Revision of the αH₂ value for N,N-dialkylhydroxylamines based on kinetic and spectroscopic measurements

DOI	Trouver le DOI : https://doi.org/10.1039/b102247o
Auteur	Rechercher : Astolfi, Paola; Rechercher : Greci, Lucedio; Rechercher : Paul, Thomas¹; Rechercher : Ingold, Keith U.¹
Affiliation	Conseil national de recherches du Canada. Institut Steacie des sciences moléculaires du CNRC
Format	Texte, Article
Résumé	Kinetic solvent effects on hydrogen-atom abstraction from N,N-diethylhydroxylamine and N,N-dibenzylhydroxylamine by the 2,2-diphenyl-1-picrylhydrazyl radical (DPPH˙) indicated that these compounds are much weaker hydrogen-bond donors than implied by the currently accepted αH₂ value of 0.453. Lower αH₂ values were also obtained by monitoring 1 ∶ 1 complex formation with two strong hydrogen-bond acceptors, HMPA and DMSO, in tetrachloromethane using IR spectroscopy. It is concluded that the αH₂ value for sterically non-hindered N,N-dialkylhydroxylamines should be revised downward to 0.29.
Date de publication	2001
Dans	Journal of the Chemical Society, Perkin Transactions 2, nº 9 (2001) : 1631–1633.
Langue	anglais
Numéro NPARC	12338156
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Identificateur de l’enregistrement	b54a2aa9-38d6-4a99-ad19-0794c9d8c743
Enregistrement créé	2009-09-10
Enregistrement modifié	2020-03-27