期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 141, 期 24, 页码 9516-9520出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.9b04215
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资金
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division [DE-SC0019179]
- U.S. Department of Energy (DOE) [DE-SC0019179] Funding Source: U.S. Department of Energy (DOE)
Oxygen reduction is a critical half reaction in renewable fuel cell development and a key step in the development of aerobic oxidation reactions. Herein, we report rapid two-electron O-2 reduction by a d(0) Zr-IV center with an appended redox-active Co-I site serving as an electron reservoir. The early/late heterobimetallic Zr/Co complex (THF)Zr(MesNP(i)Pr(2))(3)(CoCNBu)-Bu-t (1) reacts readily with O-2 and O atom transfer reagents to generate reactive oxygenated species including terminal peroxo and oxo complexes, (O-2)Zr(MesNP(i)Pr(2))(3)(CoCNBu)-Bu-t (2) and O Zr(MesNP(i)Pr(2))(3)(CoCNBu)-Bu-t (3). The bimetallic Zr/Co complex provides a new cooperative synthetic pathway to promote multielectron redox processes such as oxygen reduction, with each metal playing a distinct role as a substrate binding site or redox mediator.
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