| DOI | Trouver le DOI : https://doi.org/10.1021/jo951782v |
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| Auteur | Rechercher : Avila, D.V.1; Rechercher : Ingold, K. U.1; Rechercher : Lusztyk, J.1; Rechercher : Dolbier Jr., W.R.; Rechercher : Pan, H.-Q. |
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| Affiliation | - Conseil national de recherches du Canada. Institut Steacie des sciences moléculaires du CNRC
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| Format | Texte, Article |
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| Sujet | alkyl radicals; freon 113; laser flash photolysis; perfluorination; radical addition; synergistic effect; alkylation; fluorination; fluorine; halogenation; olefins; photolysis; styrene; table lookup; rate constants |
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| Résumé | Laser flash photolysis has been used to determine the absolute rate constants for addition of several partially fluorinated n-alkyl radicals to three styrenes at 25°C in Freon 113. Fluorination at the γ-position (RCF2CH2CH2•) gives radicals with essentially the same reactivity as non-fluorinated n-alkyls. The RCH 2CF2CH2• and RCH2CH 2CHF• radicals are both about three times as reactive as RCF2CH2CH2•, but the RCH 2CH2CF2• radical is ca. five to six times rather than ca. three times as reactive as RCH2CH2CHF•. Similarly, the perfluorinated radical CF3CF2CF 2• is much more reactive than would be expected on the basis of the reactivities of the RCH2CF2CH2• and RCH2CH2CF2• radicals. Thus, perfluorinated n-alkyl radicals are very considerably more reactive than would be predicted from the individual effects of α, β-, and γ-fluorination. |
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| Date de publication | 1996 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21276520 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 002c7259-a273-46cd-a9fd-b38b3d07f213 |
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| Enregistrement créé | 2015-10-13 |
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| Enregistrement modifié | 2020-03-20 |
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