Abstract: | The reactions of hydrosilane and/or alkyne as well as isonitriles with rhodium and rhodium cobalt mixed metal carbonyl clusters, e.g., Rh4(CO)12 and Co2Rh2(CO)12, are studied. Novel mixed metal complexes, e.g., CoRh(CO)5 (HC CBu
n
), (R3Si)2Rh(CO)
n
Co(CO)4, Rh(R–N C)4Co(CO)4, Co2Rh2(CO)10(HC CR), and Co2Rh2(CO)9(HC CBu
n
), are synthesized and identified. The catalytic activities of these rhodium and rhodium-cobalt mixed metal complexes are examined in hydrosilyation, silylformylation, and novel silylcarbocyclization reactions. Possible mechanisms for these reactions are proposed and discussed. |