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三核簇合物(Et_4N)_2[(CO)_4MoS_2MoS_2Mo(CO)_4]和(Et_4N)_2[(CO)_4MoS_2WS_2Mo(CO)_4]的合成及晶体结构

SYNTHESIS AND CRYSTAL STRUCTURE OF THE TRINUCLEAR COMPLEXES OF (Et_4N)_2[(CO)_4Mo(μ-S)_2M(μ-S)_2Mo(CO)_4](M = Mo, W)
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摘要 合成了含Mo(O)的三核化合物(Et_4N)_2.[(CO)_4Mo(μ-S)_2Mo(μ-S)_2Mo(CO)_4](Ⅰ)和(Et_4N)_2[(CO)_4Mo(μ-S)_2W(μ-S)_2Mo(CO)_4](Ⅱ),测定了(Ⅰ)的晶体结构.Ⅰ属单斜晶系,空间群P2_1/c,a=22.790(5),b=8.701(1),c=17.764(5)(?).γ=94.09(2)°,Z=4,最终R=0.045.Ⅰ的阴离子中,三个Mo间键角175°,接近共线.整个阴离子可以看作是由2个以Mo(0)为中心的八面体和1个以Mo(Ⅵ)为中心的准四面体分别共用一条边(各由2个μ-S原子连线所成)组成的结构.Mo-Mo-Mo键距分别是2.998(1)和3.000(1),Mo(μ-S)_2Mo共平面. The trionuclear complexes of (Et4N)2[(CO)4Mo(μ-S)2Mo(μ-S)2Mo(CO)4] (Ⅰ) and(Et4N)2[(CO)4Mo(μ-S)2W(μ-S)2Mo(CO)4] (μ) were synthesised, and molecule structure of (Ⅰ) was determined by X-ray diffraction. Complex ( Ⅰ) belongs to monoclinic system and the space group is P21/c, with a = 22.790(5)A, b = 8.701(1)A, c= 17.764(5) A. γ= 94.09(2)° ,Z = 4, R = 0.045. In the anion of (Ⅰ), the bond angle of Mo(0) Mo(Ⅵ)Mo(0) is 175 ° and the 3Mo atoms lie approximately in a line. The anion of ( Ⅰ) can be regarded as the structure composed of two octahedrons with two Mo(0) atoms in the center respectively and one near-tetrahedron with the Mo(Ⅵ) atom in the center sharing two edges which are the line between the bridged sulfur atoms respectively. The Mo-Mo-Mo distances, being 2.998(1)A and 3.000(1)A, and the bimetallic center Mo(μ-S)2Mo is planar.
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 1993年第3期321-325,共5页 Chinese Journal of Inorganic Chemistry
关键词 三核簇合物 合成 结构 trionuclear cruster synthesis crystal structure
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参考文献6

  • 1余佩华,高等学校化学学报,1991年,9卷,1149页
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