4.8 Article

Observation of Radical Rebound in a Mononuclear Nonheme Iron Model Complex

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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 140, 期 12, 页码 4191-4194

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AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b12707

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  1. NIH [GM119374]
  2. University of Otago
  3. Faculty of Science, University of Melbourne

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A nonheme iron(III) terminal methoxide complex, [Fe-III(N3PyO2Ph)(OCH3)]ClO4, was synthesized. Reaction of this complex with the triphenylmethyl radical (Ph3C center dot) leads to formation of Ph3COCH3 and the one-electron-reduced iron(II) center, as seen by UV-vis, EPR, H-1 NMR, and Mossbauer spectroscopy. These results indicate that homolytic Fe-O bond cleavage occurs together with C-O bond formation, providing a direct observation of the radical rebound process proposed for both biological and synthetic nonheme iron centers.

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