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 a s function of concentration were recorded at 298 K and the spectral pa rameter, DELTAdelta(BD-1,4-H2O) data were evaluated. From literature v alues of density (d12), viscosity (eta12) and dielectric permittivitie s (epsilon12), molar volumes (V12), kinematic viscosities (eta12/d12) and their deviations from ''ideality'' were calculated. Further on, th e temperature coefficients of the dielectric permittivity, alpha12 = ( 1/epsilon12).[depsilon12/d(1/T)], were found. These structural para-me ters as functions of concentration suggest the formation of the ''comp lexes'' (sub-units) of the BD-1,4.2 H2O, 2 BD-1,4-3 H2O and 2 BD-1,4.H 2O types.