Infrared Study of Hydrogen Bond Complexes Involving 1,3-Dimethyl, 2-imidazolidinone and Hydroxylic Derivatives

Abstract

The hydrogen bond complexes between 1,3-dimethyl, 2-imidazolidinone (DMI) and phenols are investigated in carbontetrachloride and in 1,2-dichloroethane (DCE) by infrared spectrometry. The thermodynamic and spectroscopic data show that DMI possesses a good proton acceptor ability. The thermodynamic parameters are greater in CCl₄ than in DCE while the Δ _VOH values shown a reverse trend. The shift of the ^VS OH stretch in the DMI-water complex is also greater in DCE than in carbontetrachloride. The differences are discussed in terms of specific solvation effects and of different polarity of the two solvents.