Title

Structure of the Primary Reduction Product of Thymidine After X Irradiation at 10 K

Document Type

Article

Publication Date

1-1-1989

Description

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.

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