C. Gopi, N. Santhi, Acoustical Studies of Some Synthesized Schiff Base Derivatives in Dimethylsulphoxide at 303.15 K, by Ultrasonic Velocity Measurement, ILCPA Volume 36, International Letters of Chemistry, Physics and Astronomy (Volume 36)
    The density, viscosity and sound velocity of five Schiff bases (1-5) derivatives in DMSO solutions have been studied at 303.15 K over a wide range of concentration. From these experimental data, some acoustical parameters such as Molar volume (V<sub>m</sub>), Specific Acoustic Impedance (Z), Adiabatic compressibility (β<sub>ad</sub>), Intermolecular Free Length (L<sub>f</sub>), Rao’s Constant (R), Molar compressibility (W), Relaxation time(τ), van der Waals constant (b), Relaxation strength (r), Relative association (R<sub>A</sub>), Isothermal compressibility ( ) , Isothermal expansion co-efficient (α) ,Free volume (V<sub>f</sub>) and Internal pressure (π<sub>i</sub>) and Ultrasonic attenuation (α/f²) have been evaluated. A fairly good correlation between a given parameter and concentration is observed. The results are interpreted in terms of molecular interactions like solvent-solvent, solvent-solute and solute-solute interactions.
    Acoustical Parameters, Density, DMSO, Molecular Interactions, Ultrasonic Velocity, Viscosity