(Trialkylsilyl-cyclopentadienyl)titanium(IV) Dichloride Complexes Containing Ketimide Ligands, Cp’TiCl2(N=CtBu2) (Cp’ = Me3SiC5H4, Et3SiC5H4), as Efficient Catalysts for Ethylene Copolymerisations with Norbornene, Tetracyclododecene

Trialkylsilyl-substitued half sandwich titanium complexes containing ketimide ligands, (RC 5 H 4)TiCl 2 (N=C t Bu 2 ) (R = SiMe 3 , SiEt 3 ), especially the SiEt 3 analogue, exhibited superior catalytic activities with efficient norbornene (NBE) incorporation (25700-91400 kg-polymer/mol-Ti·h; NBE 36.2-72.7...