Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 23, Issue 43, Pages 10465-10472Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201701986
Keywords
aerobic methane formation; demethylation; highvalent iron; methanogenesis; nonheme iron
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Funding
- German Science Foundation [DFG KE 884/8-1]
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A range of nonheme oxo-iron(IV) model systems with tetra-or pentadentate ligands is shown to produce methane from methionine and other thioethers. This model reaction for the natural aerobic production of methane is shown to proceed via two sulfoxidation steps involving the oxo-iron( IV) complexes, with a bifurcation in the second step that either produces the sulfone or leads to demethylation with similar probabilities. In the presence of O-2, the resulting methyl radicals produce methanol and formate or, in an O(2)depleted environment, lead to formation of methane.
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