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

页码：151 / 158

页数：8

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