دورية
Comparative Study of Ionization of Benzidine and Its Derivatives by Free Electron Transfer and One-Electron Oxidation
| العنوان: | Comparative Study of Ionization of Benzidine and Its Derivatives by Free Electron Transfer and One-Electron Oxidation |
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| المؤلفون: | A. Jacob, Jasmine, Naumov, Sergej, Biswas, Nandita, Mukherjee, Tulsi, Kapoor, Sudhir |
| المصدر: | The Journal of Physical Chemistry - Part C; December 2007, Vol. 111 Issue: 49 p18397-18404, 8p |
| مستخلص: | The bimolecular electron transfer from primary aromatic amines to the parent radical cation of a nonpolar solvent results in the synchronous formation of an amine radical cation as well as an anilino radical. The interesting observation is that the yield of the anilino radical is not very significant. The upper limit for the direct formation of anilino radical is about 20%. This could be due to additional delocalization of electrons essentially reducing destabilization of the cation radical in their twisted form. The results were supported by pulse radiolysis reactions carried out in aqueous solution. Benzidine and o-tolidine reactions were carried out at pH 7 and 13 with various radicals, •OH, O•-, and •N3, to determine the yields of radical cations and anilino radicals. The molar absorptivity calculated in aqueous solution was used to determine the actual yield in nonpolar solvent after free electron transfer (FET). The above results were supported by quantum chemical calculations. |
| قاعدة البيانات: | Supplemental Index |
| تدمد: | 19327447 19327455 |
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| DOI: | 10.1021/jp075585z |