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<strong>Ab initio and DFT studies on structure, vibrational spectra of 4-tert-butyl-1,3-thiazol-2-amine (BTA)</strong>

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Title Statement <strong>Ab initio and DFT studies on structure, vibrational spectra of 4-tert-butyl-1,3-thiazol-2-amine (BTA)</strong>
 
Added Entry - Uncontrolled Name kumar, v vasantha; MLRITM
Laxmikanth Rao, J ; CSIR-Indian Institute of Chemical Technology
Nagabhushanam, M
 
Uncontrolled Index Term modern physics; molucular physics; density functional theory
Thiazole; FT-IR spectra; DFT calculations; Hyperpolarizability; Thermodynamic properties
 
Summary, etc. Theoretical studies have been carried out on 4-tert-butyl-1, 3-thiazol-2-amine (BTA) using both the B3LYP/6-311+G and HF/6-311+G methods. The geometrical parameters and vibrational spectra of BTA have been calculated and analyzed. The calculated IR wavenumbers have been compared with the observed FTIR wavenumbers. The complete assignments have been performed based on the potential energy distribution (PED) of the vibrational modes. The wavenumbers obtained from B3LYP method are in good agreement with the observed wavenumbers when compared to HF method. It has been found that there is an excellent correlation with 0.999 regression coefficient between the experiment and calculated vibrations. Thermal properties like rotational constants, zero point vibrational energies and nonlinear optical properties like dipole moment, hyperpolarizabilities, NBO analysis and the effect of temperature on various thermodynamic properties have been calculated and orted.
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2017-06-20 13:27:52
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/13706
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 55, ##issue.no## 6 (2017): Indian Journal of Pure & Applied Physics
 
Language Note en
 
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