Issue 41, 2009
From the journal:

Dalton Transactions

Ethylenepolymerization in supercritical carbon dioxide with binuclear nickel(ii)catalysts

Damien Guironnet,a   Tobias Friedbergera  and  Stefan Mecking*a  

* Corresponding authors

a Chair of Chemical Materials Science, Dept. of Chemistry, University of Konstanz, Konstanz, Germany
E-mail: stefan.mecking@uni-konstanz.de
Fax: +49 7531 885152
Tel: +49 7531 885151

Abstract

A series of new, highly fluorinated neutral (κ2-N,O) chelated Ni(II) binuclear complexes based on salicylaldimines bridged in p-position of the N-aryl group were prepared. The complexes are single-component catalyst precursors for ethylene polymerization in supercritical carbon dioxide and toluene. Solubility of the catalyst precursors in supercritical carbon dioxide is effected by a large number of up to 18 trifluoromethyl groups per molecule. Semicrystalline polyethylene with a low degree of branching is formed (ca. 10 branches/1000 carbon atoms). Polymer microstructures are independent of the nature of the bridging moiety, while stability of the catalysts appears to differ.

Graphical abstract: Ethylene polymerization in supercritical carbon dioxide with binuclear nickel(ii) catalysts

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Article information

DOI
https://doi.org/10.1039/B912883B
Article type
Paper
Submitted
30 Jun 2009
Accepted
01 Sep 2009
First published
21 Sep 2009

Dalton Trans., 2009, 8929-8934

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Ethylene polymerization in supercritical carbon dioxide with binuclear nickel(II) catalysts

D. Guironnet, T. Friedberger and S. Mecking, Dalton Trans., 2009, 8929 DOI: 10.1039/B912883B

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