Spin trapping of nitrogen dioxide and of radicals generated from nitrous acid
| Autor: | Lucedio Greci, Maria Panagiotaki, Paola Astolfi |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
inorganic chemicals
Nitroxide mediated radical polymerization Nitrous acid Free Radicals Spin trapping Radical Nitrogen Dioxide Electron Spin Resonance Spectroscopy Nitrous Acid General Medicine Nitroso Photochemistry Biochemistry Oxygen chemistry.chemical_compound chemistry Unpaired electron Indoline Nitrogen dioxide Oxidation-Reduction Spin Trapping |
| Zdroj: | Free Radical Research. 39:137-144 |
| ISSN: | 1029-2470 1071-5762 |
| Popis: | Spin trapping of nitrogen dioxide radical by several nitrones has been studied. The reaction results in the formation of persistent acyl nitroxides, after the oxidation of the intermediate spin adducts having an -ONO group on C-2 atom. The intermediate is effectively detected when DEPMPO is used as the spin trap. The reaction between PBN or 5,7-di-tert-butyl-3,3-dimethyl indoline N-oxide with nitrous acid gives the corresponding acyl nitroxide only when oxygen is present in the reaction milieu. On the other hand, nitroso spin traps do not trap *NO2 confirming that the unpaired electron of nitrogen dioxide is localized on the oxygen atom. |
| Databáze: | OpenAIRE |
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