Interactions occur between metal ions and organic molecules in the human body, and it is interesting to understand how this complexation happens and how stable it is in an aqueous environment. In this work, we studied the interaction between zinc (II) and the diethyldithiocarbamate ligand (Et2DTC−), widely used in biological studies, evaluating the electrochemical and spectroscopic behavior of the complex formed in aqueous solution. The Zn2+ showed a reduction peak at − 1.14 V, in a quasi-reversible system with a mixed control process, using a glassy carbon electrode. The ET2DTC− showed a peak reduction at − 0.86 V in an irreversible process, controlled by the diffusion of the species to the electrode surface. The Zn-Et2DTC complex presented an electrode process controlled by the adsorption of the species. Data show a stoichiometry of 1:2 Zn/Et2DTC and a formation constant of 7.8 × 108 dm6 mol−2. Spectroscopic measurements in the UV–Vis region showed a band at 277 nm that referred to the complex formed, indicating the interaction by the sulfur atom in a rapid reaction. These studies contribute significantly to understanding the time of action of this type of ligand in a biological system.
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da Silva, V.A.S., de Lima, A.L.C., Codognoto, L. et al. Electrochemical and spectroscopy studies of the interaction between the Zn2+ and the diethylditiocarbamate ligand (Et2DTC−). Transit Met Chem 46, 291–297 (2021). https://doi.org/10.1007/s11243-020-00445-1