The crystal structure of Cu9.1(1)TeSb3, a stuffed derivative of Cr3Si

Inger Søtofte, E. Makovicky, Sven Karup-Møller

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The intermetallic compound Cu9.1(1)TeSb3 prepared at 973 K is an ordered member of the solid solution Cu64Te31Sb5-Cu70Te8Sb22 which also exists, for more limited composition ranges, between 673 K and 1173 K. It is a stuffed derivative of the structure type A15 (Cr3Si). Te is surrounded by twelve 3/4-occupied Cu-positions in the vertices of a cubically-deformed icosahedron (Cu-Te = 2.614 Å) which itself is nested in an Sb-icosahedron (Cu-Sb = 2.777 Å (x2) and 2.603 Å). The Sb array corresponds to the Cr array in Cr3Si.
Original languageEnglish
JournalZeitschrift für Kristallographie - Crystalline Materials
Pages (from-to)282-385
Publication statusPublished - 1998

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