Single-crystal structure of Cs2Re6S6Br8 rhenium thiobromide with acentric Re6 octahedral cluster units

被引：5

作者：

Pilet, G. ^{[1
]}

Cordier, S. ^{[1
]}

Perrin, C. ^{[1
]}

Perrin, A. ^{[1
]}

机构：

[1] Univ Rennes 1, Equipe CSM, CNRS, UMR 6226, F-35042 Rennes, France

来源：

JOURNAL OF STRUCTURAL CHEMISTRY | 2007年 / 48卷 / 04期

关键词：

rhenium; octahedral cluster; structure; disorder;

D O I：

10.1007/s10947-007-0102-0

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Cs2Re6S6Br8 (trigonal, a = 10.001(5) angstrom, c = 14.676(5) angstrom) exhibits the same structure as Cs2Mo6Cl8Br6 and Cs2Mo6Br14 that were described in a noncentro-and centrosymmetric space groups, respectively. The structure has been refined in P31c space group from a single crystal of actual composition Cs1.95(1)Re6S5.82(3)Br8.19(3) close to the cesium-rich end of the solid solution Cs2Re6S6Br8 - CsRe6S5Br9. The centrosymmetry is respected by almost all the atoms of the asymmetric unit, but it is clearly broken by significant differences in the S/Br statistical distribution of the disordered "inner" ligands around the Re-6 cluster. Structural refinements from data collected at 100 K revealed that the Cs cation disorder is static. From the structure refinements, the stable isomers of the [Re6S6Br2] and [Re6S5Br3] cluster cores have been unambiguously determined.

引用

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页码：680 / 689

页数：10

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