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化学学报
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化学学报 ›› 2000, Vol. 58 ›› Issue (7): 884-889. 上一篇    下一篇

研究论文

簇外环化镍十硼烷簇合物的合成与结构研究

窦建民;胡春华;姚海军;李雪;金若水;郑培菊   

  1. 山东省聊城师范学院化学系;复旦大学分析测试中心.上海(200433);复旦大学 化学系.上海(200433)
  • 发布日期:2000-07-15

Synthesis and crystal structures of exo-polyhedral cyclized nickelaundecaborane clusters

Dou Jianmin;Hu Chunhua;Yao Haijun;Li Xue;Jin Ruoshui;Zheng Peiju   

  1. Fudan Univ, Ctr Anal & Measurement.Shanghai(200433);Fudan Univ, Dept Chem.Shanghai(200433)
  • Published:2000-07-15

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被引次数

1

研究了[NiCl~2(PPh~3)~2]，B~1~0H~1~0^2^-与硫代苯甲酸的反应，得到四个簇合物，其中三个簇合物[(PPh~3)(PhCOS)~2Ni·B~1~0H~1~0]·0.5C~6H~1~4(1)，[(PhCOS)~2NiB~1~0H~8(PPh~3)](2)，[(PhCOS)~3NiB~1~0H~7(PPh~3)](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。

关键词: 硼烷类, 镍化合物, 簇状化合物, 晶体结构, Ｘ射线衍射分析, 国家自然科学基金委员会基金

Four nickelaundecaborane clusters have been isolated from the reaction of [NiCl~2(PPh~3)~2] with B~1~0H~1~0^2^- in the present of PhCOSH. Three of them [(PPh~3)(PhCOS)~2Ni· B~1~0H~1~0]·0.5C~6H~1~4 (1), [(PhCOS)~2NiB~1~0H~8(PPh~3)](2), [(PhCOS)~3NiB~1~0H~7(PPh~3)](3) were characterized by X-ray diffraction analysis. The clusters have nido 11-vertex {NiB~1~0} 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.

Key words: BORANES, NICKEL COMPOUNDS, CLUSTER COMPOUND, CRYSTAL STRUCTURE, X-RAY DIFFRACTION ANALYSIS, FOUNDATION OF NATIONAL SCIENCE FOUNDATION COMMITTEE

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