Cyclic olefin copolymers are an important class of polymeric materials. Here, we report the synthesis and characterization of several (N-O)-ligated palladium(II) complexes and their use in ethene homopolymerization, as well as ethene/norbornene and carbon monoxide/norbornene copolymerizations. Most notably, these catalysts show relatively high activity toward ethene/functional norbornene copolymerizations, and a high level of incorporation of the norbornene derivative was observed. The molecular weight of the copolymers can be controlled by adjusting the ethene/norbornene feed ratio. The ethene/nonpolar functional norbornene copolymerizations have the characteristics of a "living" polymerization at low ethene/norbornene feed ratios. Finally, the successive stepwise insertions of carbon monoxide and norbornene into a preformed palladiumcarbon bond were observed by NMR spectroscopy. © 2010 American Chemical Society.
CITATION STYLE
Chen, Y., Mandal, S., & Sen, A. (2010). Synthesis of (N-O)-ligated palladium(II) complexes and their use in ethene homopolymerization and norbornene copolymerizations. Organometallics, 29(14), 3160–3168. https://doi.org/10.1021/om1003013
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