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钼铁混合金属原子簇Mo_2Fe_2Te_2(CO)_7(η~5-C_5H_5)_2是Fe_3Te_2(CO)_9与Mo_2(CO)_6(η~5～C_5H_5)_2反应所得的产物之一。它的晶体属正交晶系,空间群为Pbn2_1。晶胞参数:a=12.172(5);b=13.595(2);c=12.924(4)A,V=2138.5(2)A~3。晶体结构由直接法及差值Fourier合成解出,经最小二乘法修正,最终R因子为0.030(3233个Ⅰ>26(Ⅰ)的反射)。在簇分子中,四个金属原子呈四面体构型,两个μ_8-Te原子和一个不对称的μ_8-CO分别桥连到四面体的三个三角面的金属原子上,从而构成了缺顶点的类立方烷结构。
Mo_2Fe_2Te_2 (CO) _7 (η ~ 5-C_5H_5) _2 is one of the products of the reaction between Fe_3Te_2 (CO) _9 and Mo_2 (CO) _6 (η_5 ~ C_5H_5) _2. Its crystal is orthorhombic, space group is Pbn2_1. Cell parameters: a = 12.172 (5); b = 13.595 (2); c = 12.924 (4) A, V = 2138.5 (2) A ~ 3. The crystal structure was solved by the direct method and the difference Fourier synthesis. After the least square method was applied, the final R factor was 0.030 (reflection of 3233 I> 26 (I)). In the cluster molecules, the four metal atoms have a tetrahedral configuration, two μ_8-Te atoms and one asymmetric μ_8-CO bridge to the three triangular metal atoms of the tetrahedron, respectively, thus forming a missing vertex Of the class of cubic alkane structure.