DIFFUSION ORDERED SPECTROSCOPY OF ROOM-TEMPERATURE CHLOROALUMINATE MELTS

H-1 diffusion ordered spectroscopy is used to determine diffusion coef ficients for 1-ethyl-3-methylimidazolium chloride (MEICl) in 0.8:1 and 1:1 AlCl3-MEICl melts between 20 and 45 degrees C. All MEI(+) diffusi on coefficients (ring, methyl, and ethyl protons) are virtually identi cal for a particular melt at a given temperature. The MEI(+) diffusion coefficients are viscosity dependent and correlate with conductivitie s, indicating that the transport properties of these melts are determi ned by the molar quantities of salt and not by the properties of the i ndividual ions. C-13 NMR correlation times are used with viscosities a nd microviscosity factors from a ''slip'' model to determine the radiu s of MEI(+).