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)
https://www.scipress.com/ILCPA.36.50
Abstract:
    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.
Keywords:
    Acoustical Parameters, Density, DMSO, Molecular Interactions, Ultrasonic Velocity, Viscosity