Reactivity of cobalt(O) and cobalt(I) complexes with diynes towards CC, CN, and CC bonds. X-Ray structure of a cyclopentadienylcobaltacyclopentadiene complex
作者:Zhiming Zhou、Luigi Pietro Battaglia、Gian Paolo Chiusoli、Mirco Costa、Mario Nardelli、Corrado Pelizzi、Giovanni Predieri
DOI:10.1016/0022-328x(91)80160-l
日期:1991.10
The reactivities towards triple and double bonds of some new cobaltacyclopentadiene complexes, derived from cobalt(O) and cobalt(I) complexes, have been compared. Their different abilities to undergo dissociation of ligands and the different stabilities of the resulting complexes account for the lower reactivity of cobalt(I) towards activated olefins. The crystal structure of a cyclopentadienylcob
The reaction of Co4(CO)12 with the dipropargylamine [(HCCCMe2)2NMe] (ligand A) leads to moderate yields of the title complex (complex 4). An X-ray analysis has shown that this tetranuclear complex is a ‘spiked’ (or metallo-ligated) triangular cluster containing one molecule of ligand A partially cyclized and coordinated to all four metal atoms. Complex 4 is the first tetracobalt cluster showing this
Co的反应4(CO)12与二炔丙胺[(HCCCMe 2)2 NME](配体甲)导致中度的标题配合物(配合物的产率4)。X射线分析表明,该四核络合物是一个“尖峰”(或金属连接的)三角形簇,其中包含一个配体A分子,该分子部分环化并与所有四个金属原子配位。配合物4是显示这种结构的第一个四钴簇,以前仅对两个M 2 Ni 2(M = Fe,Ru)异丙烯基乙炔衍生物才发现这种结构。导致形成复合物4的反应途径 讨论。