The crystal structure of Cu9.1(1)TeSb3, a stuffed derivative of Cr3Si

The crystal structure of Cu9.1(1)TeSb3, a stuffed derivative of Cr3Si
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Cr3Si 的填充衍生物 Cu9.1(1)TeSb3 的晶体结构

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发表时间:
1998
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影响因子:
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通讯作者:
S. Karup
S. Karup
中科院分区:
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文献类型:
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作者:
I. Søtofte;E. Makovicky;S. Karup

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在973 K下制备的金属间化合物Cu9.1(1)TeSb 3是固溶体Cu 64 Te 31 Sb 5 -Cu 70 Te 8 Sb 22的有序成员,对于更有限的组成范围,该固溶体也存在于673 K和1173 K之间。它是结构类型A1 5(Cr 3 Si)的填充衍生物。Te被12个3/4占据的Cu-位置包围,所述Cu-位置在一个经热变形的二十面体(Cu-Te =2.614 A)的顶点中,所述二十面体本身嵌套在一个Sb-二十面体(Cu-Sb = 2.777 A(x 2)和2.603 A)中。Sb阵列对应于Cr 3Si中的Cr阵列。
The intermetallic compound Cu 9.1(1) TeSb 3 prepared at 973 K is an ordered member of the solid solution Cu 64 Te 31 Sb 5 -Cu 70 Te 8 Sb 22 which also exists, for more limited composition ranges, between 673 K and 1173 K. It is a stuffed derivative of the structure type A1 5 (Cr 3 Si). Te is surrounded by twelve 3/4-occupied Cu-positions in the vertices of a cubically-deformed icosahedron (Cu-Te =2.614 A) which itself is nested in an Sb-icosahedron (Cu-Sb = 2.777 A (x 2) and 2.603 A). The Sb array corresponds to the Cr array in Cr 3 Si.