Studies on acoustic properties of some substituted pyrazole, isoxazole and pyrazoline in dioxane at 303 K

2495-2497Ultrasonic velocities and densities of 3-(2-hydroxy-3-bromo-5-methylphenyl)-5-phenyl isoxazole, 1-phenyl-3-(2-hydroxy-3-bromo-5-methylphenyl)-5-(4-methoxyphenyl) pyrazole (L2), 1-phenyl -3-(2-hydroxy-3-bromo-5-methylphenyl)-5-phenyl pyrazoline and l -phenyl-3-(2-hydroxy-3-bromo-5-methylphenyl)-5-( 4-methoxy-phenyl) pyrazoline at different concentration in dioxane have been carried out at 303 K. Different acoustic properties like partial molal volume, adiabatic compressibility, apparent molal compressibility, intermolecular free length , specific acoustic impedance and relative association, etc .. have been determined. These parameters obtained have been interpreted in terms of solute-solvent and solute-solute interactions