Studies on fluid structure and molecular interactions of amides

Fluid structure in amides could be readily studied by dielectric measurements by virtue of the influence of local order and the overall dipole moment. The short-range interactions between permanent dipoles could be described by the Kirkwood-Frohlich correlation factor. In dilute solutions of amides with inert solvents, the interaction between the, solute species among themselves may be given by the modified form of the correlation factor (g') by taking care of solvent-solvent interaction. The dielectric constants of the binary mixtures of acrylamide, acetamide, benzamide and pthalimide in 1,4-dioxan were measured at 298, 308 and 318 K. The results were interpreted in the light of the theory. The nature of interaction was identified in all systems.