The influence of cations on the formation of high oxidation state compounds of manganese in molten salts

Abstract

The reactions of various oxo compounds of manganese were examined in several melts and peroxide- and/or superoxide-melt solutions. Whilst MnO₄^3- appears to be the most stable species in NaNO₂ and Na₂O₂-NaNO₂ solutions, the green MnO₄^2- ion is favoured in KNO₂ melts and also in nitrate melts in which K⁺ predominates over Na⁺.