Abstract
The oxidation of complexes of manganese(II) with 1,10-phenanthroline by bromate was studied. It was shown that the curve for the dependence of the induction period of the autocatalytic process on the 1,10-phenanthroline concentration passes through a maximum. During the induction period, both the manganese(II) complexes and 1,10-phenanthroline react with bromide ions. The formation of these ionic associates leads to a decrease in the concentration of free bromide, and correspondingly to a decrease in the duration of the induction period. A supposition was advanced that complexes of manganese(II) formed with phenanthroline also catalyze the redox transformations of bromine oxide compounds; complexes with a coordinately unsaturated sphere have the highest catalytic activity.
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