σ and π Organometallic derivatives of titanium(III) and vanadium(III) bonded to a dibenzotetramethyletetra-aza[14]annulene ligand

Abstract

Reaction of MCl₃(thf)₃(thf = tetrahydrofuran; M = Ti or V) with Li₂(tmtaa = 7,16-dihydro-6,8,16,17-tetramethyldibenzo[b,i][1,4,8,11]tetra-azacyclotetradecinato dianion) led to [M(tmtaa)(Cl)] complexes, which can be transformed into the corresponding organometallic derivatives [(tmtaa)V(mes)](mes = mesityl) and [(tmtaa)M(η⁵-C₅H₅)](M = V or Ti), whose structure was proven by X-ray analysis.