Abstract
ABSTRACT Partial oxidation of manganese(II) and Partial reduction of manganese(III) in acetylacetonate complexes occured in liqudd-liquid systems containing carbon tetrachloride and an aqueous sodium perchlorate solution buffered by sodium hydrogenecarbonate solution equilibrium was assumed to be established after a two phase agitation for several days. Howeve, when the manganese(II) complex was dissolved in air-saturated nonpolar organic solvents such as carbon tetrachloride benzene, and chloroform, it was quantitatively oxidized to the trivalent complex within one hour and the rate was dependent on both the oxygen and ligand. The rate was lower when the solvent was polar and also when an adduct-forming ligand with the bis-chelate such as trioctylphosphine oxide was added into carbon tetrachloride.
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