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

Chem Commun (Camb). 2014 Jan 21;50(6):645-8. doi: 10.1039/c3cc47632d. Epub 2013 Nov 29.

Abstract

Mechanistic studies of H2O2 activation by complexes related to [(BPMEN)Fe(II)(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.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Acylation
  • Biomimetic Materials / chemistry*
  • Coordination Complexes / chemistry*
  • Electron Spin Resonance Spectroscopy
  • Heme / chemistry
  • Hydrogen Peroxide / chemistry*
  • Iron / chemistry*
  • Luminescent Measurements
  • Models, Biological

Substances

  • Coordination Complexes
  • Heme
  • Hydrogen Peroxide
  • Iron