Bis(2-N,N′-methylpiperazinoindenyl)zirconium dichloride. Crystal structure of bis(2-N,N′-methylpiperazinoindenyl)ZrCl2

Synthesis of bis(2-N,N′-methylpiperazinoindenyl)zirconium dichloride is described. The solid state structure, based on single crystal X-ray diffraction, shows that the compound has a nearly C2-symmetric conformation. This amino-substituted zirconium metallocene catalyst and methylaluminoxane as a cocatalyst yield polyethylene with narrow molecular weight distribution and very high activity.