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

被引：31

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

页码：989 / 998

页数：10

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