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 [Fe-2(CO)(9)] in tetrahydrofuran led to the formation of ([PhC(NtBu)(2)]SiOBu)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.