trans-1,3-pentadiene and cyclobutene complexes of rhodium(I) and iridium(I)

Robert B. Osborne*, James A. Ibers

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The generation of “MClL2” centers in THF solution (M = Ir, L = AsPh3, SbPh3; M = Rh, L = SbPh3) leads to stable η2-MCl(C5H8)L2 complexes on the addition of an excess of trans-1,3-pentadiene. For IrCl(PPh3)2, it is only possible to recover a clean pentadiene complex if the reaction is carried out in neat diene solution. Cyclobutene also coordinates to “IrClL2” (L = AsPh3, SbPh3) to form an IrCl(C4H6)L2 product when excess cyclobutene is condensed with a starting material at −78°C, THF is added, and the solution is warmed to 25°C. These 16-electron MCl(olefin)L2 complexes are stable to disproportionation after isolation from solution. The most stable complexes are formed with the tertiary arsine and stibine ligands for M = Ir.

Original languageEnglish (US)
Pages (from-to)267-272
Number of pages6
JournalJournal of Organometallic Chemistry
Issue number1
StatePublished - Jan 1 1982

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry


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