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Factors affecting the relative and absolute rates of ß-scission of alkoxythiocarbonyl radicals and alkoxycarbonyl radicals
Abstract : High-level ab initio calculations demonstrate that alkoxythiocarbonyl radicals (ROC.=S) undergo ß-scission significantly faster than alkoxycarbonyl radicals (ROC.=O) despite having similar exothermicities. The relatively low reactivity of the ROC.=O radicals is reduced further by electron-donating R groups and arises from the large polarization of the C.-O bonds of the reactant radicals. The results suggest that the generation of alkyl radicals from ROC.=S should be particularly efficient when the R group bears radical-stabilizing and/or electron-accepting groups, such as CN. © 2006 American Chemical Society.
https://hal-polytechnique.archives-ouvertes.fr/hal-00951308
Contributor : Denis Roura Connect in order to contact the contributor
Submitted on : Monday, March 3, 2014 - 3:04:18 PM
Last modification on : Thursday, December 9, 2021 - 2:26:02 PM
Contributor : Denis Roura Connect in order to contact the contributor
Submitted on : Monday, March 3, 2014 - 3:04:18 PM
Last modification on : Thursday, December 9, 2021 - 2:26:02 PM
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