NEW CONDUCTING RADICAL-CATION SALTS BASED ON BEDTTF AND TETRACYANOMETALLATES SQUARE-PLANAR DIANIONS [M(CN)42-, M=PT(II), NI(II)]

被引：5

作者：

FETTOUHI, M ^{[1
]}

OUAHAB, L ^{[1
]}

GRANDJEAN, D ^{[1
]}

AMIELL, J ^{[1
]}

CANET, R ^{[1
]}

DELHAES, P ^{[1
]}

机构：

[1] CNRS,CTR RECH PAUL PASCAL,F-33600 PESSAC,FRANCE

来源：

SYNTHETIC METALS | 1993年 / 56卷 / 01期

关键词：

D O I：

10.1016/0379-6779(93)90343-U

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The BEDTTTF salts based on tetracyanometallate dianions exhibit a rich polymorphism giving rise to semiconductor, metallic and even superconductor materials. New (BEDTTTF)4M(CN)2(H2O)x (M=Ni, Pt ; x=0-->4) phases were prepared. The stoichiometries have been determined by X ray analysis and agree well with the TGA (theromo-gravimetric analysis) results. These salts are isostructural and show a conductor-insulator transition at low temperature. A single crystal structure on the Ni (x=4) salt has been carried out. Crystals belong to the monoclinic space group P2/c with a=17.403(4), b=6.767(9), 15.030(3), beta=109.26(2), R=0.05 for 2795 reflexions. The ESR line width dependence on temperature revealed a phase transition at about 180K. These phases an highly localised and present good candidates for a low temperature Peierls transition.

引用

页码：1893 / 1898

页数：6

共 10 条

[1] STRUCTURE AT 293-K AND 135-K OF BETA-TETRAKIS[BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE] TETRACYANOPLATINATE(II) - BETA-[BEDT-TTF]4[PT(CN)4] [J].