Issue 15, 2002
From the journal:

Journal of the Chemical Society, Dalton Transactions

Zirconium complexes of cyclopenta[b]pyridine: synthesis, structure, and olefin polymerization catalysis†

Alexey N. Ryabov,a   Vyatcheslav V. Izmer,a   Anatoly A. Borisenko,a   Jo Ann M. Canich,b   Lyudmila G. Kuz'mina,c   Judith A. K. Howardd  and  Alexander Z. Voskoboynikov*a  

* Corresponding authors

a Department of Chemistry, Moscow State University, V-234, Moscow, GSP, 119899, Russian Federation
E-mail: voskoboy@org.chem.msu.su

b Baytown Polymer Center, ExxonMobil Chemical Company 5200 Bayway Drive, Baytown, Texas 77520, U.S.A.

c N. S. Kurnakov Institute of General and Inorganic Chemistry, 31 Leninsky Avenue, Moscow 117907, Russian Federation

d Department of Chemistry, Durham University, South Road, Durham, UK

Abstract

By treatment of Cp*ZrCl3 with the lithium salt of cyclopenta[b]pyridine (LiCpPy) in toluene, the unsymmetrical complex Cp*(η5-CpPy)ZrCl2 was prepared in 32% yield. On the evidence of X-ray crystal structure analysis, the bifunctional CpPy ligand coordinates Zr in an η5-manner rather than via nitrogen. Cyclopenta[b]pyridine turned out to react with Zr(NMe2)4 in toluene to form mono-cyclopentadienyl complex (η5-CpPy)Zr(NMe2)3(Me2NH) in 70% yield. The polymerization of ethylene and the copolymerization of ethylene with 1-hexene or propene catalyzed by Cp*(η5-CpPy)ZrCl2 activated with MAO was studied in detail.

Graphical abstract: Zirconium complexes of cyclopenta[b]pyridine: synthesis, structure, and olefin polymerization catalysis

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Article information

DOI
https://doi.org/10.1039/B201829B
Article type
Paper
Submitted
20 Feb 2002
Accepted
23 May 2002
First published
25 Jun 2002

J. Chem. Soc., Dalton Trans., 2002, 2995-3000

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Zirconium complexes of cyclopenta[b]pyridine: synthesis, structure, and olefin polymerization catalysis

A. N. Ryabov, V. V. Izmer, A. A. Borisenko, J. A. M. Canich, L. G. Kuz'mina, J. A. K. Howard and A. Z. Voskoboynikov, J. Chem. Soc., Dalton Trans., 2002, 2995 DOI: 10.1039/B201829B

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