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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Pr30Ti24I8O25Se58: A highly symmetric structure with isolated [Ti-6(O)Se-8]-cluster units [German]
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Pr30Ti24I8O25Se58: A highly symmetric structure with isolated [Ti-6(O)Se-8]-cluster units [German]

机译:Pr30Ti24I8O25Se58:具有独立的[Ti-6(O)Se-8]簇单元的高度对称结构[德语]

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摘要

Black crystals of Pr30Ti24I8O25Se58 have been prepared by the reaction of Pr2Se3, Pr2O2Se, TiSe2-x, and I-2 at 900 degrees C. Its crystal structure can be described as a variation of the NaCl structure type (space group Fm (3) over bar m, a = 2319.91(15) pm, Z = 4). The compound contains the first example of a [Ti-6(O)Se-8] cluster. These clusters form a cubic close packing, where the octahedral and tetrahedral holes are occupied by "superoctahedral" and "supertetrahedral" building units, respectively. [References: 20]
机译:Pr30Ti24I8O25Se58的黑色晶体是通过Pr2Se3,Pr2O2Se,TiSe2-x和I-2在900摄氏度下的反应制备的。其晶体结构可以描述为NaCl结构类型的变化(空间群Fm(3) bar m,a = 2319.91(15)pm,Z = 4)。该化合物包含[Ti-6(O)Se-8]团簇的第一个例子。这些簇形成立方密堆积,其中八面体和四面体孔分别被“超八面体”和“超四面体”建筑单元占据。 [参考:20]

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