ELECTRICAL CONDUCTANCE OF BOLAFORM ELECTROLYTES IN VISCOUS SOLVENTS . MANGANESE(2) M-BENZENEDISULFONATE AND MANGANESE(2) 4,4'-BIPHENYLDISULFONATE IN WATER-ETHYLENE GLYCOL MIXTURES AT 25 DEGREES

The electrical conductances of the Mn(II) salts of m-benzenedisulfonate (BDS2-) and of 4,4′-bi-phenyldisulfonate (BPDS2-) have been measured in mixtures of water-ethylene glycol at 25° up to 0.56 and 0.40 mole fraction of glycol, respectively. The data are interpreted by means of the Fuoss-Onsager 1959 equation for conductance. MnBDS is partially associated in the mixtures, while MnBPDS is substantially unassociated. The aΛ,aj, and aK (for the associated electrolyte) show a fair consistency. It is shown that the BPDS2- ion factional coefficient can be calculated theoretically using the hydrodynamic radius of the benzenesulfonate ion and the Perrin rigid elipsoid model. © 1969, American Chemical Society. All rights reserved.