Oxidation of Water by Cerium(IV) Compounds in the Presence of Trinuclear Ruthenium Complexes


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Abstract

The oxidation of water by Ce(IV) compounds in the presence of ruthenium complex (NH3)5Ru–O–Ru(NH3)4–O–Ru(NH3)5Cl6 is studied. It is shown that the complex is a catalyst of water oxidation if one-electron oxidizing species Ce4+ are used. Four units of the indicated ruthenium complex then organize themselves into a reactive dodecanuclear cluster. It is established that the formation of bi-, tetra-, and polynuclear cerium clusters in the reacting system is accompanied by the four oxygen atoms in the catalyst molecule being replaced with 4NH3 ligands, resulting in a different catalytic system for biomimetic water oxidation.

About the authors

Z. M. Dzhabieva

Institute of Problems of Chemical Physics, Russian Academy of Sciences

Email: timur@cat.icp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432

V. A. Dobrygin

Institute of Problems of Chemical Physics, Russian Academy of Sciences

Email: timur@cat.icp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432

T. S. Dzhabiev

Institute of Problems of Chemical Physics, Russian Academy of Sciences

Author for correspondence.
Email: timur@cat.icp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432

L. I. Tkachenko

Institute of Problems of Chemical Physics, Russian Academy of Sciences

Email: timur@cat.icp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432

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