title: Effect of ligand substituents in olefin polymerisation by half-sandwich titanium complexes containing monoanionic iminoimidazolidide ligands-MAO catalyst systems.
abstract: Various half-sandwich titanium complexes containing iminoimidazolidide ligands, CpTiCl(2)[1,3-R(2)(CH(2)N)(2)C=N] (1a-d) [R = Ph (a), 2,6-Me(2)C(6)H(3) (b), cyclohexyl (c), (t)Bu (d)], have been employed as the catalyst precursors for ethylene polymerisation, syndiospecific styrene polymerisation, and copolymerisation of ethylene with 1-hexene in the presence of MAO cocatalyst; 1d showed the highest catalytic activity for ethylene polymerisation whereas 1b showed the highest activity for syndiospecific styrene polymerisation.
authors: Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioiji, Tokyo 192-0397, Japan. ktnomura@tmu.ac.jp
authors: Kotohiro
authors: K
authors: Nomura
authors: Hiroya
authors: H
authors: Fukuda
authors: Shohei
authors: S
authors: Katao
authors: Michiya
authors: M
authors: Fujiki
authors: Hyun Joon
authors: HJ
authors: Kim
authors: Dong-Hyun
authors: DH
authors: Kim
authors: Shu
authors: S
authors: Zhang