Some physicochemical parameters such as density, refractive index and conductance of some newly synthesized pyrimidine derivatives have been measured in N, N-dimethyl formamide, chloroform and methanol at 308.15K. It is observed that these studied parameters depend on the solvent and structure of compounds, which may be due to different type of interactions.
Ultrasonic velocity, density and viscosity of Lacosamide were measured in various alcohols at 298.15 K. From these measured experimental data, various acoustical parameters such as Specific acoustical impedance (Z), Adiabatic compressibility (кs), Intermolecular free path length (Lf), Rao’s molar sound function (Rm), Molar compressibility (W), van der Waals constant (b), Solvation number (Sn), Thermal conductivity (Kbm), Relaxation strength (r) have been calculated for understanding the molecular interactions occurring in the solution.
La velocidad ultrasónica, la densidad y la viscosidad de soluciones de algunas chalconas sintéticas se midieron en N, N-dimetilformamida y cloroformo a diferentes temperaturas (desde 298,15 hasta 318,15 K). A partir de estos datos experimentales, se calcularon diversos parámetros acústicos tales como la impedancia específica (Z), la compresibilidad adiabática (ks), la función de sonido molar de Rao (Rm), la longitud de trayecto libre intermolecular (Lf), el número de solvatación (Sn) y la presión interna (Π), para comprender las interacciones moleculares en las soluciones estudiadas. Los resultados se interpretan en términos de las posibles interacciones moleculares que ocurren en las soluciones.
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