Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 137, Issue 14, Pages 4634-4637Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b01585
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- European Research Council [246837]
- Israel Science Foundation
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A unique mode of molecular oxygen activation, involving metal-ligand cooperation, is described. Ir pincer complexes [((BuPNP)-Bu-t)Ir(R)] (R = C6H5 (1), CH2COCH3 (2)) react with O-2 to form the dearomatized hydroxo complexes [((BuPNP)-Bu-t*)Ir(R)(OH)] ((t)BuPNP* = deprotonated (BuPNP)-Bu-t 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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