CONCENTRATED ELECTROLYTE-SOLUTIONS IN ORGANIC-SOLVENTS - THEIR SPECIFIC CONDUCTANCE AND ANALYSIS OF CASTEEL-AMIS EQUATION

The specific conductance of concentrated solutions was measured for th e following systems: LiAsF6 solutions in an equimolar acetonitrile and propylene carbonate mixture at 25-degrees-C; LiAsF6 solutions in an e quimolar gamma-butyrolactone and tetrahydrofuran mixture at 25 and 15- degrees-C; LiClO4 solutions in an equimolar gamma-butyrolactone and te trahydrofuran mixture at 25-degrees-C; LiAsF6 and LiClO4 solutions in an equimolar gamma-butyrolactone and 2-methyl-tetrahydrofuran mixture at 15 and 25-degrees-C; LiClO4 solutions in an approximately equimolar gamma-butyrolactone and 1,3-dioxolane mixture at 25-degrees-C. The co nductance data for these systems were analysed in terms of the semi-em pirical Casteel-Amis equation. The equation parameters c(max), kappa(m ax), a and b were evaluated. The properties of the solvents (electrica l permittivity and viscosity) were measured. The solvent molecule mini mized energies were calculated using the ALCHEMY program.