Effect of Temperature and Solvent on Molecular Interactions of 1, 2, 4-Triazole Derivative

The present work describes the synthesis, characterization, thermal analysis and thermo-acoustical parameters of 5-(3-methoxyphenyl)-1-phenyl-2-((m-tolylamino)methyl)-1H-1, 2, 4-triazole-3(2H)-thione(MM4_a). The thermal behavior of MM4_a was studied by thermal techniques and associated kinetic parameters were evaluated according to Freeman-Carroll method. The density (ρ), viscosity (η) and ultrasonic sound velocity(U) of 1, 4-Dioxane and solutions of MM4_a (0.1-0.01 M)were investigated at three different temperature (303, 308 and 313) K and atmospheric pressure. Some acoustical parameters such asadiabatic compressibility (κs), intermolecular free path length (L_f), Rao's molar sound function (R_m), Van der Waals constant (b), internal pressure (π), free volume (V_f) and solvation number (S_n), entropy of activation (ΔS^#), pre-exponential factor (A), enthalpy of activation (ΔH^#) and Gibbs free energy of the decomposition (ΔG^#) were calculated. The results obtained were interpreted in terms of solute-solvent and solute-solute interactions.