The reaction between the peroxide VO(η2-O2)(pyridine-2-carboxylate)·2H2O and FeII aq is not a Fenton-like reaction

Ariela Burg, Ella Fastovesky, Dror Shamir, Haya Kornweitz, Dan Meyerstein

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The reduction of VO(η2-O2)(pyridine-2-carboxylate) by Fe(H2O)6 2+ proceeds via formation of the transient complex (pyridine-2-carboxylate)(O)VV(μ-η2: η2-O2)FeII(H2O)3 2+ that is transformed via intramolecular electron transfer into (pyridine-2-carboxylate)(O)VIV(μ-η2: η2-O2)FeIII(H2O)3 2+. The latter transient reacts with another Fe(H2O)6 2+ to yield 2Fe(H2O)6 3+ + VVO(OH)(pyridine-2-carboxylate)+. These results point out that: (1) VV does not activate the η2 bound peroxide toward the Fenton-like reaction. In this aspect, VV differs from FeIII in (H2O)5Fe–OOH2+ and (2) transients of the type LmMn(μ-η2: η2-O2)M′L″l have to be considered in the reductions of complexes of η2-bound peroxides.

Original languageEnglish
Pages (from-to)1722-1729
Number of pages8
JournalJournal of Coordination Chemistry
Volume69
Issue number11-13
DOIs
StatePublished - 2 Jul 2016

Keywords

  • DFT
  • Fenton reaction
  • Kinetics and mechanism
  • Vanadium
  • μ-η: η-O binuclear complexes

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