High-Pressure Far- and Mid-Infrared Study of 1,3,5-Triamino-2,4,6-trinitrobenzene
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- 作者：Michael Pravica ; Brian Yulga ; Sergey Tkachev ; Zhenxian Liu
- 刊名：Journal of Physical Chemistry A
- 出版年：2009
- 出版时间：August 13, 2009
- 年：2009
- 卷：113
- 期：32
- 页码：9133-9137
- 全文大小：264K
- 年卷期：v.113,no.32(August 13, 2009)
- ISSN：1520-5215
文摘
Synchrotron infrared measurements of 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) have been performed in the far-IR and mid-IR spectral regions up to 30 and 40 GPa, respectively. For the far-IR experiment, no pressurizing medium was used, whereas KBr was utilized as a pressurizing medium for the mid-IR experiment. For both experiments, pressure was cycled and IR spectra were recorded at various pressures to ascertain sample survival. In the high frequency region (3000 cm−1) of the mid-IR spectra, the peak frequencies of the NH2 symmetric and antisymmetric vibrational modes steadily decrease with increasing pressure, indicating strengthening of intermolecular hydrogen bonding with pressure. In both experiments, no apparent phase transition was observed to the highest pressures studied.