Thermodynamics of complexation of aqueous 18-crown-6 with sodium ion: Apparent molar volumes and apparent molar heat capacities of aqueous (18-crown-6 + sodium chloride) at temperatures (278.15 to 393.15)K, at molalities (0.02 to 0.30)mol·kg−1, and at the pressure 0.35 MPa Ziemer, S.; Niederhauser, T.; Woolley, E.; The Journal of Chemical Thermodynamics 2005, 37, 1071-1084