A comparison of the crystal structures of Sb2Tl7, Cu5Zn8 (γ-brass), and Ir3Ge7

The crystal structures of Sb 2 Tl 7 , Cu 5 Zn 8 , and Ir 3 Ge 7 are discussed with the aid of shortest distances of Dirichlet domains and of voids in their frameworks. It will be pointed out that all three frameworks must be regarded as different though relations between the atomic parameters are ob...

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Bibliographic Details
Published in:Canadian journal of chemistry 1980-04, Vol.58 (7), p.708-713
Main Authors: Hellner, Erwin, Koch, Elke
Format: Article
Language:English
Online Access:Get full text
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Summary:The crystal structures of Sb 2 Tl 7 , Cu 5 Zn 8 , and Ir 3 Ge 7 are discussed with the aid of shortest distances of Dirichlet domains and of voids in their frameworks. It will be pointed out that all three frameworks must be regarded as different though relations between the atomic parameters are obvious. The Sb 2 Tl 7 structure represents a superstructure of an I lattice. The frameworks of Sb 2 Tl 7 and of Cu 5 Zn 8 contain tetrahedral voids only, while in Ir 3 Ge 7 voids with a larger coordination number also exist.
ISSN:0008-4042
1480-3291
DOI:10.1139/v80-108