Tert-Butyl hydroperoxide and hydrogen peroxide readily react with the radical cation derived from 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). The reaction is inhibited by ABTS and protons, and can be interpreted in terms of a mechanism comprising a partially reversible electron transfer ROOH+ABTS•+↔ ROO · + ABTS + H+ (1) followed by the self-reactions of the hydroperoxide derived radicals and reactions between them and another ABTS derived radical. A complete kinetic analysis allows an evaluation of the rate constant for reaction (1). A value of 0.2 M−1 s−1 was obtained for both compounds. The back reaction of process (1) is more relevant when tert-butyl hydroperoxide is employed.
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Aliaga et al. (1998) studied this question.
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