H2O2 activation with biomimetic non-haem iron complexes and AcOH: Connecting the g = 2.7 EPR signal with a visible chromophore

Olga V. Makhlynets, Williamson N. Oloo, Yurii S. Moroz, Irina G. Belaya, Taryn D. Palluccio, Alexander S. Filatov, Peter Müller, Matthew A. Cranswick, Lawrence Que, Elena V. Rybak-Akimova

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Abstract

Mechanistic studies of H2O2 activation by complexes related to [(BPMEN)FeII(CH3CN)2]2+ with electron-rich pyridines revealed that a new intermediate formed in the presence of acetic acid with a 465 nm visible band can be associated with an unusual g = 2.7 EPR signal. We postulate that this chromophore is an acylperoxoiron(iii) intermediate.

Original languageEnglish (US)
Pages (from-to)645-648
Number of pages4
JournalChemical Communications
Volume50
Issue number6
DOIs
StatePublished - Dec 12 2014

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