4.7 Article

Physicochemical studies of synthesized biscoumarin [3,3-(phenylmethylene)bis(4-hydroxy-2H-chromen-2-one)] in DMSO and various percentage compositions of ethanol in DMSO from 288.15 to 313.15 K

Journal

JOURNAL OF MOLECULAR LIQUIDS
Volume 333, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.molliq.2021.115891

Keywords

Biscoumarin; Ethanol; DMSO; Apparent molar volume; Apparent molar isentropic compression; Jones-Dole coefficients

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Physical properties of 3,3-(phenylmethylene)bis(4-hydroxy-2H-chromen-2-one) in DMSO and solvent media with varying concentrations of ethanol have been studied, with derived parameters determined and interactions between solute-solute and solute-solvent discussed.
Density, speed of sound and viscosity for varying concentrations of 3,3-(phenylmethylene)bis(4-hydroxy-2H-chromen-2-one) in DMSO and solvent media containing (5, 10, 15, 20, 25)% w/w of ethanol in DMSO have been measured. These properties have been deliberated over a wide range of temperatures ranging from 288.15 K to 313.15 K and at p=0.1 MPa. Fromthe experimental data, different derived parameters like apparent molar volume (V-phi), limiting apparent molar volume (V-phi(0)), apparent molar isentropic compression (K-phi,K-s), limiting apparent isentropic compression (K-phi,s(0)), transfer volumes, limiting apparent molar expansibility (E-phi(0)), coefficient of thermal expansion (alpha), Hepler's constant, viscosity coefficients (A and B), viscosity B-coefficient of transfer and dB/dT values have been determined. Further, the results have been expounded in terms of solute-solute and solute-solvent interactions and structure-making ability of solute molecules in different solvent systems of study. (C) 2021 Elsevier B.V. All rights reserved.

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