N Sundaraganesan, B Dominic Joshua, C Meganathan, R Meenashi, J P Cornard
Index: Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 70(2) , 376-83, (2008)
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The Fourier Transform Raman and Fourier Transform infrared spectra of 3,4-diaminobenzoic acid (3,4-DABA) were recorded in the solid phase. Geometry optimizations were done without any constraint and harmonic-vibrational wave numbers and several thermodynamic parameters were calculated for the minimum energy conformer at ab initio and DFT levels invoking 6-311++G(d,p) basis set. The results were compared with the experimental values with the help of specific scaling procedures, the observed vibrational wavenumbers in FT-IR and FT-Raman spectra were analyzed and assigned to different normal modes of the molecule. Most of the modes have wavenumbers in the expected range, the error obtained was in general very low. The appropriate theoretical spectrograms for the IR and Raman spectra of the title molecule were also constructed.
Structure | Name/CAS No. | Molecular Formula | Articles |
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3,4-Diaminobenzoicacid
CAS:619-05-6 |
C7H8N2O2 |
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