Dinuclear metal catalysts: improved performance of heterodinuclear mixed catalysts for CO₂-epoxide copolymerization
P K Saini1, C Romain, C K Williams
1Department of Chemistry, Imperial College London, London, SW7 2AZ, UK. c.k.williams@imperial.ac.uk.
Abstract:
Some of the most active catalysts for carbon dioxide and epoxide copolymerization are dinuclear metal complexes. Whilst efficient homodinuclear catalysts are known, until now heterodinuclear catalysts remain unreported. Here, a facile, in situ route to a catalyst system comprising a mixture of homo- and heteronuclear Zn-Mg complexes is presented. This catalyst system shows excellent polymerization control and exhibits significantly higher activity than the homodinuclear catalysts alone or in combination.
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