Acoustical studies of some Schiff bases in 1,4-dioxane and dimethylformamide at 318.15 K

From experimental data of density, viscosity and ultrasonic velocity, the various acoustical properties, such as specific impedance (Z), isentropic compressibility (K-s), Rao's molar sound function (R-m), the van der Waals constant (b), molar compressibility (W), intermolecular free length (L-f), relaxation strength (r), internal pressure (pi), free volume (V-f), solvation number (S-n) etc., were calculated for three Schiff bases in 1,4-dioxane and dimethylformamide (DMF) at 318.15 K. The results are interpreted in terms of molecular interactions occurring in the solutions.