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Production of Hydrogen Peroxide from Dioxygen and Hydroxylamine or Hydrazine catalysed by Manganese Complexes

DOI: 10.1039/DT9920001051

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1051 - 1058 (1992)

Update date:2022-08-11

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Authors:

Sheriff, Tippu S.Sheriff, Tippu S.

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Article abstract of DOI:10.1039/DT9920001051

Manganese(II) catecholate complexes efficiently catalyse the production of H2O2 from dioxygen in the range pH 7.5-8.6 using hydroxylamine or hydrazine as substrates: concentrations of hydrogen peroxide >0.2 mol dm-3 and turnover numbers /II> > 104 can be obtained.The rate of production and yields are very sensitive to the electronic effect of the substituents on the catecholate ring with the best results being achieved using 4,5-dihydroxybenzene-1,3-disulfonate.Deuteriation studies (using ND2OD) indicated that the reduction of O2 occurs via an electron trans fer from the substrate and a mechanism is proposed whereby both O2 and thec substarte become bound to manganese and the electron transfer is mediated through the manganese catecholate complex.

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