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

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.

Automated summary

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.