H₂O₂ Oxidation by Fe^III-OOH Intermediates and Its Effect on Catalytic Efficiency.

ABSTRACT: The oxidation of the C-H and C=C bonds of hydrocarbons with H₂O₂ catalyzed by non-heme iron complexes with pentadentate ligands is widely accepted as involving a reactive Fe^IV=O species such as [(N4Py)Fe^IV=O]²⁺ formed by homolytic cleavage of the O-O bond of an Fe^III-OOH intermediate (where N4Py is 1,1-bis(pyridin-2-yl)-N,N-bis(pyridin-2-ylmethyl)methanamine). We show here that at low H₂O₂ concentrations the Fe^IV=O species formed is detectable in methanol. Furthermore, we show that the decomposition of H₂O₂ to water and O₂ is an important competing pathway that limits efficiency in the terminal oxidant and indeed dominates reactivity except where

SUBMITTER: Chen J 

PROVIDER: S-EPMC6179451 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature