【摘要】 研究了[NiCl₂（PPy₃）₂],B₁₀H₁₀^2-与硫代苯甲酸的反应,得到四个簇合物,其中三个簇合物[（PPy₃）（PhCOS）₂Ni·B₁₀H₁₀]·0.5C₆H₁₄（1）,[（PhCOS）₂NiB₁₀H₈（PPh₃）]（2）,[（PhCOS）₃NiB₁₀H₇（PPh₃）]（3）.通过单晶X射线衍射进行了结构研究.三个簇合物均为十一顶巢式构型,并分别存在两个、两个、三个簇外环化的五元环,具有三个环的簇合物至今未见其它文献报道.结构分析表明:簇外环化可以增强Ni—B之间的成键作用.更多还原

【Abstract】 Four nickelaundecaborane clusters have been isolated from the reaction of [ NiCl2 (PPh3 )2 ] with B10H102- in the present of PhCOSH. Three of them [(PPh3)(PhCOS)2NiB10H10]·0.5C6H14 (1), [(PhCOS)2NiB10H8(PPh3 )] (2) , [(PhCOS)3NiB10H7 (PPh3 )] (3)were characterized by X - ray diffraction analysis. The clusters have nido 11 - vertex { NiB10} polyhedral skeletons with two, two and three exo -polyhedral cyclic Ni-S-C-O-B five-membered rings, respectively. The distance between boron atoms participating in exo - polyhedral cyclizations to nickel atom is shorter which shows that cyclization can strengthen the nickel - to - boron bonding.更多还原