Kinetic applications of electron paramagnetic resonance spectroscopy. XIX. Persistent cyclohexadienyls and related radicals

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DOIResolve DOI: http://doi.org/10.1021/ja00852a034
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TypeArticle
Journal titleJournal of the American Chemical Society
ISSN0002-7863
Volume97
Issue19
Pages55265531; # of pages: 6
AbstractA variety of persistent radicals of the cyclohexadienyl type have been generated by the addition of certain carbon, silicon, oxygen, and phosphorus centered radicals (e.g., CF3, Cl3Si·, Me3CO·. (CH3CH2O)2P=O) to the following sterically hindered aromatic compounds: 1,3,5-tri-tert-butylbenzene, 2,4,6-lri-terf-butylpyridine, 2,4,6-tri-tert-butyS-λ3-phosphorm, 1,3-di-tert-butylbenzene, and 2,0-di-tert-butylpyridine. The structures of the radicals, which have been deduced from their epr spectra, should assist in the identification of more transient cyclohexadienyls. It is shown that persistence is a consequence of steric protection of the reactive sites in these radicals. Kinetics for decay of some of the radicals are reported.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21276783
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Record identifierc25aada4-371d-4192-b160-a16863771c1b
Record created2015-10-13
Record modified2016-05-09
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