Topological studies of molecular interactions in binary and ternary liquid mixtures containing lactams and isomeric chlorotoluenes (original) (raw)

The densities, ρ, speeds of sound, u of 1-methylpyrrolidin-2-one (i) + pyrrolidin-2-one (j); 1-methylpyrrolidin-2-one or pyrrolidin-2-one (i) + o-or m-or p-chlorotoluene (j) binary and ρijk, uijk data of 1-methylpyrrolidin-2-one (i) + pyrrolidin-2-one (j) + o-or m-or p-chlorotoluene (k) ternary mixtures have measured as a composition at 293.15, 298.15, 303.15, 308.15 K at atmospheric pressure. From the experimental densities and speeds of sound data excess molar volumes, V E or (V E)ijk, excess isentropic compressibilities, κ S E or (κ S E) ijk of binary and ternary mixtures respectively have been computed. Excess properties of the various binary and ternary mixtures have been related to Redlich-Kister equation and the binary and ternary parameters along with corresponding deviations are calculated. The results have also been analyzed in terms of Graph theory. It has been observed that V E or (V E)ijk; κ S E or (κ S E) ijk values predicted by Graph theory compare well with their experimental values. The IR studies also lend support to the proposed molecular entities and interactions in mixtures.

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