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Comparison of the Reactivity of Nonheme Iron(IV)–Oxo versus Iron(IV)–Imido Complexes: Which is the Better Oxidant?^†

1. Anil Kumar Vardhaman¹, 
2. Prasenjit Barman¹, 
3. Suresh Kumar², 
4. Dr. Chivukula V. Sastri^1,*, 
5. Dr. Devesh Kumar^2,*, 
6. Dr. Sam P. de Visser^3,*

Article first published online: 25 SEP 2013

DOI: 10.1002/anie.201305370

Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords: 

CH activation;

enzyme models;

imido ligands;

iron;

sulfoxidation

Which is better? The first detailed study into a comparison of the reactivity of nonheme iron(IV)–imido versus nonheme iron(IV)-oxo intermediates with substrates is presented. The iron(IV)–imido variant reacts with sulfides five times faster than iron(IV)–oxo, whereas the reverse trend is observed for hydrogen atom abstraction. These observed trends are analyzed and explained.

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