Local structure of Cu2+ in the (C2H5NH3)(2)MCl4:Cu2+ (M=Cd, Mn) layer perovskites. Influence of hydrostatic pressure in the 0-60 kbar range

被引：4
|
作者：
Moral, BA
Rodriguez, F
Valiente, R
Moreno, M
Gudel, HU
机构：
[1] UNIV CANTABRIA,FAC CIENCIAS,DCITIMAC,E-39005 SANTANDER,SPAIN
[2] UNIV BERN,INST ANORGAN & PHYS CHEM,CH-3000 BERN 9,SWITZERLAND
来源：
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 1997年 / 201卷
关键词：
charge-transfer spectroscopy; hydrostatic pressure; CuCl64--complex; (C2H5NH3)(2)CdCl4; (C2H5NH3)(2)MnCl4;
D O I：
10.1524/zpch.1997.201.Part_1_2.151
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：
This paper deals with the effects of pressure on the charge-transfer spectra of CuCl64- complexes formed in Cu2+ doped (C2H5NH3)(2)MCl4 (M = Cd, Mn). A pressure-induced redshift is observed for the first charge-transfer band in both crystals. While the shift is continuous for the Mn crystal at a rate of -40 cm(-1)/kbar in the 0-60 kbar range, it experiences an abrupt jump of -1400 cm(-1) around 26 kbar for the Cd crystal. Such a discontinuous behaviour is interpreted in terms of a structural change in the CuCl64- coordination geometry from an axially elongated octahedron to a more compressed geometry. The present results are compared with those reported for the pure (C2H5NH3)(2)CuCl4 crystal.
引用
收藏
页码：151 / 158
页数：8
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