Cu(II)-catalyzed oscillatory chemical reactions |
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Authors: | Miklós Orbán |
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Institution: | (1) Institute of Inorganic and Analytical Chemistry, L. Eötvös University, P.O. Box 123, H-1443 Budapest, Hungary |
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Abstract: | The role of copper ions in the copper-catalyzed chemical reactions is discussed. It is pointed out that copper ions can induce oscillatory behavior in many systems for the following reasons: (1) Copper cations can exist in three oxidation states (+1, +2 and +3); (2) Copper cations can form precipitates and stable complexes with a large number of reactants and intermediates; (3) Copper ions can participate in both oxidation and reduction processes, due to the surprisingly large range of redox potentials exhibited by the Cu2+/Cu+ and Cu3+/Cu2+ couples (known redox potentials span from 0.1 to 1.8 V, depending on the counter-ion or ligand present). |
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