TERNARY SULFIDES OF URANIUM AND PALLADIUM .3. CHARACTERIZATION AND CRYSTAL-STRUCTURE OF PDU254

被引：9

作者：

DAOUDI, A

NOEL, H

机构：

[1] CNRS, Lab de Chimie du Solide et, Inorganique Moleculaire, Rennes, Fr, CNRS, Lab de Chimie du Solide et Inorganique Moleculaire, Rennes, Fr

来源：

JOURNAL OF THE LESS-COMMON METALS | 1986年 / 115卷 / 02期

关键词：

CRYSTALS - Structure - PALLADIUM COMPOUNDS - SULFUR COMPOUNDS;

D O I：

10.1016/0022-5088(86)90147-5

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：

The new ternary U-Pd sulfide: PdU//2S//4 crystallizes in the orthorhombic system with a equals 10. 725(3) A, b equals 13. 148(4) A, c equals 8. 381(4) A, space group Fdd2, z equals 0 The structure was determined from 435 single-crystal X-ray reflections, and refined to R equals 0. 036. Uranium is coordinated by seven sulfur atoms with a mean distance d(U-S) equals 2. 78 A. Palladium is coordinated by four sulfur atoms with different Pd-S distances (2. 376 and 2. 595 A), and has two close uranium neighbors (d(Pd-2U) 3. 095 A. From crystal radii considerations it is concluded that PdU//2S//4 is an intermediate valence system, with some electron delocalization.

引用

页码：253 / 259

页数：7

共 8 条

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