Salalen titanium complexes in the highly isospecific polymerization of 1-hexene and propylene

Konstantin Press, Ad Cohen, Israel Goldberg, Vincenzo Venditto, Mina Mazzeo, Moshe Kol

Research output: Contribution to journalArticlepeer-review

Abstract

All lined up: C1-symmetric octahedral titanium complexes (see structure, Ti dark gray, N blue, O red, I purple) whose labile positions reside in different electronic environments were designed using the readily available salalen ligands. With methylalumoxane as co-catalyst, highly active catalysts were obtained, which yielded high-molecular-weight polypropylene with ultra-high isotacticities (see 13C NMR spectrum) and melting transitions.

Original languageEnglish
Pages (from-to)3529-3532
Number of pages4
JournalAngewandte Chemie - International Edition
Volume50
Issue number15
DOIs
StatePublished - 4 Apr 2011

Keywords

  • N,O ligands
  • catalyst design
  • polymerization
  • tacticity
  • titanium

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