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

doi:10.1021/jacs.5b01585

O₂ Activation by Metal-Ligand Cooperation with Ir^I PNP Pincer Complexes

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

Weizmann Institute of Science, Israel

Research output: Contribution to journal › Article

29 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 language	English
Pages (from-to)	4634-4637
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	137
Issue number	14
DOIs	https://doi.org/10.1021/jacs.5b01585
Publication status	Published - 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

Feller, M., Ben-Ari, E., Diskin-Posner, Y., Carmieli, R., Weiner, L., & Milstein, D. (2015). O₂ Activation by Metal-Ligand Cooperation with Ir^I PNP Pincer Complexes. Journal of the American Chemical Society, 137(14), 4634-4637. https://doi.org/10.1021/jacs.5b01585

O₂ Activation by Metal-Ligand Cooperation with Ir^I 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 journal › Article

Feller, M, Ben-Ari, E, Diskin-Posner, Y, Carmieli, R, Weiner, L & Milstein, D 2015, 'O₂ Activation by Metal-Ligand Cooperation with Ir^I PNP Pincer Complexes', Journal of the American Chemical Society, vol. 137, no. 14, pp. 4634-4637. https://doi.org/10.1021/jacs.5b01585

Feller M, Ben-Ari E, Diskin-Posner Y, Carmieli R, Weiner L, Milstein D. O₂ Activation by Metal-Ligand Cooperation with Ir^I PNP Pincer Complexes. Journal of the American Chemical Society. 2015 Apr 15;137(14):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 Ir^I PNP Pincer Complexes. In: Journal of the American Chemical Society. 2015 ; Vol. 137, No. 14. pp. 4634-4637.

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10.1021/jacs.5b01585