TY - JOUR
T1 - O2 Activation by Metal-Ligand Cooperation with IrI PNP Pincer Complexes
AU - Feller, Moran
AU - Ben-Ari, Eyal
AU - Diskin-Posner, Yael
AU - Carmieli, Raanan
AU - Weiner, Lev
AU - Milstein, David
PY - 2015/4/15
Y1 - 2015/4/15
N2 - 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.
AB - 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.
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U2 - 10.1021/jacs.5b01585
DO - 10.1021/jacs.5b01585
M3 - Article
VL - 137
SP - 4634
EP - 4637
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 14
ER -