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.

人体中的金属离子和有机分子之间发生相互作用，了解这种络合如何发生以及在水性环境中的稳定性很有趣。在这项工作中，我们研究了锌（II）和二乙基二配体（ET之间的相互作用₂ DTC ^- ），广泛用于生物学研究，评估形成的水溶液中的复合物的电化学和光谱行为。在使用混合碳控制的准可逆系统中，使用玻璃碳电极，Zn ²⁺在-1.14 V处显示出还原峰。该ET ₂ DTC ^-在物质的扩散到电极表面的控制下，在不可逆的过程中显示出在-0.86 V处的峰降低。Zn-Et ₂ DTC络合物提供了一种受物质吸附控制的电极过程。数据显示化学计量比为1：2 Zn / Et ₂ DTC，形成常数为7.8×10 ⁸  dm ⁶  mol ^-2。UV-Vis区域的光谱测量结果表明，在277 nm处有一条谱带，该谱带指的是形成的络合物，表明在快速反应中硫原子的相互作用。这些研究极大地有助于理解这种配体在生物系统中的作用时间。