화학공학소재연구정보센터
Journal of Physical Chemistry, Vol.99, No.1, 269-273, 1995
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.