Multinuclear Cobalt-Salen complexes with phenylene linker for epoxide polymerizations

Yo Hiranoi, Miho Hatanaka, Koji Nakano

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Di-and trinuclear cobalt (Co)-salen complexes with a benzene ring as a rigid linker were explored for epoxide polymerizations. The dinuclear Co-salen complex with a 1,2-phenylene linker showed higher catalytic activity than the dinuclear Co-salen complex with a 1,3-phenylene linker and the trinuclear Co-salen complex with a 1,3,5-benzenetriyl linker for the copolymerization of propylene oxide (PO) with carbon dioxide. A combination of the absolute configuration of the two Co-salen moieties was found to affect its catalytic activity. The optimized dinuclear Co-salen complex with a heterochiral combination demonstrated highest activity and maintained its catalytic activity under a low catalyst concentration. The heterochiral dinuclear Co-salen complex also showed high activity for the copolymerization of PO with cyclic anhydride.

Original languageEnglish
Pages (from-to)2150-2159
Number of pages10
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Issue number13
Publication statusPublished - 2017 Apr 25
Externally publishedYes


  • Carbon dioxide
  • Catalysts
  • Copolymerization
  • Cyclic anhydride
  • Epoxide
  • Polycarbonates
  • Polyesters

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry


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