Thermodynamic Characteristics of Complexes with a Hydrogen Bond of Bromosubstituted Anilines with Proton Acceptors

In the range 290–330 K, the influence of temperature on the spectral characteristics of the absorption bands is studied for an amino group of bromosubstituted anilines in free molecules and in the hydrogenbond complexes with various proton acceptors. Using the van't Hoff formula, the thermodynamic characteristics of the complexes with the composition 1:1 are determined. It is shown that in these complexes the hydrogen bond turns out to be stronger than in those with the composition 1:2.