High-pressure Raman spectra of p-diiodobenzene

被引:1
|
作者
Farina, L [1 ]
Palazzi, L [1 ]
Venuti, E [1 ]
Della Valle, RG [1 ]
Brillante, A [1 ]
机构
[1] Univ Bologna, Dipartimento Chim Fis & Inorgan, I-40136 Bologna, Italy
来源
JOURNAL OF PHYSICAL CHEMISTRY A | 2000年 / 104卷 / 47期
关键词
D O I
10.1021/jp0022353
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report a detailed experimental investigation of Raman phonon spectra of crystals of 1,4-diiodobenzene (p-DIB) in the pressure range 0-7.5 GPa. Strong modifications of spectral profiles as a function of pressure suggest the possibility of two pressure-induced phase transitions at 0.4 and 1.7 GPa. Quasi-harmonic lattice dynamics (QHLD) calculations, based on intermolecular atom-atom potentials, are applied to model the ambient p,T crystal structure and the pressure dependence of the Raman-active lattice phonons.
引用
收藏
页码:11070 / 11074
页数:5
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