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Inorg Chem. 2011 Jul 18;50(14):6408-10. doi: 10.1021/ic2007414. Epub 2011 Jun 14.

Reversible (de)protonation-induced valence inversion in mixed-valent diiron(II,III) complexes.

Author information

1
Laboratoire de Chimie et Biologie des Métaux-pmb UMR 5249, UJF-Grenoble 1/CEA-DSV-iRTSV/CNRS, Grenoble F-38054, France.

Abstract

The coupling of electron and proton transfers is currently under intense scrutiny. This Communication reports a new kind of proton-coupled electron transfer within a homodinuclear first-row transition-metal complex. The triply-bridged complex [Fe(III)(μ-OPh)(μ(2)-mpdp)Fe(II)(NH(2)Bn)] (1; mpdp(2-) = m-phenylenedipropionate) bearing a terminal aminobenzyl ligand can be reversibly deprotonated to the anilinate complex 2 whose core [Fe(II)(μ-OPh)(μ(2)-mpdp)Fe(III)(NHBn)] features an inversion of the iron valences. This observation is supported by a combination of UV-visible, (1)H NMR, and Mössbauer spectroscopic studies.

PMID:
21671656
DOI:
10.1021/ic2007414
[Indexed for MEDLINE]

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