MODELING OF ICOSAHEDRAL FRAMEWORKS OF GALLIUM - A NEW DISORDERED INTERMETALLIC PHASE WITH SODIUM AND CADMIUM - STRUCTURE AND BONDING

被引：26

作者：

TILLARDCHARBONNEL, M

BELIN, C

机构：

[1] Laboratoire des Agrégats Moléculaires, Matériaux Inorganiques URA CNRS 79, Université des Sciences et Techniques du Languedoc, 34095 Montpellier Cédex 5, Place Eugène Bataillon

来源：

MATERIALS RESEARCH BULLETIN | 1992年 / 27卷 / 11期

关键词：

ZINTL PHASES; CLUSTERS; GALLIUM; CADMIUM; SODIUM;

D O I：

10.1016/0025-5408(92)90092-E

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Modelling of clusters in intermetallic phases of gallium with alkali metals may be obtained by the addition of late transition elements. Na35Cd24Ga56 crystallizes in cubic Fd3m space group (a = 21.286(4)angstrom) and is formed with icosahedral (gallium) and icosioctahedral (gallium, cadmium) clusters disposed on Cu and Mg positions of a MgCu2 cubic Friauf structure type. Packing of icosahedra and icosioctahedra forms interpenetrating Samson polyhedra, complex units which have been suspected to be one of the bases for quasicrystal genesis. Bonding and electron requirements have been discussed according to the now classical procedure used for the intermetallic phases of allium.

引用

页码：1277 / 1286

页数：10

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