Reactions of dirhenium heptoxide with manganese(I) and rhenium(I) hydrido, alkoxo, methylcarbonato, carbonato-bridged, and methoxymethyl complexes. The X-ray structures of fac-(CO)3(dppp)MnOReO3 and fac-(CO)3(dppp)ReOReO3

Treatment of Re2O7 with manganese(I) and rhenium(I) hydrido {fac-(CO)3(PP)MH}, alkoxo {fac-(CO)3(PP)MOR}, methylcarbonato {fac-(CO)3(PP)MOC(O)OCH3}, carbonato-bridged [(CO)3(PP)M]2{μ-OC(O)O} and methoxymethyl {fac-(CO)3(PP)MCH2OCH3} complexes, where, R is CH3 or CH2CH3, PP is dppe {1,2-bis(diphenylphosphino)ethane} or dppp {1,3-bis(diphenylphosphino)propane}, yielded the corresponding perrhenato complexes, fac-(CO)3(PP)MOReO3 (1, M=Mn, PP=dppe; 2, M=Mn, PP=dppp; 3, M=Re, PP=dppe; 4, M=Re, PP=dppp), in moderate to excellent yield. The perrhenato complexes have been characterized spectroscopically and the molecular structures of fac-(CO)3(dppp)MnOReO3, 2 and fac-(CO)3(dppp)ReOReO3, 4 have been established through X-ray crystallography.