Summary
The electrochemical behaviour of mononuclear and dinuclear complexes of dioxouranium(VI) (or uranyl), nickel(II) and copper(II) ions with the ethylenediamine Schiff base derivate ofo-acetoacetylphenol, H4aapen, has been studied in dimethyl sulfoxide solvent both at platinum and mercury electrodes.
In the mononuclear complexes the metal ion can occupy either the N2O2 compartment or the O2O2 compartment. In the dinuclear complexes, both homodinuclear and heterodinuclear species can be obtained. This paper deals with the following derivates; nickel and uranyl mononuclear complexes, with the nickel(II) ion coordinated in the inner N2O2 compartment and with the uranyl ion coordinated in the outer O2O2 compartment respectively; uranyl-nickel and uranyl-copper heterodinuclear complexes, with the uranyl ion in the O2O2 site; copper and nickel homodinuclear complexes. The electrode mechanism has been investigated by cyclic voltammetry, chronoamperometry and controlled potential coulometry. For dinuclear complexes, formal potentials are also discussed in terms of the stabilisation of electrogenerated mixed-valence compounds.
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Zanello, P., Vigato, P.A., Casellato, U. et al. Electrochemistry of mononuclear, homo- and hetero-binuclear complexes of a schiff base compartmental ligand. Transition Met Chem 8, 294–298 (1983). https://doi.org/10.1007/BF00620874
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DOI: https://doi.org/10.1007/BF00620874