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1 Polish Journal of Chemistry

1 2006

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Voltammetric Study of Interaction of Copper with Some Methyl-Substituted Ethylenediimine Compounds Using Nonlinear Least-Squares-Excel-Solver

Fotouhi L., Bahmanpour T., Ghasemi J., Dehghanpour S., Heravi M.

Polish Journal of Chemistry

2006

Vol. 80, nr 3

483-489

The complex formation of Cu2+ with some recently synthesized methyl-substituted ethylenediimines in binary dimethylformamide-ethanol mixtures was studied by differential pulse voltammetry. The stoichiometry and the stability of the complexes were determined by monitoring the increasing complex peak current against the ligand concentration using nonlinear least squares-Excel solver. In all studied cases, it was found that the stability of the resulting 1:1 complex decreases by increasing the amount of ethanol in the binary mixtures. The observed stability order is discussed in terms of the solvent binary mixtures and the nature of the substituted ethylenediimine structure.