The metal atom route to stable binary nickel stannylene complexes: synthesis of [Ni(SnR_2)_4][R=CH(SiMe_3)_2 or C_6HBu~t-2-Me_3-3, 4, 5]

摘要

The reaction of toluene solvated zerovalent nickel atoms with Lappert's and Weidenbruch's stannylenes: Sn{CH(SiMe_3)_2}_2 and : Sn(C_6HBu~t-2-Me_3-3, 4, 5)_2 at -78 deg C gave the first homoleptic nickel (hydrocarbyl) stannylene complexes of composition [Ni(SnR_2)_4] as stable, red to purple crystals in 58 and 33% yield. The parent stannylenes represent ligand systems capable of stabilizing small transition metal centers like Ni~0 without the necessity of any further stabilizing coligands.