Electron paramagnetic resonance studies of riboflavin and its derivatives. II. The alloxazine semiquinones in acid

Electron paramagnetic resonance studies of riboflavin and its derivatives. II. The alloxazine semiquinones in acid

EPR spectra of several alloxazine semiquinones in concentrated HCl and DCl solutions have been obtained. These have been interpreted in terms of the distribution of the unpaired electron in the radicals. The results have been compared with those obtained with the closely related isoalloxazines and w...

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Veröffentlicht in:Archives of biochemistry and biophysics 1963-11, Vol.103 (2), p.244-248
Hauptverfasser: Guzzo, Anthony V., Tollin, Gordon
Format: Artikel
Sprache:eng
Schlagworte:
Chemical Phenomena
Chemistry
Electron Spin Resonance Spectroscopy
Flavins
Heterocyclic Compounds
Old Medline
Riboflavin
Spectrum Analysis
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Zusammenfassung:EPR spectra of several alloxazine semiquinones in concentrated HCl and DCl solutions have been obtained. These have been interpreted in terms of the distribution of the unpaired electron in the radicals. The results have been compared with those obtained with the closely related isoalloxazines and with the results of Hückel M.O. calculations.
ISSN:0003-9861
1096-0384
DOI:10.1016/0003-9861(63)90401-6