A Base-Stabilized Silylene with a Tricoordinate Silicon Atom as a Ligand for a Metal Complex

Treatment of base stabilized silylene [PhC(NtBu)2]SiOtBu (1) with a tricoordinate silicon atom and diiron nonacarbonyl [Fe2(CO)9] in tetrahydrofuran led to the formation of {[PhC(NtBu)2]SiOtBu}Fe(CO)4 (2), the first stable metal complex derived from a base-stabilized tricoordinate silylene ligand. The solid-state structure and bonding situation of 2 were investigated with single-crystal X-ray diffraction and quantum chemical calculations.