Correlation of the O-H⋯N bonds energy with the excess compression of binary mixtures of pyridine and its methyl derivatives with methanol and water

► 1:1 Complexes of the amines with water and methanol due to O-H⋯N bonds. ► Positive correlation between the association energies and excess compressions. ► Excess compressions of aqueous systems enhanced due to the clustering of complexes. ► Hydrophobic hydration in dilute aqueous solutions.