Ethylene tetramerization with cationic chromium(I) complexes

Adam J. Rucklidge, David S. McGuinness, Robert P. Tooze, Alexandra M. Z. Slawin, Jeremie D. A. Pelletier, Martin J. Hanton, Paul B. Webb

Research output: Contribution to journalArticlepeer-review

113 Citations (Scopus)

Abstract

Various [Cr(CO)(4)(P boolean AND P)](+) complexes have been synthesized and tested for the tetramerization of ethylene to give principally 1-octene. The effect of the anion has been investigated, and it has been found that for successful catalysis an extremely weakly coordinating anion is required. This study shows that when [Al(OC(CF3)(3))(4)](-) is employed as the anion, along with triethylaluminum and PNPiPr as the coordinated diphosphine, the system is active for the tetramerization of ethylene. This is the first example of Cr-I being used as a catalyst precursor for selective tetramerization and gives evidence toward the catalytic cycle acting through a Cr-I -> Cr-III cationic mechanism.

Original languageEnglish
Pages (from-to)2782-2787
Number of pages6
JournalOrganometallics
Volume26
DOIs
Publication statusPublished - 7 May 2007

Keywords

  • METAL-CARBONYL DERIVATIVES
  • TRIMERIZATION CATALYSTS
  • LIGANDS
  • ACTIVATION
  • 1-HEXENE
  • MONOXIDE
  • SYSTEM
  • ETHENE

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