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

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.
Publication Date:
OSTI Identifier:
Report Number(s):
IS-J 8366
Journal ID: ISSN 2053-2296; ACSCGG
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Acta Crystallographica Section C Structural Chemistry; Journal Volume: 64; Journal Issue: 8
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
36 MATERIALS SCIENCE crystal structure; single-crystal X-ray diffraction; EuAuGe-type; calcium gold stannide; low-temperature study; inter­growth structure.