The equilibrium formation of mono- and diperoxovanadium(V) compounds from vanadate esters and hydrogen peroxide in ethanol and dioxane-ethanol mixtures has been studied by electron spectroscopy. The acid-base behavior of the peroxo species identified by the spectroscopic investigation was studied potentiometrically. The results show that in ethanol a mono-peroxo species, which behaves as a weak acid, is formed at low hydrogen peroxide concentrations and that such a species is transformed into a diperoxo compound, which behaves as a strong acid, at higher left bracket H//2O//2 right bracket //0.
Metal catalysis in oxidation by peroxides. Part 10. On the nature of the peroxovanadium(V) species in non-aqueous solvents
SCRIMIN, PAOLO MARIA
1980
Abstract
The equilibrium formation of mono- and diperoxovanadium(V) compounds from vanadate esters and hydrogen peroxide in ethanol and dioxane-ethanol mixtures has been studied by electron spectroscopy. The acid-base behavior of the peroxo species identified by the spectroscopic investigation was studied potentiometrically. The results show that in ethanol a mono-peroxo species, which behaves as a weak acid, is formed at low hydrogen peroxide concentrations and that such a species is transformed into a diperoxo compound, which behaves as a strong acid, at higher left bracket H//2O//2 right bracket //0.
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