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The low-temperature form of calcium gold stannide, CaAuSn

机译:锡酸锡金钙的低温形式

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The EuAuGe-type CaAuSn phase has been synthesized and single-crystal X-ray diffraction analysis reveals that it has an ortho-rhom-bic symmetry (space group Imm2), with a = 4.5261 (7) ?, b = 7.1356 (11) ? and c = 7.8147 (11) ?. The structure features puckered layers that are connected by homoatomic Au - Au and Sn - Sn inter-layer bonds. This structure is one of the two parent structures of its high-temperature polymorph (ca 873 K), which is an inter-growth structure of the EuAuGe- and SrMgSi-type structures in a 2:3 ratio.
机译:合成了EuAuGe型CaAuSn相,单晶X射线衍射分析表明它具有正交斜对称性(空间群Imm2),a = 4.5261(7)α,b = 7.1356(11) ?并且c = 7.8147(11)Ω。该结构具有褶皱层,该褶皱层通过同原子的Au-Au和Sn-Sn层间键连接。该结构是其高温多晶型物(ca 873 K)的两个母体结构之一,它是EuAuGe型和SrMgSi型结构以2:3比率生长的共生结构。

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