Single crystal ESR study of x‐irradiated thiophosphate O,O,O‐triester of methyl β‐D‐ribopyranoside: Electron capture by the thiophosphate moiety

J.H.H. Hamerlinck, P. Schipper, H.M. Buck

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

X-irradiation of a single crystal of thiophosphate O,O,O-triester of methyl ß-D-ribopyranoside at 77 K produces a s phosphoranyl radical anion (2) by electron capture among secondary radicals resulting from bond scission. The ESR parameters of (2) in correlation with the x-ray analysis of its precursor establish a TBP structure with the unpaired electron in apical position. The results suggest that in irradiated nucleic acid polymers, electrons can be trapped by phosphorus giving rise to a phosphorus-centered radical which subsequently induces bond break by a or ß scission generating thermodynamically more stable sugar and base radicals.
Original languageEnglish
Pages (from-to)2161-2164
Number of pages4
JournalJournal of Chemical Physics
Volume76
Issue number5
DOIs
Publication statusPublished - 1982

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