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Published on: February 20, 2020
Intermediates in photochemistry of Fe(III) complexes with carboxylic acids in aqueous solutions
Evgeni M Glebov1, Ivan P Pozdnyakov, Vjacheslav P Grivin
1Institute of Chemical Kinetics and Combustion, 3 Institutskaya St., 630090, Novosibirsk, Russian Federation. glebov@kinetics.nsc.ru
Abstract:
The primary processes in the photochemistry of Fe(III) complexes with carboxylic acids (glyoxalic, tartaric, pyruvic and lactic) were studied by means of laser flash photolysis. The inner-sphere electron transfer with the formation of Fe(II) complex and an escape of an organic radical to the solution bulk was shown to be a minor channel of the photolysis. The main channel was proposed to be the formation of a long-lived radical complex [Fe(II)···˙OOC-R](2+). Spectral and kinetic parameters of the radical complexes are determined.
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