{"title":"Reactions of 1, 1-diphenyl-2-picryl-hydrazyl with NO2, Cl2 and F2","authors":"L. Gille, U. Prösch, R. Stoesser","doi":"10.1016/1359-0197(92)90210-7","DOIUrl":null,"url":null,"abstract":"<div><p>The reactions of DPPH with Cl<sub>2</sub>, NO<sub>2</sub> and F<sub>2</sub> were studied. In the <em>para</em>-phenyl position substituted diphenylpicrylhydrazines were formed. Besides this, the reaction of halogens led to products which were nitro-substituted in the <em>para</em>-phenyl position. Thus, it was shown that the reactions of halogens and halogen radicals with DPPH include a substitution at the picryl group of DPPH and its derivatives under liberation of NO<sub>2</sub>.</p><p>By ESR <em>in situ</em> spectroscopy and computational analysis of spectra, nitro-, dinitro-, fluoro- and difluoro-diphenylpicrylhydrazyls were identified as transient intermediates. In the formation of these species nitrogen dioxide and fluorine act as oxidants for the corresponding substituted hydrazines.</p></div>","PeriodicalId":14262,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry","volume":"40 6","pages":"Pages 461-468"},"PeriodicalIF":0.0000,"publicationDate":"1992-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/1359-0197(92)90210-7","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/1359019792902107","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
The reactions of DPPH with Cl2, NO2 and F2 were studied. In the para-phenyl position substituted diphenylpicrylhydrazines were formed. Besides this, the reaction of halogens led to products which were nitro-substituted in the para-phenyl position. Thus, it was shown that the reactions of halogens and halogen radicals with DPPH include a substitution at the picryl group of DPPH and its derivatives under liberation of NO2.
By ESR in situ spectroscopy and computational analysis of spectra, nitro-, dinitro-, fluoro- and difluoro-diphenylpicrylhydrazyls were identified as transient intermediates. In the formation of these species nitrogen dioxide and fluorine act as oxidants for the corresponding substituted hydrazines.
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