title: Half-titanocenes for precise olefin polymerisation: effects of ligand substituents and some mechanistic aspects.
abstract: Selected examples concerning effects of both cyclopentadienyl fragment (Cp') and anionic donor ligand (Y) in nonbridged modified half-titanocenes of the type, Cp'TiX(2)(Y) (X = halogen, alkyl), as new type of olefin polymerisation catalysts have been reviewed. These complexes displayed unique characteristics not only for ethylene (co)polymerisation but also for syndiospecific styrene polymerisation, ethylene/styrene copolymerisation; precise fine tuning of the ligand substituents plays an important role for the successful (co)polymerisation; a different mechanistic consideration for the syndiospecific styrene polymerisation, which can explain the copolymerisation behaviour in this catalysis, has also been introduced.
authors.affiliation: Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo, 192-0397, Japan. ktnomura@tmu.ac.jp
authors.forename: Kotohiro
authors.initials: K
authors.lastname: Nomura
authors.forename: Jingyu
authors.initials: J
authors.lastname: Liu