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Methane Activation by Metal‐Free Radical Cations: Experimental Insight into the Reaction Intermediate
Author(s) -
de Petris Giulia,
Troiani Anna,
Rosi Marzio,
Angelini Giancarlo,
Ursini Ornella
Publication year - 2009
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200802581
Subject(s) - methyl radical , chemistry , methane , metal , photochemistry , hydrogen atom , methanol , radical , hydrogen , mass spectrometry , radical ion , inorganic chemistry , reaction mechanism , methyl group , ion , organic chemistry , catalysis , group (periodic table) , chromatography
A precise jab to methane : The SO 2 .+ radical cation (see figure) effectively activates CH 4 at room temperature through a [H 3 C . ⋅⋅⋅HOSO + ] methyl intermediate isolated in the gas phase by mass spectrometry. Methanol and ionized methyl hydrogen sulfoxylate, CH 3 OSOH .+ , are formed by selective, direct attack of the incipient methyl radical at the O atom of the intermediate. The reaction shows radical and charge effects in the activation of methane by metal‐free radical cations.

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