Complexes of phosphine oxides with substituted phenols: hydrogen bond characterization based on shifts of PO stretching bands

This is the authors' abstract. We don't add key points for this paper.

solution at room temperature are reported. We show that the PO vibrational frequency changes non-linearly upon hydrogen bond formation and strengthening and that the shift of the PO band could be used for the estimation of hydrogen bond strength in complexes with phosphine oxides. The accuracy of these estimations and the influence of solvation effects on the main characteristics of complexes are discussed.