Study of Solute-Solvent Interaction of Chlorosubstituted Pyrazoles with Cu (II) and Tb (III) and Dioxane-Water at Various Temperatures

摘要

The solute-solvent interactions of complexes of chloro substituted pyrazole with Cu (II) and Tb (III) metal ions as a function of temperature has been studied by measuring density and ultrasonic velocity at different temperatures. The values of density and ultrasonic velocity have been used to determine the adiabatic compressibility β_s, apparent molal volume ?_v, apparent adiabatic compressibility ?_k, intermolecular free length L_f, relative association R_A and acoustic impendence Z . The obtained results from the acoustic parameters show the significant interaction between the complex and solvent.