Further studies on the reactivity of π-cyclo-octenyl-π-cyclo-octa-1,5-dienecobalt. Formation of π-cycloheptadienyl-π-cyclo-octa-1,5-dienecobalt
Abstract
Treatment of π-cyclo-octenyl-π-cyclo-octa-1,5-dienecobalt, Co(C8H13)(C8H12), with cyclo-heptatriene (C7H8) afforded the title compound, Co(C7H9)(C8H12), from which was derived Co(C7H9)(CO)2. Co(C8H13)(P(n-C4H9)3]2 and Co(C8H13)(PPh3)2 were obtained from Co(C8H13)(C8H12) and the corresponding phosphine. The formation of the title compound in n-heptane at 65°C follows a composite rate equation, R=k[Co][C7H8]+k′[Co]½. The kinetics, volatile products analysis, and isolation of a diamagnetic, dinuclear complex [Co(C7H8)(C8H12)]2 are used to infer the reaction pathways.