STUDY OF INTERMOLECULAR INTERACTIONS IN LIQUID BUTANE-1,4-DIOL-WATER MIXTURES BY MEANS OF MEASURING THEIR H-1-NMR SPECTRA AND ANALYSIS OF THEIR PHYSICOCHEMICAL PROPERTIES

The H-1-NMR spectra of butane-1,4-diol (BD-1.4)-water (H2O) mixtures as function of concentration were recorded at 298 K and the spectral parameter, DELTAdelta(BD-1,4-H2O) data were evaluated. From literature values of density (d12), viscosity (eta12) and dielectric permittivities (epsilon12), molar volumes (V12), kinematic viscosities (eta12/d12) and their deviations from ''ideality'' were calculated. Further on, the temperature coefficients of the dielectric permittivity, alpha12 = (1/epsilon12).[depsilon12/d(1/T)], were found. These structural para-meters as functions of concentration suggest the formation of the ''complexes'' (sub-units) of the BD-1,4.2 H2O, 2 BD-1,4-3 H2O and 2 BD-1,4.H2O types.