Charge disproportionation and its ordering pattern in θ and α types of BEDT-TTF salts studied by Raman and infrared spectroscopies

被引：0
|
作者：
Yamamoto, K [1 ]
Yakushi, K
Inokuchi, M
Kinoshita, M
Saito, G
机构：
[1] Inst Mol Sci, Aichi 4448585, Japan
[2] Tokyo Univ Sci, Dept Mat Sci & Engn, Fac Sci & Engn, Yamaguchi 7560884, Japan
[3] Kyoto Univ, Dept Chem, Grad Sch Sci, Sakyo Ku, Kyoto 6068501, Japan
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2002年 / 380卷
关键词：
charge orderings; alpha-modification; theta-modification; BEDT-TTF; Raman; vibrational spectroscopy;
D O I：
10.1080/713738722
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Raman and infrared conductivity spectra are investigated to reveal two-dimensional patterns of stripe charge-ordering in theta-(BEDT-TTF)(2)RbZn(SCN)(4) and alpha'-(BEDT-TTF)(2)IBr2, Either compounds exhibit similar multiple peak pattern around the C=C stretching region in both Raman and infrared spectra owing to the electron-molecular vibration coupling and charge disproportionation. We discuss the spatial symmetry of the charge-ordering stripes from the group theoretical arguments on the selection rule of these peaks.
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收藏
页码：221 / 226
页数：6
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