Gluconate complexes peroxide with

The reactions of the several manganese gluconate complexes with molecular oxygen and hydrogen peroxide have been studied in terms of stoichiometry and reaction kinetics. Reaction mechanisms are proposed on the basis of the kinetic data. In addition, the thermodynamic and mechanistic characteristics of an ideal model system for photosystem-II are analyzed and evaluated. 

On the basis of these prior electrochemical (62, 63) and kinetic (64) studies and the present results, the reaction stoichiometries for the manganese gluconate complexes with molecular oxygen and hydrogen peroxide can be expressed by a series of reactions. The primary reaction between the Mn(II) complex and molecular oxygen is rapid (Reaction... 

In alkaline media, sodium gluconate (NaGH4) (the oxidation product of D-glucose) stabilizes the Mn Mn and Mn oxidation states. Reaction of the dinuclear Mn gluconate with O2 is first-order with respect to each reactant, yielding the species and HgOg. Further oxidation of the dinuclear Mn complex gives the Mn complex and peroxide ions ... 

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