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ISSN 1998-9539

Redox Reactions of μ-Carbido Diiron(IV) Tetra-4-tert-butylphthalocyaninate with Organic Peroxides

Olga R. Simonova,a@ Svetlana V. Zaitseva,a Sergey A. Zdanovich,a and Oskar I. Koifmana,b
aKrestov Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia
bIvanovo State University of Chemistry and Technology, 153000 Ivanovo, Russia
@Corresponding author E-mail: ors@isc-ras.ru
 
DOI: 10.6060/mhc180173s
Macroheterocycles 2018 11(1) 29-34
 

The interaction of μ-carbido diiron(IV) tetra-4-tert-phthalocyaninate with tert-butylhydroperoxide and tert-butylperoxide was studied spectrophotometrically. The kinetic characteristics were obtained and a possible mechanism of redox interaction, influenced by the nature of the peroxide, was proposed. The reaction is redox multi-step process, where the coordination of peroxide molecule on the iron center with subsequent homolytic O-O bond cleavage follows after one-electron oxidation of the complex up to π-cation radical. The resulting π-cation radical species can be easily reduced in the presence of imidazole up to a neutral form. The catalytic activity of the oxidized species of the dimeric iron(IV) complex in the lycopene oxidation reaction is shown.

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