Nichabhat DiteepengXiaoyan TangXiaohua HouYue Sheng LiKhamphee PhomphraiKotohiro NomuraTokyo Metropolitan UniversityMahidol UniversityChangchun Institute of Applied Chemistry Chinese Academy of Sciences2018-11-232018-11-232015-07-21Dalton Transactions. Vol.44, No.27 (2015), 12273-1228114779234147792262-s2.0-84936858581https://repository.li.mahidol.ac.th/handle/20.500.14594/35744© The Royal Society of Chemistry. Aryloxo-modified vanadium(v) dichloride complexes containing a dichloro- or difluoro-phenylimido ligand of the type, V(N-2,6-X2C6H3)Cl2(O-2,6-R2C6H3) [X = Cl (1), F (2); R = Me (a), F (b)], showed remarkable catalytic activity in ethylene polymerisation and the copolymerisation with norbornene (NBE) in the presence of Et2AlCl; the activities were higher than that of V(N-2,6-Me2C6H3)Cl2(O-2,6-Me2C6H3) reported previously. Complex 1a is a suitable catalyst precursor in terms of not only the activity, but also synthesis of high molecular weight copolymers with both unimodal molecular weight distributions and uniform compositions.Mahidol UniversityChemistryArticleSCOPUS10.1039/c4dt04026k