Department of Physics, University of Science and Technology Beijing, Beijing 100083, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2013 Oct;114:137-43. doi: 10.1016/j.saa.2013.05.067. Epub 2013 May 29.
IR spectra of TATB at different temperature were investigated for vibrational assignments. The results showed that the hydrogen bonding interaction of TATB was significantly weakened with increasing the temperature. Based on the frequency shifts of the hydrogen bonding interaction to several vibrational modes, 12 absorbance bands in the region 600-1700 cm(-1) were assigned to corresponding vibrational modes. In addition, Fermi resonance effect between NO2 and NH2 scissors was observed, and the enhancement of Fermi resonance effect caused the intensity of v3 (at 1545 cm(-1)) to grow during heating.
研究了不同温度下 TATB 的红外光谱，以进行振动归属。结果表明，随着温度的升高，TATB 的氢键相互作用显著减弱。基于氢键相互作用对几个振动模式的频率位移，将 600-1700 cm(-1) 区域的 12 个吸收带分配给相应的振动模式。此外，观察到了 NO2 和 NH2 剪刀之间的费米共振效应，加热过程中费米共振效应的增强导致 v3（在 1545 cm(-1)）的强度增加。
