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Issue 7, 1983
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Reaction of radiolytically generated hydroxy radicals with maleic hydrazide

Trygve Eriksen,  Johan Lind  and  Gábor Merényi 

Abstract

Pulse radiolysis has been used to study the reaction of hydroxyl radicals with maleic hydrazide. The rate constants of OH˙ with the neutral hydrazide and its monoanion were found to be (2.9 ± 0.1)× 109 dm3 mol–1 s–1 and (4.2 ± 0.1)× 109 dm3 mol–1 s–1, respectively. In the reaction with the hydrazide monoanion 2/3 of the OH˙ yield diazasemiquinone radicals. The remaining 1/3 of the OH˙ radicals are proposed to yield an OH˙ adduct to the C[double bond, length as m-dash]C bond.

In the reaction with the neutral hydrazide no diazasemiquinone was detected. The radicals generated in this reaction are proposed to be OH˙ adducts. They are found to react with O2 to yield peroxy radicals.

From product analysis it is concluded that O2 reacts with the OH˙ adduct of the monoanion to yield a peroxy radical. The reaction of this peroxy radical with the diazasemiquinone is proposed to yield maleic acid.

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Article type: Paper
DOI: 10.1039/F19837901503
Citation: J. Chem. Soc., Faraday Trans. 1, 1983,79, 1503-1511
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    Reaction of radiolytically generated hydroxy radicals with maleic hydrazide

    T. Eriksen, J. Lind and G. Merényi, J. Chem. Soc., Faraday Trans. 1, 1983, 79, 1503
    DOI: 10.1039/F19837901503

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