The reactivity of an iridaphosphirene complex, [Ir(═C(But)P(Cy))(CO)(PPh3)2], Cy = cyclohexyl, toward electrophiles

Markus Brym, Cameron Jones, Mark Waugh

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)


The reactivity of an iridaphosphirene complex, [Ir(═C(But)P(Cy))(CO)(PPh3)2], Cy = cyclohexyl, toward a variety of electrophiles has been examined and in all cases reactivity occurs at the phosphorus centre within the three membered ring. Reaction with several protic reagents has led to the formation of the iridaphosphirenium salts, [Ir(═C(But)P(H)(Cy))(CO)(PPh3)2]X, X = BF4−, CF3SO3− or CF3CO2−, two of which have been crystallographically characterised. Though thermally stable in the solid state, in dichloromethane solutions these rearrange via 1,2-hydrogen migrations over seven days to give the Ir(i)–η1-phosphaalkene complexes, [Ir(CO)(PPh3)21-P(Cy)═C(H)(But))]X, one of which (X = BF4−) has been crystallographically characterised. The reactions of [Ir(═C(But)P(Cy))(CO)(PPh3)2] with MeI, S and Se have also been investigated and found to give the complexes, [Ir(═C(But)P(Me)(Cy))(CO)(PPh3)2]I and [Ir(═C(But)P(═E)(Cy))(CO)(PPh3)2] E = S or Se, the former two of which have been structurally authenticated.

Original languageEnglish
Pages (from-to)2889-2893
Number of pages5
JournalDalton Transactions
Issue number14
Publication statusPublished - 9 Jul 2003
Externally publishedYes


  • Iridaphosphirene
  • Iridium
  • Phosphorus
  • Transition metals
  • X-ray diffraction, X-ray powder diffraction

Cite this