Structure of the Primary Reduction Product of Thymidine After X Irradiation at 10 K
After X irradiation of thymidine single crystals at 10 K, three base-centered free radicals were trapped and detected by ESR/ENDOR/FSE spectroscopy. One of these was the thymine anion. The data shows that the anion has an extra proton attached to the O4 position; thus the radical is apparently in a neutral charge state. The coupling to the methyl group is small, less than 3 MHz. Upon thermal annealing the anion decayed at about 40 K evidently into a diamagnetic product since no successor was detectible.
Sagstuen, Einar; Hole, Eli O.; Nelson, William H.; and Close, David M.. 1989. Structure of the Primary Reduction Product of Thymidine After X Irradiation at 10 K. Journal of Physical Chemistry. Vol.93(16). 5974-5977. https://doi.org/10.1021/j100353a008 ISSN: 0022-3654