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Title: The low-temperature form of calcium gold stannide, CaAuSn

Journal Article · · Acta Crystallographica Section C Structural Chemistry

The EuAuGe-type CaAuSn phase has been synthesized and single-crystal X-ray diffraction analysis reveals that it has an ortho­rhom­bic symmetry (space group Imm2), with a = 4.5261 (7) Å, b = 7.1356 (11) Å and c = 7.8147 (11) Å. The structure features puckered layers that are connected by homoatomic Au-Au and Sn-Sn inter­layer bonds. This structure is one of the two parent structures of its high-temperature polymorph (ca 873 K), which is an inter­growth structure of the EuAuGe- and SrMgSi-type structures in a 2:3 ratio.

Research Organization:
Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
DE-AC02-07CH11358
OSTI ID:
1157651
Report Number(s):
IS-J 8366; ACSCGG
Journal Information:
Acta Crystallographica Section C Structural Chemistry, Vol. 64, Issue 8; ISSN 2053-2296
Country of Publication:
United States
Language:
English