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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.43 [2005] >
IJPAP Vol.43(07) [July 2005] >
| Title: | Vibrational spectra and normal coordinate analysis of nalidixic acid |
| Authors: | Gunasekaran, S
Natarajan, R K
Rathikha, R
Syamala, D |
| Keywords: | Fourier transform infrared spectrum
Fourier transform Raman spectrum
Nalidixic acid
Normal coordinate analysis
Potential energy distribution |
| Issue Date: | Jul-2005 |
| Publisher: | CSIR |
| IPC Code: | G01J3/00 |
| Abstract: |
Nalidixic acid is
one of the important anti-bacterial with molecular formula C12H12N2O3.
Fourier transform infrared (FTIR) and Fourier transform Raman (FTR) spectra of
nalidixic acid have been used for the molecular study. A detailed vibrational
analysis has been made on the fundamental modes of vibration. A normal
coordinate analysis (NCA) has been carried out for nalidixic acid following the
Wilson’s F – G
matrix method assuming the ethyl and the methyl group as point masses. A set of
potential constants has been evaluated using the method of kinetic constants on
the basis of Cs point group symmetry. The evaluated potential
constants have been compared with those of related molecules and are in the
expected range to confirm the correctness of the assignments made. To check
whether the chosen set of vibrational frequencies contribute maximum to the
potential energy associated with the normal coordinates of the molecule
potential energy distribution (PED) has been evaluated.
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| Page(s): | 503-508 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.43(07) [July 2005]
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