Liquid phase nitrogen endor in nitroxide radicals

Electron-nuclear double resonance (ENDOR) signals have been observed from nitrogen nuclei of several nitroxide radicals in the liquid phase. The rf enhancement factor, which increases the effective radio frequency field at the nucleus by a factor of 21 in the present case, makes these observations p...

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Bibliographic Details
Published inChemical physics letters Vol. 6; no. 6; pp. 637 - 640
Main Authors Leniart, D.S., Vedrine, J.C., Hyde, J.S.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.09.1970
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Summary:Electron-nuclear double resonance (ENDOR) signals have been observed from nitrogen nuclei of several nitroxide radicals in the liquid phase. The rf enhancement factor, which increases the effective radio frequency field at the nucleus by a factor of 21 in the present case, makes these observations possible. Cross relaxation, arising from non-secular terms of the dipolar spectral density, is the dominant Δ m I = 1 relaxation mechanism. The data are sufficiently precise that dynamic second order shifts of the observed ENDOR transitions must be considered.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(70)85246-0