Electron Spin Resonance Study on Anionic Flavin Free Radicals.
- 1 January 1964
- journal article
- research article
- Published by Danish Chemical Society in Acta Chemica Scandinavica
- Vol. 18 (6) , 1437-1453
- https://doi.org/10.3891/acta.chem.scand.18-1437
Abstract
The anionic lumiflavin radical was studied in detail by ESR and nitrogen-15 as well as deuterium substitutions have been carried out. The free radicals of the flavin coenzymes and a number of isoalloxazine derivatives have also been investigated. A hyperfine coupling scheme of the lumiflavin radical is derived where N(9), N(10), CH3 (7), CH3(9), and H(5 or 8) are involved. The hyperfine couplings are interpreted in terms of spin densities and comparison is made with available quantum chemical calculations. The effect of the N(9)-substituted upon the resolution of the spectra is examined and discussed.This publication has 4 references indexed in Scilit:
- Electron paramagnetic resonance studies of riboflavin and its derivatives. I. The isoalloxazine semiquinones in acidArchives of Biochemistry and Biophysics, 1963
- Contributions to quantum biology. I. Mobile electronic characteristics of riboflavin radicalsBulletin of Mathematical Biology, 1961
- Metabolite Inhibitors. I. 6,7-Dimethyl-9-formylmethylisoalloxazine, 6,7-Dimethyl-9-(2'-hydroxyethyl)-isoalloxazine and Derivatives1Journal of the American Chemical Society, 1956
- The Synthesis of 6-Chloro-7-methyl-9-(1'-D-ribityl)-isoalloxazine and 6-Methyl-7-chloro-9-(1'-D-ribityl)-isoalloxazine1Journal of the American Chemical Society, 1954