Charge transfer complexes of 2,4-dinitroplıenol with aniline derivatives are prepared from ethanol or benzene Solutions then investigated by ir, 'H nmr and electronic absorption spectros- copy. The type of charge transfer complexes, whether being of the salt or molecular compounds type, was found to depend on the basicity of the amine and solvent used. The spectral changes due to the formation of each type of complexes are given; the results obtained are compared with those of picric acid with aniline derivatives.