Synthesis of (N-O)-ligated palladium(II) complexes and their use in ethene homopolymerization and norbornene copolymerizations

Ying Chen, Sukhendu Mandal, Ayusman Sen

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)3160-3168
Number of pages9
JournalOrganometallics
Volume29
Issue number14
DOIs
StatePublished - Jul 26 2010

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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