oligosilylalkynes were converted to the respective dicobalt hexacarbonyl complexes. These compounds were found to be surprisingly reactive, indicating Si−Si bond activation in the coordination sphere of the cobalt atoms. The presence of more than one silicon−silicon bond restricted clean conversions, and therefore the pentamethyldisilanylphenylacetylene complex was prepared, which engaged in defined reactions. The
将许多低聚甲
硅烷基
炔烃转化为各自的二
钴六羰基配合物。发现这些化合物具有令人惊讶的反应性,表明
钴原子配位区内的Si-Si键活化。多个
硅-
硅键的存在限制了纯净的转化率,因此制备了五甲基二
硅烷基
苯乙炔配合物,该配合物参与了确定的反应。观察到低聚
硅烷基炔基二
钴六羰基配合物重排为二
钴六羰基双(二烷基亚甲
硅烷基)配合物。三(三甲基甲
硅烷基)
硅烷与双羰基八羰基化合物的反应产生了用二甲基亚甲
硅烷基形式取代两个羰基
配体的产物。