Dinuclear metallocene complexes as catalyst precursors for homogeneous ethylene polymerization

Four dinuclear alkylidene-bridged zirconocene complexes were synthesized applying hydrozirconation reaction of α,ω-dienes with the “Schwartz’ reagent” and tested for the polymerization of ethylene. The polyethylenes obtained with alkylidene-bridged dinuclear complexes showed higher molecular weights Mw and polydispersities revealing that more catalytically active species exist in the polymerization system.

Four dinuclear alkylidene-bridged zirconocene complexes were synthesized applying hydrozirconation reaction of α,ω-dienes with the “Schwartz’ reagent” and tested for the polymerization of ethylene. The polyethylenes obtained with alkylidene-bridged dinuclear complexes showed higher molecular weights Mw and polydispersities revealing that more than one catalytically active species exist in the polymerization system. Figure optionsDownload as PowerPoint slide