Carbon-13 hyperfine splittings in the electron paramagnetic resonance spectra of β-substituted ethyl radicals

DOI	Trouver le DOI : https://doi.org/10.1021/j100544a014
Auteur	Rechercher : Scaiano, J.C.¹; Rechercher : Ingold, K. U.¹
Affiliation du nom	Conseil national de recherches du Canada
Format	Texte, Article
Résumé	Carbon-13 α and β hfsc are reported for a number of 2-substituted ethyl, 2-substituted 1,1-di-tert-butylethyl, and 1,1,2,2-tetrasubstituted ethyl radicals. The 13Cβ hfsc are normally in the range 11-14 G and are not much affected by polar factors, by the conformation of the 2 substituent, or by distortion of the β carbon from tetrahedral geometry. The small 13Cβ hfsc's for Me3SiCH2Ċ(CMe3)2 (9.8 G) and for n-Bu3-SiCH2Ċ(CMe3)2 (9.5 G) are attributed to distortion of the a carbon from planarity due to steric factors. The exceptionally small 13Cβ hfsc for CF3OCH2Ċ(CMe3)2 (6.1 G) is attributed to a homoconjugative interaction between the oxygen and the radical center.
Date de publication	1976
Dans	The Journal of Physical Chemistry 80, nº 3 (1976) : 275–278.
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro NPARC	21276778
Exporter la notice	Exporter en format RIS
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Identificateur de l’enregistrement	623267ee-2939-498b-a271-7abf0c352ac9
Enregistrement créé	2015-10-13
Enregistrement modifié	2020-03-13