O2 Activation by Metal-Ligand Cooperation with IrI PNP Pincer Complexes

Moran Feller, Eyal Ben-Ari, Yael Diskin-Posner, Raanan Carmieli, Lev Weiner, David Milstein

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


A unique mode of molecular oxygen activation, involving metal-ligand cooperation, is described. Ir pincer complexes [(tBuPNP)Ir(R)] (R = C6H5 (1), CH2COCH3 (2)) react with O2 to form the dearomatized hydroxo complexes [(tBuPNP∗)Ir(R)(OH)] (tBuPNP∗ = deprotonated tBuPNP ligand), in a process which utilizes both O-atoms. Experimental evidence, including NMR, EPR, and mass analyses, indicates a binuclear mechanism involving an O-atom transfer by a peroxo intermediate.

Original languageEnglish
Pages (from-to)4634-4637
Number of pages4
JournalJournal of the American Chemical Society
Issue number14
Publication statusPublished - Apr 15 2015

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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