Apparent molal volume and viscosity values for a new synthesized diazoted resorcin[4]arene in DMSO at several temperatures

作者：Maldonado Mauricio^*; Sanabria Edilma; Batanero Belen; Angel Esteso Miguel

来源：Journal of Molecular Liquids, 2017, 231: 142-148.

DOI：10.1016/j.molliq.2017.01.093

• Diazoted resorcin[4]arenes p-(3-carboxyphenylazo)propylresorcin[4]arene (APRA)
• DMSO
• Apparent molal volumes
• Viscosities

A new diazoted resorcin[4]arene was synthesized and characterized by spectral techniques. The densities and viscosities of their solutions in dimethylsulfoxide (DMSO) were measured at temperatures between 293.15 and 313.15 K, over a range of concentrations from (0.0058 to 0.023) (mol kg(-1)) at atmospheric pressure. By using these experimental data, some thermodynamic functions were derived to contribute to the understanding of the intermolecular interactions taking place in solution. The results obtained from the volumes study indicate the presence of strong solute-solute interactions. The study of viscosities suggests the existence of strong solute solvent interactions. The above result was confirmed by calculating the Gibbs free energies of activation, per mole, of viscous flow of both the solvent and the solute. The flow parameter values found indicate an activated state less organized compared with the ground state and a process driven by the enthalpy.

• 出版日期2017-4