ESR of a Nitroxide Radical and Its Radical Pair in Irradiated 1-Hydroxyxanthine Single Crystals

Single crystals of 1-hydroxyxanthine have been X-irradiated at 77 K and studied by ESR at 300 K. A nitroxide radical formed by abstraction of a hydrogen atom at N1is the primary species formed by the radiation. A nitrogen hyperfine tensor with principal values of 0.8, 2.6, and 13.6 G and a g tensor...

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Veröffentlicht in:	Radiat. Res.; (United States) 1984-03, Vol.97 (3), p.443-451
Hauptverfasser:	Sogabe, Kunihisa, Alexander, Chester
Format:	Artikel
Sprache:	eng
Schlagworte:	400600 - Radiation Chemistry AROMATICS Atoms AZAARENES Biological and medical sciences CHEMISTRY Crystal structure Crystals Cyclic N-Oxides ELECTROMAGNETIC RADIATION Electron paramagnetic resonance ELECTRON SPECTRA ELECTRON SPIN RESONANCE Electron Spin Resonance Spectroscopy Free Radicals Fundamental and applied biological sciences. Psychology HETEROCYCLIC COMPOUNDS Hydrogen-Ion Concentration IONIZING RADIATIONS MAGNETIC RESONANCE Molecular biophysics Molecules Nitrogen ORGANIC COMPOUNDS ORGANIC NITROGEN COMPOUNDS ORGANIC OXYGEN COMPOUNDS PURINES RADIATION CHEMISTRY RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY Radiation-biomolecule interaction RADIATIONS RADICALS Radiochemistry RADIOINDUCTION RESONANCE Single crystals Space life sciences SPECTRA Tensors URIC ACID X RADIATION XANTHINES Xanthines - radiation effects
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