HMn(CO)5, HMo(CO)3Cp, and HFe(CO)2Cp (Cp = cyclopentadienyl) were found to react with Co2(CO)8forming HCo(CO)4and the corresponding mixed-metal carbonyl dimers. It was shown that HMo(CO)3Cp transferred the hydrogen atom to Co2(CO)8and CoMn(CO)9in reversible processes. The substituted hydride HMn(CO)4P-n-Bu3and Co2(CO)8afforded (CO)4CoMn(CO)4P-n-Bu3which was characterized by elementary analysis and IR and mass spectroscopy. Its reaction with HMo(CO)3Cp gave HMn(CO)4P-n-Bu3and CoMo(CO)7Cp. The attack of the hydrides took place in mixed-metal complexes exclusively on the cobalt atom. A mechanism in which the hydrides oxidatively add to a coordinatively unsaturated Co center formed by CO loss is proposed.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry