Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Comparison between the gas-phase and the solution reaction of the nitrate radical and methylarenes |
| Abstract | The reaction between the nitrate radical and methylarenes has been studied in the gas phase. Benzaldehydes, benzyl nitrates, benzylic alcohols, and nitro derivatives have been found as reaction products. The reaction of an intermediate alkoxy radical with oxygen or nitrogen dioxide is suggested as the source of aldehydes and nitrates. The formation of nitro derivatives in the gas-phase reaction is of relevance to the environment. Kinetic isotope effect measurements favor the hypothesis of H-atom abstraction as the rate-determining step. The reaction of methylarenes with photogenerated nitrate radical in solution gives the same reaction products, but the reaction seems to occur via a rate-determining electron-transfer step, involving a radical cation in the transition state. |
| Source | Environmental science & technology 27, pp. 1659–1664 |
| Keywords | nitrate radicaltroposheric chemistry |
| Journal | Environmental science & technology |
| Editor | American Chemical Society,, Easton, Pa., Stati Uniti d'America |
| Year | 1993 |
| Type | Articolo in rivista |
| Authors | Chiodini G., Rindone B., Cariati F., Polesello S. (1), Restelli G., Hjorth J.(2) |
| Text | 233493 1993 nitrate radical troposheric chemistry Comparison between the gas phase and the solution reaction of the nitrate radical and methylarenes Chiodini G., Rindone B., Cariati F., Polesello S. 1 , Restelli G., Hjorth J. 2 1 Universita degli studi di Milano 2 JRC, Ispra VA The reaction between the nitrate radical and methylarenes has been studied in the gas phase. Benzaldehydes, benzyl nitrates, benzylic alcohols, and nitro derivatives have been found as reaction products. The reaction of an intermediate alkoxy radical with oxygen or nitrogen dioxide is suggested as the source of aldehydes and nitrates. The formation of nitro derivatives in the gas phase reaction is of relevance to the environment. Kinetic isotope effect measurements favor the hypothesis of H atom abstraction as the rate determining step. The reaction of methylarenes with photogenerated nitrate radical in solution gives the same reaction products, but the reaction seems to occur via a rate determining electron transfer step, involving a radical cation in the transition state. 27 articolo 93ChiodiniEST93.pdf Articolo in rivista American Chemical Society, 0013 936X Environmental science technology Environmental science technology Environ. sci. technol. Environmental science technology. ES T Environmental science and technology stefano.polesello POLESELLO STEFANO |