PREPARATION, STRUCTURE, PROPERTIES AND PHASE-TRANSITIONS OF NEW RADICAL CATION SALTS

被引:8
作者
ENKELMANN, V
机构
[1] Max-Planck-Institut für Polymerforschung
关键词
D O I
10.1016/0379-6779(91)91421-6
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The phase transition in FA2PF6 crystals has been investigated by X-ray structure analyses. of the two transitions which have been reported for this material the higher one with a transition temperature of 206 K is a structural phase transition of second order. The displacements of the aromatic rings and of the PF6 counterions have been determined as a function of temperature. The nature of the lower transition which is observed at 180 K is still not clear. Preliminary data suggest the existence of an incommensurate structure, probably a charge density wave.
引用
收藏
页码:2547 / 2552
页数:6
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