Polymerization of Ethylene by the Electrophilic Heteroscorpionate-Containing Complexes [TiCl3(bdmpza)] and [TiCl2(bdmpza){O(CH2)4Cl}] (bdmpza = Bis(3,5-dimethylpyrazol-1-yl)acetate)

Novel heteroscorpionate-containing titanium complexes, TiCl 3 (bdmpza) and TiCl 2 (bdmpza){O(CH 2 ) 4 Cl} (bdmpza = bis(3,5-dimethylpyrazol-1-yl)acetate), have been prepared. Toluene solutions of these complexes with methylaluminoxane catalyze the polymerization of ethylene and show a high catalytic activity.