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Author Alfassi, Z. B. ♦ Khaikin, G. I. ♦ Johnson, R. D. III ♦ Neta, P.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CHEMISTRY ♦ RADICALS ♦ SYNTHESIS ♦ CHEMICAL REACTIONS ♦ OXIDATION ♦ CHEMICAL REACTION KINETICS ♦ IRRADIATION ♦ ABSORPTION SPECTRA ♦ METHYL RADICALS ♦ PEROXY RADICALS ♦ AQUEOUS SOLUTIONS ♦ OXIDIZERS
Abstract The formylmethyl radical, {sup .}CH{sub 2}CHO, is known to act as an oxidant. For comparison, the chlorinated analogues, {sup .}CCl{sub 2}CHO and {sup .}CCl{sub 2}CClO, were produced in irradiated aqueous solutions and their oxidation reactions studied. The {sup .}CCl{sub 2}CHO radical is an oxidizing species, which reacts with ascorbate, ABTS{sup 2-} [2,2`-azinobis(3-ethylbenzothiazoline-6-sulfonate ion)], and phenolate ions somewhat more slowly than {sup .}CH{sub 2}CHO. In contrast, {sup .}CCl{sub 2}CClO reacts with the same compounds much more rapidly than {sup .}CH{sub 2}CHO. All three formylmethyl radicals react with O{sub 2} to yield peroxyl radicals. The peroxyl radicals derived from the chlorinated formylmethyl are stronger oxidants than their parent species, but the peroxyl radical derived from the unchlorinated formylmethyl is a weaker oxidant than its parent species. Peroxyl radicals were also produced by the reaction of e{sub aq}{sup -} with CCl{sub 3}CH{sub 2}OH and with chloral hydrate in aerated solutions. These radicals, {sup .}OOCCl{sub 2}CH{sub 2}OH and {sup .}OOCCl{sub 2}CH(OH){sub 2}, are highly reactive oxidants. 31 refs., 2 figs., 3 tabs.
ISSN 00223654
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-09-26
Publisher Place United States
Journal Journal of Physical Chemistry
Volume Number 100
Issue Number 39


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