Conductimetric studies in ketonic solvents. Part V. Quaternary ammonium salts in ethyl methyl ketone

Conductances in ethyl methyl ketone at 25° are reported for a series of quaternary alkylammonium salts including the tetra-n-alkylammonium iodides and bromides from methyl up to n-octyl. Single-ion conductances have been evaluated by use of n-butyltri-isopentylammonium tetraphenylboride as the reference electrolyte. Hydrodynamic radii give no evidence of solvation of the cations while association parameters indicate anion penetration of the cations in association.