Complexes bi- et polymetalliques a base de cobalt derives du titanocene et du vanadocene

Article abstract of DOI:10.1016/0022-328X(89)85210-6

The bimetallic complexes Cp2Ti (3) and Cp2V (5) are obtained from the reaction of Cp2MCl (M=Ti, V) with ^- or from the reaction of Cp2V with Co2(CO)8.The IR data of 3 are indicative of a bridging carbonyl ligand between the two metallic moieties whereas a stretching frequency in the IR spectrum of 5 suggests a direct vanadium-cobalt bond.A fast evolution of these complexes is observed leading to the oxymethylidynetricobalt nonacarbonyl derivatives Cp2M.With substituted cyclopentadienyl complexes, the bimetallic complexes are not isolated and only cobalt cluster derivatives are obtained.