A theoretical study on the vibrational spectra and thermodynamic properties for the nitro derivatives of phenols

作者:Wang Gui xiang*; Gong Xue dong; Liu Yan; Xiao He ming
来源:Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2009, 74(2): 569-574.
DOI:10.1016/j.saa.2009.07.013

摘要

The nitro derivatives of phenols are optimized to obtain their molecular geometries and electronic structures at the DFT-B3LYP/6-31G* level. Their IR spectra are obtained and assigned by vibrational analysis and are reliable compared with the experimental results. Based on the frequencies scaled by 0.96 and the principle of statistic thermodynamics, the thermodynamic properties are evaluated, which are linearly related with the number of nitro and hydroxy groups as well as the temperature, obviously showing good group additivity.