On the kinetics and energetics of one-electron oxidation of 1,3,5-triazines |
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Authors: | Azenha M E D G Burrows H D Canle M Coimbra R Fernández M I García M V Rodrigues A E Santaballa J A Steenken S |
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Institution: | Departamento de Química, Universidade de Coimbra, 3004-535 Coimbra, Portugal. |
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Abstract: | One-electron oxidation of 1,3,5-triazines is observed with both excited uranyl ion (*UO2(2+)) and sulfate radical anion (SO4.-) in aqueous solution, but not with Tl2+, indicating that the standard reduction potentials E degree of 1,3,5-triazine radical cations are = 2.3 +/- 0.1 V vs. NHE, consistent with theoretical calculations; this suggests that if triazines inhibit electron transfer during photosynthesis, they would need to act on the reductive part of the electron transport chain. |
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