Abstract
An oxovanadium(IV) complex with dimethyl sulfoxide exhibits a substantial catalytic activity for the reaction of polymerization of 2-hydroxyethyl methacrylate (HEMA) with high selectivity for monomer. The complex does not catalyze polymerization of other monomers, including other methacrylates. A carbo-chain structure of polymeric HEMA is established by 13 C NMR. The resulting poly-HEMA has a narrow unimodal molecular mass distribution. It is found that the polymerization is catalytic in nature. A coordination mechanism for this polymerization is proposed.
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