Heteroligand

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C - Chemistry, Metallurgy

07

F

C07F 17/00 (2006.01) C07F 9/6568 (2006.01) C07F 9/70 (2006.01) C07F 9/80 (2006.01) C07F 9/90 (2006.01) C07F 9/94 (2006.01) C08F 4/52 (2006.01) C08F 4/622 (2006.01) C08F 10/02 (2006.01) C08F 4/659 (2006.01) C08F 110/02 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2200373

A new family of metallacycles, which are preferably zirconacycles, is characterized by having a unique halogenated substituent. The metallacycles are useful for the preparation of main group heterocycles, especially two novel families of heterocycles. The first new family of heterocycles preferably contains a halosilyl substituent. A preferred group of the second family of novel heterocycles contains a silyl group having a leaving group bonded thereto. The preferred group of these heterocycles is suitable for preparing novel organometallic complexes having a bridged bidentate heterocyclic ligand. These novel organometallic complexes may be used as catalyst components in olefin polymerization. The subject catalyst components are particularly well suited for use in the medium pressure solution process to prepare linear low density polyethylene.

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