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- Title
Oxidation kinetics of Zn-5,15 bis( ortho-methoxyphenyl)-2,3,7,8,12,13,17,18-octamethylporphyrin with organic peroxides in o-xylene.
- Authors
Simonova, O.; Zaitseva, S.; Koifman, O.
- Abstract
With the purpose of further investigation of the effect of the steric strain of the porphyrin macroring in metal porphyrins on their redox properties, kinetics of oxidation of Zn-5,15 bis( ortho-methoxyphenyl)-2,3,7,8,12,13.17,18-octamethylporphyrin with organic peroxides in o-xylene at 295°C were studied spectrophotometrically to show that this process leads to complete destruction of the complex. Kinetic characteristics ( k ef, k v) of the process were evaluated. The structure of the zinc porphyrin and its oxidation intermediates were obtained by quantum-chemical calculations. Steris strains in the metal prophyrin macroring were revealed and shown to enhance in the course of the reaction. An effect of the degree of deformational strain on the oxidation rate was noted.
- Subjects
OXIDATION; CHEMICAL reactions; PEROXIDES; XYLENE; PORPHYRINS; STERIC hindrance; SPECTROPHOTOMETRY
- Publication
Russian Journal of General Chemistry, 2008, Vol 78, Issue 6, p1260
- ISSN
1070-3632
- Publication type
Article
- DOI
10.1134/S1070363208060285