Zirconium and Hafnium Ziegler-Natta catalysts containing the [(2,6C12C6H3NCH2CH2)2NMe] ([ArciN2NMe]) ligand were prepared and employed in the polymerization of 1-hexene. Hafnium Ziegler-Natta catalysts containing the [(2,6X2C6H3NHCH2)2C(CH3)(2-C5H4N)] ([Arx2NPy]) (X = Cl or F) ligand were also prepared for use in 1-hexene polymerization studies. Compounds of the type [Ligand]MR 2 (R = Me, i-Bu)...
