One-electron Reduction of 5-deazalumiflavin in Aqueous Solution: A Pulse Radiolysis Study |
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| Authors: | PF Heelis BJ Parsons GO Phillips AJ Swallow |
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| Institution: | 1. Research Division, North East Wales Institute, Deeside, Clwyd, CH5 4BR, U.K.;2. Paterson Institute for Cancer Research, Christie Hospital and Holt Radium Institute, Manchester, M20 9BX, U.K. |
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| Abstract: | SummaryThe one-electron reduction of 5-deazalumiflavin has been studied in aqueous solution in the acidity range H0 = ?1 to pH 13 using the reducing species CO2?, e?aq and (CH3)2?OH radicals. The spectral and other properties of the deazaflavin radicals formed were found to be independent of the reductant used. Four protolytic forms of the radical were distinguished with associated pKa values of 1·3 ± 0·3, 6·0 ± 0·3 and 10·7 ± 0·3. |
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