Quantum chemical analysis of the thermodynamics of 2D cluster formation of n-carboxylic acids at the air/water interface

The thermodynamic characteristics of the cluster formation for fatty acids with the general formula of nondissociated n-carboxylic acids C(sub n)H(sub 2n+1)COOH with n = 5-15 are studied. The contributions of the CH2 groups to the thermodynamic characteristics of alcohols and acids are the same and the differences in the formation of clusters by these substances are attributed to the differences in the structure and interactions of relevant functional groups.