Crystal structure and phase transition of [(CH3)(2)NH2]GaCl4

被引：32
|
作者：
Jakubas, R
Bator, G
Gosniowska, M
Ciunik, Z
Baran, J
Lefebvre, J
机构：
[1] POLISH ACAD SCI,INST LOW TEMP & STRUCT RES,PL-50950 WROCLAW 2,POLAND
[2] UNIV LILLE 1,UFR PHYS,LAB DYNAM & STRUCT MAT MOL,UA 801,F-59655 VILLENEUVE DASCQ,FRANCE
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1997年 / 58卷 / 06期
关键词：
alkylammonium halogenogallate(III); phase transition; dielectric; DSC; infrared;
D O I：
10.1016/S0022-3697(96)00202-8
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new [(CH3)(2)NH2]GaCl4 crystal of the family of alkylammonium halogenogallates (III) was grown. X-ray studies showed that the crystals were orthorhombic, space group Pmcn. The lattice consists of (CH3)(2)NH2+ cations and isolated GaCl4- anions. Differential scanning calorimetry, dilatometric, dielectric and infrared studies revealed a structural phase transition of the first-order type at 100 K. The possible mechanism of the phase transition is discussed. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：989 / 998
页数：10
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