DFT study of conformational and vibrational characteristics of 2-(2-hydroxyphenyl)benzothiazole molecule
Urmila Pandey1, Mayuri Srivastava2, R P Singh1
1Department of Chemistry, UP (PG) Autonomous College, Varanasi 221002, India.
Abstract:
The conformational and IR and Raman spectral studies of 2-(2-hydroxyphenyl)benzothiazole have been carried out by using the DFT method at the B3LYP/6-311++G(**) level. The detailed vibrational assignments have been done on the basis of calculated potential energy distributions. Comparative studies of molecular geometries, atomic charges and vibrational fundamentals of all the conformers have been made. There are four possible conformers for this molecule. The optimized geometrical parameters obtained by B3LYP/6-311++G(**) method showed good agreement with the experimental X-ray data. The atomic polar tensor (APT) charges, Mulliken atomic charges, natural bond orbital (NBO) analysis and HOMO-LUMO energy gap of HBT and its conformers were also computed.
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