sunaga
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji-city, Tokyo 192-0397, Japan
| | - Joost N P van Stralen
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, NL-1081HV Amsterdam, The Netherlands
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Pagola GI, Larsen MAB, Ferraro M, Sauer SPA. The influence of relativistic effects on nuclear magnetic resonance spin-spin coupling constant polarizabilities of H2O2, H2S2, H2Se2, and H2Te2. J Comput Chem 2018; 39:2589-2600. [DOI: 10.1002/jcc.25648] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 09/18/2018] [Accepted: 09/19/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Gabriel I. Pagola
- Departamento de Física, Facultad de Ciencias Exactas y Naturales; Universidad de Buenos Aires and IFIBA, CONICET, Ciudad Universitaria; Pabellón 1, (1428) Buenos Aires Argentina
| | - Martin A. B. Larsen
- Department of Chemistry; University of Copenhagen; Universitetsparken 5, DK-2100 Copenhagen Ø Denmark
| | - Marta Ferraro
- Departamento de Física, Facultad de Ciencias Exactas y Naturales; Universidad de Buenos Aires and IFIBA, CONICET, Ciudad Universitaria; Pabellón 1, (1428) Buenos Aires Argentina
| | - Stephan P. A. Sauer
- Department of Chemistry; University of Copenhagen; Universitetsparken 5, DK-2100 Copenhagen Ø Denmark
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25
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Quantum computational studies, spectroscopic (FT-IR, FT-Raman and UV–Vis) profiling, natural hybrid orbital and molecular docking analysis on 2,4 Dibromoaniline. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.02.022] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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26
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Parker SM, Rappoport D, Furche F. Quadratic Response Properties from TDDFT: Trials and Tribulations. J Chem Theory Comput 2017; 14:807-819. [DOI: 10.1021/acs.jctc.7b01008] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shane M. Parker
- Department
of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
| | - Dmitrij Rappoport
- Department
of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
- Department
of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Filipp Furche
- Department
of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
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27
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Abraham CS, Prasana JC, Muthu S. Quantum mechanical, spectroscopic and docking studies of 2-Amino-3-bromo-5-nitropyridine by Density Functional Method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 181:153-163. [PMID: 28359904 DOI: 10.1016/j.saa.2017.03.045] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 03/10/2017] [Accepted: 03/17/2017] [Indexed: 06/07/2023]
Abstract
Experimental and theoretical investigations on the molecular structure, electronic and vibrational characteristics of 2-Amino-3-bromo-5-nitropyridine are presented. The vibrational frequencies were obtained by DFT/B3LYP calculations employing 6-311++G (d, p) basis set. This was compared with experimental FT-IR and FT-Raman spectral data. Simulated FT-IR (4000-400cm-1) and FT-Raman spectra (4000-100cm-1) showed good agreement with the observed spectra. The molecular equilibrium geometry of the title compound was fully optimized. Quantum chemical calculations of the equilibrium geometry and the complete vibrational assignments of wavenumbers using potential energy distribution (PED) were calculated with scaled quantum mechanics. HOMO-LUMO energies, energy gap (ΔE), electronegativity (χ), chemical potential (μ), global hardness (η), softness (S) and the Fukui function were calculated for the title molecule. The title compound has a low softness value (0.239) and the calculated value of electrophilicity index (5.905) describes the biological activity. The stability and charge delocalization of the title molecule were studied by Natural Bond Orbital (NBO) analysis, Non-Linear Optical (NLO) behaviour in terms of first order hyperpolarizability, dipole moment and anisotropy of polarizability and Molecular Electrostatic Potential (MEP) were accounted. The computed values of μ, α and β for the title molecule are 1.851 Debye, 1.723×10-23esu and 7.428×10-30esu respectively. The high β value and non-zero value of μ indicate that the title compound might be a good candidate for NLO material. Thermodynamic properties of the title molecule were studied for different temperatures thereby revealing the correlations between heat capacity (C), entropy (S) and enthalpy changes (H) with temperatures. Docking studies of the title compound were scrutinized to predict the preferred binding orientation, affinity and activity of the given compound. The title compound was docked into the active site of the protein 5FCT which belongs to the class of proteins exhibiting the property as a Dihydrofolate synthase inhibitor. A minimum binding energy of -5.9kcal/mol and intermolecular energy of -6.5kcal/mol is seen in the interaction.
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Affiliation(s)
| | | | - S Muthu
- Department of Physics, Arignar Anna Government Arts College, Cheyyar 604407, Tamil Nadu, India.
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28
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Almutairi MS, Xavier S, Sathish M, Ghabbour HA, Sebastian S, Periandy S, Al-Wabli RI, Attia MI. Spectroscopic (FT-IR, FT-Raman, UV, 1H and 13C NMR) profiling and computational studies on methyl 5-methoxy-1H-indole-2-carboxylate: A potential precursor to biologically active molecules. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Falklöf O, Durbeej B, Norman P. Inter-Excited-State Phosphorescence in the Four-Component Relativistic Kohn–Sham Approximation: A Case Study on Lumiflavin. J Phys Chem A 2015; 119:11911-21. [DOI: 10.1021/acs.jpca.5b08908] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Olle Falklöf
- Division of Theoretical
Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
| | - Bo Durbeej
- Division of Theoretical
Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
| | - Patrick Norman
- Division of Theoretical
Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
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30
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Prasad MVS, Udaya Sri N, Veeraiah V. A combined experimental and theoretical studies on FT-IR, FT-Raman and UV-vis spectra of 2-chloro-3-quinolinecarboxaldehyde. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 148:163-174. [PMID: 25879986 DOI: 10.1016/j.saa.2015.03.105] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 03/04/2015] [Accepted: 03/27/2015] [Indexed: 06/04/2023]
Abstract
In the present study, the FT-IR and FT-Raman spectra of 2-chloro-3-quinolinecarboxaldehyde (2Cl3QC) have been recorded in the region 4000-400 and 3500-50 cm(-1), respectively. The fundamental modes of vibrational frequencies of 2Cl3QC are assigned. Theoretical information on the optimized geometry, harmonic vibrational frequencies, infrared and Raman intensities were obtained by means of density functional theory (DFT) gradient calculations with complete relaxation in the potential energy surface using 6-31G(d,p) basis set. The vibrational frequencies which were determined experimentally from the spectral data are compared with those obtained theoretically from DFT calculations. A close agreement was achieved between the observed and calculated frequencies by refinement of the scale factors. The infrared and Raman spectra were also predicted from the calculated intensities. Thermodynamic properties like entropy, heat capacity, zero point energy, have been calculated for the molecule. The predicted first hyperpolarizability also shows that the molecule might have a reasonably good non-linear optical (NLO) behavior. The calculated HOMO-LUMO energy gap reveals that charge transfer occurs within the molecule. Stability of the molecule arising from hyper conjugative interactions, charge delocalization have been analyzed using natural bond orbitals (NBO) analysis. The results show that charge in electron density (ED) in the π(∗) antibonding orbitals and E((2)) energies confirms the occurrence of ICT (intra-molecular charge transfer) within the molecule. UV-visible spectrum of the title molecule has also been calculated using TD-DFT/CAM-B3LYP/6-31G(d,p) method. The calculated energy and oscillator strength almost exactly reproduces reported experimental data.
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Affiliation(s)
- M V S Prasad
- Department of Physics, D.N.R. College, Bhimavaram, W.G. Dt, Andhra Pradesh 534202, India.
| | - N Udaya Sri
- Department of Physics, D.N.R. College, Bhimavaram, W.G. Dt, Andhra Pradesh 534202, India
| | - V Veeraiah
- Molecular Spectroscopy Laboratories, Department of Physics, Andhra University, Visakhapatnam, India
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31
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Synthesis, spectroscopic investigations and computational study of monomeric and dimeric structures of 2-methyl-4-quinolinol. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2084-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Swarnalatha N, Gunasekaran S, Muthu S, Nagarajan M. Molecular structure analysis and spectroscopic characterization of 9-methoxy-2H-furo[3,2-g]chromen-2-one with experimental (FT-IR and FT-Raman) techniques and quantum chemical calculations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 137:721-729. [PMID: 25262140 DOI: 10.1016/j.saa.2014.08.125] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Revised: 08/18/2014] [Accepted: 08/24/2014] [Indexed: 06/03/2023]
Abstract
Experimental and theoretical investigations on the molecular structure, electronic and vibrational characteristics of 9-methoxy-2H-furo[3,2-g]chromen-2-one (9M2HFC) were presented. The vibrational frequencies were obtained by DFT/B3LYP calculations employing 6-311++G(d,p) basis set, were compared with experimental FT-IR and FT-Raman spectral data. The FT-IR spectrum (4000-400 cm(-1)) and FT-Raman spectrum (4000-100 cm(-1)) in solid phase were recorded for 9M2HFC. The geometry of the title compound was fully optimized. Quantum chemical calculations of the equilibrium geometry, the complete vibrational assignments of wavenumbers using potential energy distribution (PED) calculated with scaled quantum mechanics infrared intensities, Raman activities of the title molecule was reported. HOMO-LUMO energies, molecular electrostatic potential, Mulliken population analysis on atomic charges, natural bond orbital (NBO) analysis, non linear optical behavior in terms of first order hyperpolarizability, and thermodynamic properties of the title molecule were carried out. Finally, simulated FT-IR and FT-Raman spectra showed good agreement with the observed spectra.
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Affiliation(s)
- N Swarnalatha
- Department of Physics, SCSVMV University, Enathur, Kanchipuram, Tamil Nadu, India.
| | - S Gunasekaran
- St. Peter's University, Avadi, Chennai, Tamil Nadu, India
| | - S Muthu
- Department of Physics, Sri Venkateswara College of Engineering, Sriperumbudur, Tamil Nadu, India
| | - M Nagarajan
- Department of Physics, Arulmigu PalaniAndavar College of Arts and Culture, Palani, India
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Muthu S, Elamurugu Porchelvi E, Karabacak M, Asiri A, Swathi SS. Synthesis, structure, spectroscopic studies (FT-IR, FT-Raman and UV), normal coordinate, NBO and NLO analysis of salicylaldehyde p-chlorophenylthiosemicarbazone. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.10.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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34
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Porchelvi EE, Muthu S. Vibrational spectra, molecular structure, natural bond orbital, first order hyperpolarizability, thermodynamic analysis and normal coordinate analysis of Salicylaldehyde p-methylphenylthiosemicarbazone by density functional method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 134:453-464. [PMID: 25033238 DOI: 10.1016/j.saa.2014.06.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 05/25/2014] [Accepted: 06/03/2014] [Indexed: 06/03/2023]
Abstract
The thiosemicarbazone compound, Salicylaldehyde p-methylphenylthiosemicarbazone (abbreviated as SMPTSC) was synthesized and characterized by FTIR, FT-Raman and UV. Density functional (DFT) calculations have been carried out for the title compound by performing DFT level of theory using B3LYP/6-31++G(d,p) basis set. The molecular geometry and vibrational frequencies were calculated and compared with the experimental data. The detailed interpretation of the vibrational spectra has been carried out with aid of normal coordinate analysis (NCA) following the scaled quantum mechanical force field methodology. The electronic dipole moment (μD) and the first hyperpolarizability (βtot) values of the investigated molecule were computed using density functional theory (DFT/B3LYP) with 6-311++G(d,p) basis set. The stability and charge delocalization of the molecule was studied by natural bond orbital (NBO) analysis. Thearomaticities of the phenyl rings were studied using the standard harmonic oscillator model of aromaticity (HOMA) index. Mulliken population analysis on atomic charges is also calculated. The molecule orbital contributions are studied by density of energy states (DOSs).
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Affiliation(s)
- E Elamurugu Porchelvi
- Department of Physics, Anna University, Chennai, Tamil Nadu, India; Department of Physics, Kanchi Pallavan Engineering College, Kanchipuram 631502, Tamil Nadu, India
| | - S Muthu
- Department of Physics, Sri Venkateswara College of Engg, Sriperumbudur 602105, Tamil Nadu, India.
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Shahidha R, Muthu S, Elamurugu Porchelvi E, Govindarajan M. Normal coordinate analysis and vibrational spectroscopy (FT-IR and FT-Raman) studies of 5-methyl-N-[4-(trifluoromethyl) phenyl]-isoxazole-4-carboxamide using density functional method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 132:142-151. [PMID: 24858355 DOI: 10.1016/j.saa.2014.04.173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 04/19/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023]
Abstract
Vibrational spectral analysis of 5-methyl-N-[4-(trifluoromethyl) phenyl]-isoxazole-4-carboxamide is (5MN4TPI4C) molecule was carried out using FT-IR and FT-Raman spectroscopic techniques. The equilibrium geometry, harmonic vibrational wavenumbers, various bonding features have been computed using density functional B3LYP method with 6-311G(d,p) as basis set. The assignments of the vibrational spectra have been carried out with the aid of normal coordinate analysis (NCA) following the scaled quantum mechanical force field methodology (SQMFFM). Stability of the molecule arising from hyper conjugative interactions, charge delocalization has been analyzed using natural bond orbital (NBO) analysis. The non-linear optical (NLO) behavior of 5MN4TPI4C has been studied by determination of the electric dipole moment (μ) and hyperpolarizability (β) by using B3LYP/6-311G(d,p) method. The molecular orbital compositions and their contributions to the chemical bonding are studied by Total density of energy states (TDOS), sum of α and β electron (αβDOS) density of states. Thermodynamic properties (heat capacity, entropy and enthalpy) of the title compound at different temperatures are calculated.
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Affiliation(s)
- R Shahidha
- Research and Development Centre, Bharathiar University, Coimbatore 641 046, India
| | - S Muthu
- Department of Physics, Sri Venkateswara College of Engineering, Sriperumbudur 602 105, India.
| | - E Elamurugu Porchelvi
- Department of Physics, Kanchi Pallavan Engineering College, Kanchipuram 631 502, Tamil Nadu, India
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Wodyński A, Pecul M. The influence of a presence of a heavy atom on the spin-spin coupling constants between two light nuclei in organometallic compounds and halogen derivatives. J Chem Phys 2014; 140:024319. [DOI: 10.1063/1.4858466] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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37
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Muthu S, Elamurugu Porchelvi E. FTIR, FT-RAMAN, NMR, spectra, normal co-ordinate analysis, NBO, NLO and DFT calculation of N,N-diethyl-4-methylpiperazine-1-carboxamide molecule. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 115:275-286. [PMID: 23845985 DOI: 10.1016/j.saa.2013.06.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 05/24/2013] [Accepted: 06/04/2013] [Indexed: 06/02/2023]
Abstract
The Fourier Transform Infrared (FT-IR) and FT-Raman of N,N-diethyl-4-methylpiperazine-1-carboxamide (NND4MC) have been recorded and analyzed. The structure of the compound was optimized and the structural characteristics were determined by density functional theory (DFT) using B3LYP method with 6-31G(d,p) and 6-311G(d,p) basis sets. The difference between the observed and scaled wavenumber values of most of the fundamentals is very small. The theoretically predicted FT-IR and FT-Raman spectra of the title molecule have been constructed. The detailed interpretation of the vibrational spectra has been carried out with aid of normal coordinate analysis (NCA) following the scaled quantum mechanical force field methodology. Stability of the molecule arising from hyperconjugative interactions and charge delocalization has been analyzed using natural bond orbital (NBO) analysis. The results show that electron density (ED) in the σ(*) and π(*) antibonding orbitals and second order delocalization energies (E2) confirm the occurrence of intramolecular charge transfer (ICT) within the molecule. The electronic dipole moment (μD) and the first hyperpolarizability (βtot) values of the investigated molecule were computed using Density Functional Theory (DFT/B3LYP) with 6-31G(d,p) and 6-311G(d,p) basis sets. The calculated results also show that the NND4MC molecule may have microscopy nonlinear optical (NLO) behavior with non zero values. Mulliken atomic charges of NND4MC were calculated. The (13)C nuclear magnetic resonance (NMR) chemical shifts of the molecule were calculated by the gauge independent atomic orbital (GIAO) method and compared with experimental results. The UV-Vis spectrum of the compound was recorded. The theoretical electronic absorption spectra have been calculated by using CIS, TD-DFT methods. A study on the electronic properties, such as HOMO and LUMO energies, molecular electrostatic potential (MEP) were also performed.
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Affiliation(s)
- S Muthu
- Department of Physics, Sri Venkateswara College of Engineering, Sriperumbudur 602 105, Tamil Nadu, India.
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Abuzaid N, Kantola AM, Vaara J. Magnetic field-induced nuclear quadrupole coupling in atomic 131Xe. Mol Phys 2013. [DOI: 10.1080/00268976.2013.793840] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Nuha Abuzaid
- a NMR Research Group, Department of Physics , University of Oulu , Oulu , Finland
| | - Anu M. Kantola
- a NMR Research Group, Department of Physics , University of Oulu , Oulu , Finland
| | - Juha Vaara
- a NMR Research Group, Department of Physics , University of Oulu , Oulu , Finland
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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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Sebastian S, Sylvestre S, Sundaraganesan N, Amalanathan M, Ayyapan S, Oudayakumar K, Karthikeyan B. Vibrational spectra, molecular structure, natural bond orbital, first order hyperpolarizability, TD-DFT and thermodynamic analysis of 4-amino-3-hydroxy-1-naphthalenesulfonic acid by DFT approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 107:167-178. [PMID: 23416921 DOI: 10.1016/j.saa.2013.01.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Revised: 01/11/2013] [Accepted: 01/11/2013] [Indexed: 06/01/2023]
Abstract
Vibrational spectral analysis of 4-amino-3-hydroxy-1-naphthalenesulfonicacid (4A3HNSA) molecule were carried out using FT-IR and FT-Raman spectroscopic techniques. The equilibrium geometry, harmonic vibrational wavenumbers, various bonding features have been computed using density functional B3LYP method with 6-31G(d,p) as basis set. The Non-Linear Optical (NLO) behavior of 4A3HNSA has been studied by determination of the electric dipole moment (μ) and hyperpolarizability β using HF/6-31G(d,p) method. Stability of the molecule arising from hyperconjugative interactions, charge delocalization have been analyzed using natural bond orbital (NBO) analysis. The results show that charge in electron density (ED) in σ(*) and π(*) antibonding orbitals and second order delocalization energies (E2) confirms the occurrence of Intramolecular Charge Transfer (ICT) within the molecule. The energy and oscillator strength calculated by Time-Dependent Density Functional Theory (TD-DFT) complements with the experimental findings. The simulated spectra satisfactorily coincide with the experimental spectra.
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Affiliation(s)
- S Sebastian
- Department of Physics (Science and Humanities), Sri Manakula Vinayagar Engg. College, Madagadipet, Puducherry 605 107, India.
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Sylvestre S, Sebastian S, Oudayakumar K, Jayavarthanan T, Sundaraganesan N. Experimental (FT-IR, FT-Raman and UV-Vis) spectra and theoretical DFT investigations of 2,3-diaminophenazine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:401-412. [PMID: 22722074 DOI: 10.1016/j.saa.2012.05.047] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 05/17/2012] [Indexed: 06/01/2023]
Abstract
Vibrational analysis of the planar electron-rich heterocyclic 2,3-diaminophenazine (DAP) molecule was carried out using FT-IR and FT-Raman spectroscopic techniques. The equilibrium geometry, harmonic vibrational wavenumbers, various bonding features have been computed using density functional method. The calculated molecular geometry parameters have been compared with XRD data. The detailed interpretation of the vibrational spectra has been carried out. The first order hyperpolarizability (β(0)) of the molecular system and related properties (β, α(0) and Δα) of DAP are calculated using HF/6-31G(d,p) method on the basis of finite-field approach. Vibrational analysis reveals that the simultaneous IR and Raman activation of the C-C stretching mode in the molecule provide the evidence for the charge transfer interaction takes place from electron donating group to the ring. The energy and oscillator strength calculated by time-dependent density functional theory (TD-DFT) results complements with the experimental findings. The simulated spectra satisfactorily coincide with the experimental spectra.
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Affiliation(s)
- S Sylvestre
- Department of Chemistry, Achariya Arts and Science College, Puducherry 605110, India.
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Meganathan C, Sebastian S, Sivanesan I, Lee KW, Jeong BR, Oturak H, Sudha S, Sundaraganesan N. Structural, vibrational (FT-IR and FT-Raman) and UV-Vis spectral analysis of 1-phenyl-3-(1,2,3-thiadiazol-5-yl)urea by DFT method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 95:331-340. [PMID: 22561753 DOI: 10.1016/j.saa.2012.03.084] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Revised: 03/15/2012] [Accepted: 03/26/2012] [Indexed: 05/31/2023]
Abstract
The Fourier Transform Infrared (FT-IR) and FT-Raman spectra of 1-phenyl-3-(1,2,3-thiadiazol-5-yl)urea (TDZ) have been recorded and analyzed. The molecular structure and vibrational spectra (harmonic and anharmonic) of TDZ were calculated by the Density Functional Theory (DFT) method using the B3LYP function with 6-31G(d,p) as the basis set. A detailed interpretation of the Infrared and Raman spectra of TDZ was reported based on Potential Energy Distribution (PED). The first order hyperpolarizability (β(0)) of this novel molecular system and related properties (β, α(0) and Δα) were calculated using HF/6-31G(d,p) method on the finite-field approach. Stability of the molecule arising from hyperconjugative interactions and charge delocalization have been analyzed using Natural Bond Orbital analysis. The results show that charge in electron density in the σ(∗) and π(∗) antibonding orbitals and second order delocalization energies E(2) confirm the occurrence of Intramolecular Charge Transfer (ICT) within the molecule. UV-Vis spectrum of the title molecule was recorded and the electronic properties such as HOMO and LUMO energies were determined by Time-Dependent Density Functional Theory approach.
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Affiliation(s)
- C Meganathan
- Division of Applied Life Science (BK21 Program), Plant Molecular Biology and Biotechnology Research Center, Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, 900 Gazwa-dong, Jinju 660-701, Republic of Korea
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Norman P, Jensen HJA. Phosphorescence parameters for platinum (II) organometallic chromophores: A study at the non-collinear four-component Kohn–Sham level of theory. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.02.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ikäläinen S, Lantto P, Vaara J. Fully Relativistic Calculations of Faraday and Nuclear Spin-Induced Optical Rotation in Xenon. J Chem Theory Comput 2011; 8:91-8. [DOI: 10.1021/ct200636m] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Suvi Ikäläinen
- Laboratory of Physical Chemistry, Department of Chemistry, P.O. Box 55 (A.I. Virtasen aukio 1), FIN-00014 University of Helsinki, Finland
| | - Perttu Lantto
- NMR Research Group, Department of Physics, P.O. Box 3000, FIN-90014 University of Oulu, Finland
| | - Juha Vaara
- NMR Research Group, Department of Physics, P.O. Box 3000, FIN-90014 University of Oulu, Finland
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Norman P. A perspective on nonresonant and resonant electronic response theory for time-dependent molecular properties. Phys Chem Chem Phys 2011; 13:20519-35. [DOI: 10.1039/c1cp21951k] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Belpassi L, Storchi L, Quiney HM, Tarantelli F. Recent advances and perspectives in four-component Dirac–Kohn–Sham calculations. Phys Chem Chem Phys 2011; 13:12368-94. [DOI: 10.1039/c1cp20569b] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Kostova I, Amalanathan M, Hubert Joe I. Molecular first order hyperpolarizability and vibrational spectral investigation of Warfarin sodium. Chem Phys 2010. [DOI: 10.1016/j.chemphys.2010.10.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Villaume S, Saue T, Norman P. Linear complex polarization propagator in a four-component Kohn–Sham framework. J Chem Phys 2010; 133:064105. [DOI: 10.1063/1.3461163] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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Relativistic Effects on Magnetic Resonance Parameters and Other Properties of Inorganic Molecules and Metal Complexes. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/978-1-4020-9975-5_12] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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van Wüllen C. Relativistic Density Functional Theory. CHALLENGES AND ADVANCES IN COMPUTATIONAL CHEMISTRY AND PHYSICS 2010. [DOI: 10.1007/978-1-4020-9975-5_5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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