CONDUCTANCE STUDIES OF I-AM3BUNI AND NABPH4 AND THE LIMITING IONIC CONDUCTANCE IN WATER+DMF MIXTURES AT 298.15K

Conductance data of triisoamylbutylammonium iodide, i-Am3BuNI (TABI) a nd sodium tetraphenylboride (NaBPh4) in the water+N,N-dimethylformamid e (DMF), In the whole range of the mixed solvent composition at 298.15 K are reported. The data obstained have been analysed with the Fuoss- Justice equation in terms of the limiting molar conductance (Lambda(o) ), ionic association constants (K-A), and parameter R. Ionic associati on constant was found negligible for NaBPh4. From the data obtained he re and those reported earlier, the individual limiting ionic conductiv ity of the Li+, Na+, K+, Rb+, Cs+, Me4N+, Et4N+, Pr4N+, Bu4N+, Hex(4)N (+), i-Am3BuN+, and of Cl-, Br-, I-, Ph4B- has been determined using F uoss-Hirsch assumption. From the values of the individual limiting ion ic conductance obtained in this manner, the values of the Walden produ cts for single ions were also calculated. The results obtained here as well as the values of the limiting molar conductance and Walden produ cts for individual ions have been discussed. (C) 1998 Elsevier Science B.V.