engleski

Formation of free radicals during the oxidation of N-methylhydroxyurea with dioxovanadium(V) ions

Unlike the oxidation of hydroxyurea with dioxovanadium(V) ions, which proceeds through the formation of a single free radical, oxidation of N-methylhydroxyurea is characterized by consecutive formation of two oxygen-based free radicals, as recorded by EPR spectroscopy. Although the consumption of overall five V(V) ions per N-methylhydroxyurea molecule has been determined, the formation of NO, NO2 or NO3 was not observed. These results are in accordance with a previous suggestion that nitric oxide transfer requires an unsubstituted acylhydroxylamine group.

N-methylhydroxyurea; dioxovanadium(V) ions; oxidation; free radicals

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