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The low‐temperature form of calcium gold stannide, CaAuSn
Author(s) -
Lin Qisheng,
Corbett John D.
Publication year - 2014
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s205322961401612x
Subject(s) - orthorhombic crystal system , crystallography , crystal structure , diffraction , materials science , phase (matter) , single crystal , structure type , symmetry (geometry) , chemistry , optics , physics , geometry , mathematics , organic 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 Imm 2), 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.