alexa Abstract | Ultrasonic speed and related acoustical parameters of symmetric double Schiff bases solutions at 308.15K

Journal of Chemical and Pharmaceutical Research
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Thedensity (ρ), viscosity (η) and ultrasonic speed (U) (2MHz) of DMF solutions of symmetric double Schiff bases were determined at 308.15K.Various acoustical parameters such as specific acoustical impedance (Z), adiabatic compressibility ( k a), Rao’s molar sound function (Rm), Vander Waals constant (b), internal pressure (π), free volume (Vf), intermolecular free path length (Lf), classical absorption coefficient (α/f2)Cl), and viscous relaxation time (τ)were determined usingρ, η and U data. Linear increase of U, Z, R, b, Vf, (α/f2)Cl, τ and linear decrease of k a, Lf and π with increasing concentration of Schiff bases supported presence of strong molecular interactions in the solutions and hence solvophilic nature of the Schiff bases. Further solvation number (Sn) also supported solvophilic nature of Schiff bases. The position and nature of substituent also affected molecular interactions.

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Author(s): B J Gangani and P H Parsania


Symmetric double Schiff bases, Ultrasonic speed, Acoustical studies, Solvation number, Molecular interaction in DMF, Schiff bases

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