An Amidinate Ligand with a Pendant Amine Functionality; Synthesis of a Vanadium(III) Complex and Ethene Polymerization Catalysis[#]

Abstract

A new type of amidinate ancillary ligand has been prepared, which incorporates a pendant tertiary amine functionality. The crystal structure of a vanadium(III) derivative, [SiMe3NC(Ph)NCH2CH2NMe2]VCl2(THF) (1), shows that the ligand can adopt a facial geometry, with an unusual distortion of the amidinate nitrogen bearing the pendant functionality. With AlEt2Cl cocatalyst the compound 1 produces a single-site catalytic system for the polymerization of ethene.