Synthesis and structure determination of a new cerium titanium oxysulfide [Ce20Ti11S44O6]

被引：13

作者：

Cody, JA

Deudon, C

Cario, L

Meerschaut, A

机构：

[1] Inst. des Matériaux de Nantes, UMR-CNRS 110, Laboratoire de Chimie des Solides, 44322 Nantes Cedex 3

来源：

MATERIALS RESEARCH BULLETIN | 1997年 / 32卷 / 09期

关键词：

inorganic compounds; chemical synthesis; X-ray diffraction; crystal structure;

D O I：

10.1016/S0025-5408(97)00094-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The new compound Ce20Ti11S44O6 crystallizes in space group D-2h(13)-Pmmn of the orthorhombic system with two formula units in a cell of dimensions a = 22.4628(8), b = 14.2531(7), and c = 10.382(2) (T = 293 K). Isostructural with La20Ti11S44O6, this Compound comprises (2)(infinity)[(Ti4S2O4)(TiS6)(2/2)(Ti2S10)(2/2)] layers of [Ti(4)S2O(4)] clusters linked together by edge-sharing, rutile-like chains of TiS6 octahedra. An additional pair of corner-sharing, oxygen-bridged, Ti-centered octahedra are found separated from the covalently-bonded layers. Charge balance restrictions require that Ti atoms be in the mixed oxidation states of 3+ or 4+. The seven crystallographically independent Ce atoms are found in three different coordination polyhedra. (C) 1997 Elsevier Science Ltd.

引用

页码：1181 / 1192

页数：12

共 13 条

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[2]

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