Reactivity of cobalt(0) and cobalt(I) complexes with diynes towards C=C, CN, and CC bonds. X-Ray structure of a cyclopentadienylcobaltcyclopentadiene complex

Article abstract of DOI:10.1016/0022-328X(91)80160-L

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 cyclopentadienylcobaltacyclopentadiene(III) complex is described.