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Polymerization of ethylene by the electrophilic mixed cyclopentadienylpyridylalkoxide complexes [CpM{NC5H4(CR2O)-2}Cl2] (M = Ti, Zr, R = Ph, Pri)

Lookup NU author(s): Dr Simon Doherty, Dr John Errington, Emeritus Professor Bill Clegg, Dr Mark Elsegood

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Abstract

The group 4 mixed-ligand compounds [CpM-{NC5H4(CR2O)-2}Cl2] (M = Ti; R = Pri (1a), Ph (1b); M = Zr, R= Pri (2a), Ph (2b)) have been prepared and characterized. Single-crystal X-ray analyses reveal that 1a and 2b adopt four-legged piano-stool structures in which the cyclopentadienyl ligand is asymmetrically bonded and the pyridylalkoxide is bidentate. Toluene solutions of [CpM{NC5H4(CR2O)-2}Cl2] and methylaluminoxane catalyze the polymerization of ethylene, generating high molecular weight polymers with narrow molecular weight distributions. The activity of the titanium- and zirconium-based catalysts are comparable.


Publication metadata

Author(s): Doherty S, Errington RJ, Jarvis AP, Collins S, Clegg W, Elsegood MRJ

Publication type: Article

Publication status: Published

Journal: Organometallics

Year: 1998

Volume: 17

Issue: 16

Pages: 3408-3410

Print publication date: 07/07/1998

ISSN (print): 0276-7333

ISSN (electronic): 1520-6041

Publisher: American Chemical Society

URL: http://dx.doi.org/10.1021/om980222u

DOI: 10.1021/om980222u


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