CONDUCTOMETRIC, VISCOMETRIC, AND SPECTROSCOPIC INVESTIGATIONS ON THE SOLVATION PHENOMENA OF ALKALI-METAL IONS AND ION-PAIRS IN 2-METHOXYETHANOL

Precise measurements on electrical conductances, relative viscosities, and laser-Raman spectra of solutions of some alkali-metal salts in 2-methoxyethanol (ME) have been reported. The conductance data were analyzed by the 1978 Fuoss conductance equation and the viscosity data by the Jones-Dole equation for associated electrolytes as well as by the transition-state treatment. The ionic contribution to the limiting equivalent conductance, viscosity B coefficient, and other thermodynamic parameters have been determined using the ''reference electrolyte'' Bu(4)NBPh(4). The results indicate strong association of all these salts in ME, Among the alkali-metal ions, Na+ ion is found to be most solvated in this medium. Raman spectral data indicate that Li+ and Na+ ions get attached to the ME molecules through the ethereal oxygen atom rather than through the alcoholic oxygen atom of the solvent.