The molecular complexes of a series of electron acceptors of 1,4-benzoquinone (BQ), 2,3,5,6-tetrachloro-1,4-benzoquinone (CHL) and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) with 4-aminoacetanilide (ACE) have been investigated using various spectral techniques. The stoichiometry of the complexes was determined by photometric titration method and was found to be 1:1, in all the cases. The results of equilibrium and kinetic studies were performed and the final interaction products were characterized by FT-IR.