Reactivity of the Base-Stabilized Bis(silylene)iron Complex (η5-C5H5)Fe(CO)(η2-SiMe2-OtBu-SiMe2): Elevated Temperature Trapping of SiMe2 by R3EH (R = Me3Si, E = Si, Ge) and Elimination of Me2(OtBu)SiSiMe2H by n-Bu3SnH
摘要:
The base-stabilized silylene complex (eta (5)-C5H5)Fe(CO)(eta (2)-SiMe2-(OBu)-Bu-t-SiMe2) is unreactive toward (Me3Si)(3)EH (E = Si, Ge) under photochemical irradiation or at room temperature. However, at 80 degreesC it reacts, presumably via the equilibrium concentration of base-free complex (eta (5)-C5H5)Fe(CO)((SiMe2OBu)-Bu-t)(=SiMe2), to transfer the silylene group and form (Me3Si)(3)ESiMe2H. Attempts to transfer the SiMe2 group to tributyltin hydride led to formation of bis(tributylstannyl)iron completes.