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 journalArticle

25 Citations (Scopus)

Abstract

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
Volume137
Issue number14
DOIs
Publication statusPublished - Apr 15 2015

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Metals
Chemical activation
Ligands
Atoms
Molecular oxygen
Paramagnetic resonance
Nuclear magnetic resonance
Oxygen

ASJC Scopus subject areas

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

Cite this

O2 Activation by Metal-Ligand Cooperation with IrI PNP Pincer Complexes. / Feller, Moran; Ben-Ari, Eyal; Diskin-Posner, Yael; Carmieli, Raanan; Weiner, Lev; Milstein, David.

In: Journal of the American Chemical Society, Vol. 137, No. 14, 15.04.2015, p. 4634-4637.

Research output: Contribution to journalArticle

Feller, M, Ben-Ari, E, Diskin-Posner, Y, Carmieli, R, Weiner, L & Milstein, D 2015, 'O2 Activation by Metal-Ligand Cooperation with IrI PNP Pincer Complexes', Journal of the American Chemical Society, vol. 137, no. 14, pp. 4634-4637. https://doi.org/10.1021/jacs.5b01585
Feller, Moran ; Ben-Ari, Eyal ; Diskin-Posner, Yael ; Carmieli, Raanan ; Weiner, Lev ; Milstein, David. / O2 Activation by Metal-Ligand Cooperation with IrI PNP Pincer Complexes. In: Journal of the American Chemical Society. 2015 ; Vol. 137, No. 14. pp. 4634-4637.
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