A Bis-[C(trimethylsilyl)-<i>N</i>-arylimino]dimethylsilane, Me₃Si(CNAr)SiMe₂(CNAr)SiMe₃ (Ar = 2,6-xylyl), as a New β-Diimine Ligand^‖

A cobalt complex having bis-[C(trimethylsilyl)-N-arylimino]dimethylsilane, Me3Si(CNAr)SiMe2(CNAr)SiMe3 (Ar = 2,6-xylyl), as a new β-diimine ligand was synthesized, and its structure was compared with those of α- and β-diimine cobalt complexes. Ethylene polymerization catalyzed by these cobalt complexes and their in situ generated nickel homologues was investigated.