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首页> 外文期刊>Acta Crystallographica Section E: Crystallographic Communications >Crystal structure of the mixed-metal tris-ulfide BaCu1/3Ta2/3S3
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Crystal structure of the mixed-metal tris-ulfide BaCu1/3Ta2/3S3

机译:混合金属三硫化物BaCu1 / 3Ta2 / 3S3的晶体结构

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The mixed-metal title compound, BaCu1/3Ta2/3S3 [barium copper(II) tantalum(V) tris-ulfide], was prepared through solid-state reactions. The crystal structure adopts the BaTaS3 structure type and consists of face-sharing [MS6] (M = Ta,Cu) octa-hedra (point-group symmetry -3m.) that are condensed into infinite chains along [001]. Adjacent chains are linked through the barium cations (site symmetry -6m2), which exhibit a coordination number of twelve. The M site is occupied by 2/3 of TaV and 1/3 of CuII, whereby the average M—S distances are slightly longer than those of ordered BaTaS3. The classical charge balance of the title compound can be represented by [Ba2+] [(Ta/Cu)4+] [S2?]3.
机译:通过固相反应制备了混合金属标题化合物BaCu1 / 3Ta2 / 3S3 [钡铜(II)钽(V)三硫化物]。晶体结构采用BaTaS3结构类型,由面共享[MS6](M = Ta,Cu)八面体(点组对称-3m。)组成,沿着[001]缩合成无限链。相邻的链通过钡阳离子连接(位点对称性-6m2),该钡阳离子的配位数为十二。 M位点被TaV的2/3和CuII的1/3占据,因此,平均M-S距离比有序BaTaS3的距离稍长。标题化合物的经典电荷平衡可以用[Ba2 +] [(Ta / Cu)4 +] [S2α] 3表示。

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