Metal complexes as antioxidants. 8. A kinetic and product study of the reaction of tertiary alkylperoxy radicals with cobalt(II) acetylacetonate
| Autor: | S. B. Tong, J. A. Howard |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Arrhenius equation
Radical Organic Chemistry chemistry.chemical_element Alcohol General Chemistry Photochemistry Catalysis law.invention Metal symbols.namesake chemistry.chemical_compound Reaction rate constant chemistry law visual_art Polymer chemistry visual_art.visual_art_medium symbols Electron paramagnetic resonance Cobalt Acetophenone |
| Zdroj: | Canadian Journal of Chemistry. 58:1962-1965 |
| ISSN: | 1480-3291 0008-4042 |
| DOI: | 10.1139/v80-311 |
| Popis: | tert-Butylperoxy radicals react rapidly with Co(acac)2 in non-polar solvents and rate constants measured by kinetic electron spin resonance spectroscopy obey the Arrhenius equation log (nk/M−1 s−1) = (8.9 ± 0.7) − (4.7 ± 1.5)/θ, where θ = 2.303RT kcal mol−1 and n is ~ 0.1. Cumylperoxy radicals react with Co(acac)2 to give mainly α-cumyl alcohol and acetophenone. There is no evidence for the formation of "long-lived" alkylperoxy radicals co-ordinated to cobalt (III) or a stable alkylperoxo cobalt(III) complex in these systems. |
| Databáze: | OpenAIRE |
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