Preparation of titanium(ii) or zirconium(ii) complexes

Details Preparation of titanium(ii) or zirconium(ii) complexes Preparation of titanium(ii) or zirconium(ii) complexes

C - Chemistry, Metallurgy

07

F

C07F 17/00 (2006.01)

Patent

CA 2343948

Titanium and zirconium complexes comprising one or more, cyclic, delocalized .pi.-bonded ligand groups wherein the metal of said complexes is in the +2 formal oxidation state are prepared in high yield and purity by reaction of the corresponding titanium or zirconium halides in the +3 or +4 oxidation state with a di(C1-20alkyl) magnesium reagent. The complexes are used as catalyst components for olefin polymerization catalysts.

On prépare en grande quantité des complexes de titane et de zirconium de grande pureté, comprenant au moins un groupe ligand cyclique, délocalisé et à liaison .pi., le métal desdits complexes se trouvant à l'état d'oxydation formel +2, en mettant des halogénures de titane ou de zirconium à l'état d'oxydation +3 ou +4, avec un réactif au magnésium de di(alkyleC¿1?-C¿20?). Lesdits complexes sont utilisés comme composants de catalyseurs pour les catalyseurs de polymérisation d'oléfines.

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