Synthesis and Structural Analysis of (Imido)vanadium Dichloride Complexes Containing 2-(2'-Benz-imidazolyl)pyridine Ligands: Effect of Al Cocatalyst for Efficient Ethylene (Co)polymerization.

ABSTRACT: (Imido)vanadium(V) dichloride complexes containing 2-(2'-benzimidazolyl)-6-methylpyridine ligand (L) of type V(NR)Cl₂(L) [R = 1-adamantyl (Ad, 1), C₆H₅ (2), and 2,6-Me₂C₆H₃ (3)] have been prepared, and their structures were determined by X-ray crystallography as distorted trigonal bipyramidal structures around vanadium. Reactions with ethylene using 1-3 in the presence of methylaluminoxane (MAO) afforded a mixture of oligomer and polymers, and the compositions were affected by the imido ligand employed. By contrast, 1-3 exhibited remarkable catalytic activities for ethylene polymerization in the presence of Me₂AlCl; the phenylimido complex (2) exhibited the highest activit

SUBMITTER: Nomura K 

PROVIDER: S-EPMC6645497 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature