The specific conductance of p y r i d i n i u m HCI, N -m e t h y l p y r i d i n i u m chloride, N -m e t h y l p y r i d i n i u m bromide, 4-methylpyridinium bromide, and p y r i d i n i u m bromide, was measured as a function of temperature. The NMR spectra of the first three fused salts were also measured over the same temperature ranges. Correlations between conductance data and spectral data were found to exist.The experimental results indicate that the "friction" between the chloride and pyridinium ion is greater than between the bromide and the p y r i d i n i u m ion. The positive charge of the pyridinium ion seems to be localized on the nitrogen. In the pyridinium HC1 system the labile proton is probably contributing to the conductivity.
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