Synthesis, characterization, and catalytic behaviours of β-carbonylenamine-derived [O−NS]TiCl3 complexes in ethylene homo- and copolymerization

A series of [O(-)NS]TiCl(3) complexes 5a-l derived from beta-carbonylenamine were synthesized and characterized. In the presence of modified methylaluminoxane (MMAO), complexes 1, 5a-i and 5l are highly active for ethylene polymerization and copolymerization of ethylene with 1-hexene, CPE and NBE. Up to 5.12 x 10(6) g mol(-1) h(-1) atm(-1) of activity for the copolymerization of ethylene with 1-hexene is achieved with a 28.9 mol% incorporation ratio.