Study on intermolecular interactions in liquid acetonitrile - propan-1-ol mixtures by means of measuring their H-1-NMR spectra and analysis of their physicochemical properties

The H-1-NMR spectra of liquid binary mixtures of acetonitrile and propan-1- ol were recorded at 298 K over almost the whole range of the mixed solvent compositions. From these data were found the values of the spectral paramet er, Delta delta>(*) over bar * (ACN-PrOH). The densities (d(12)) and relati ve permittivities (epsilon (12)) of the mixed solvent were measured at 288. 15 K, 293.15 K 298.15 K, 303.15 K and 308.15 K, as well as refractive indic es at 298.15 K. From all these data, the molar volumes (V-m), apparent mola r volumes (V-Phi ,V-i), partial molar volumes (V-i(0)), temperature coeffic ients of relative permittivities (alpha (12)) and their deviations from ide ality were calculated. Additionally, the Kirkwood's correlation factors (g( k)) were found. The values of these properties are discussed in terms of in teractions of acetonitrile with propan-1-ol. (C) 2000 Elsevier Science B.V. All rights reserved.