Ultrasonic and spectroscopic studies on hydrogen bonded complexes of aromatic amine and aryl ketones in n-hexane at 303.15Â K

► The study reports interactions of aromatic ketones with amine in non-polar media. ► Formation of hydrogen bonded complexes is observed by acoustic and optical methods. ► Formation constants obtained both by acoustic and optical methods show similar trend. ► Structure of ketones and amine determine the values of stability constant of complex.