Thermodynamic and spectroscopic evidence in binary mixtures of nonelectrolytes

Nigam, R.K. and Aggarwal, S., 1986. Thermodynamic and spectroscopic evidence in binary mixtures of nonelectrolytes. Fluid Phase Equilibria, 26: 181–200.Molar excess enthalpies H^E_m of 1,2-dichloroethane (1)+pyridine (2), + α-picoline (2),+n-hexane (2), +n-heptane (2), n-heptane (1)+pyridine (2), +α-picoline (2), +γ-picoline (2), aniline (1)+pyridine 92), +α-picoline (2) and +γ-picoline (2) mixtures have been measured calorimetrically at 298.15 and 308.15 K.The data have been examined in terms of the Lacombe and Sanchez theory and the graph theoretical approach. It was found that these were described better by the graph theoretical approach. The NMR studies on 1,2-dichloroethane (1)+α-picoline (2), aniline (1)+pyridine (2) and aniline (1)+γ-picoline (2) mixtures have also been used to lend credence to the nature and extent of interaction in these mixtures.