THE INTERNAL STRUCTURES OF LIQUID DIMETHYLSULFOXIDE ACETONE MIXTURES

The H-1-NMR spectra of the liquid binary mixtures, dimethylsulfoxide-a cetone, were recorded at 298 K within nearly the whole range of mixed solvent compositions. From these data the values of the spectral param eter, Delta delta(DMSO-A) were found. The viscosities (eta(12)) and su rface tensions (gamma(12)) of the mixed solvents were measured at 298. 15 K. From all these new parent data, the values of molar volumes (V-1 2) and their deviations from ''ideality'' were calculated. Additionall y, the values of the temperature coeficients of dielectric permittivit y, alpha(12), were found. These structural parameters as functions of concentration suggest the formation of the most stable ''complex'' (su b-unit) of the DMSO . A type.