| Issue |
J. Chim. Phys.
Volume 92, 1995
|
|
|---|---|---|
| Page(s) | 97 - 103 | |
| DOI | https://doi.org/10.1051/jcp/1995920097 | |
| Published online | 29 May 2017 | |
An EPR study of the radicals issued from nitrocatechols and nitrohydroquinone: a new method of production of nitroaromatic anion radicals
Laboratoire de chimie organique physique, URA CNRS 351, 59655 Villeneuve-d'Ascq, France.
Nitrocatechols and nitrohydroquinone have been treated by means of sodium borohydride in oxygenated aqueous solution in a pH range between 9 to 12, and the EPR spectra have been recorded. In all cases, the nitroaromatic anion radical is observed. At pH=12, a semiquinonic radical is observed in the case of nitrohydroquinone and 4- nitrocatechol.
Résumé
Les nitrocatéchols et la nitrohydroquinone ont été traitées par le borohydrure de sodium en solution basique oxygénée à des pH allant de 9 à 12 et leur spectre RPE a été enregistré. Dans tous les cas le radical anion nitroaromatique est observé. A pH 12 un radical semiquinonique a été observé dans le cas de la nitrohydroquinone et du 4- nitrocatéchol.
Key words: Nitroaromatic anion radicals / semiquinonic radicals / nitrodihydroxybenzene / EPR
© Elsevier, Paris, 1995