Theoretical, Voltammetric and Thermodynamic study for Cadmium(II)-Tyrosine Complex at 293-313 K

Abstract

The electrochemical properties of the complexation was applied to evaluate different thermodynamic parameters (G, H and S) for the cadmium (II)-tyrosine compound using voltammetric technique. The measurements have been investigated by square wave voltammetry using three electrode system consists of solid (platinum as working and auxiliary electrode) and Ag/AgCl immersed in saturated KCl as a reference electrode using to phosphate buffer solution (pH=7) at the range of temperatures (293-313K). Cadmium has a reduction peak potential at (-0.760 V) which is decrease gradually with an increasing of tyrosine concentrations added. Hartree-Fock calculations at basis set (STO-3G) were applied to evaluate the physic-chemical properties like bond length, bond angle, torsion and the thermodynamic parameters.