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Ambient temperature melts were derived from trimethylsulfonium bromide (TMSuBr) and AlBr3, AlCl3, or HBr. The aluminum halide melts have low-wavelength UV cutoffs and single-band 1H NMR spectra. In the TMSuBr–HBr system, the formation of HBr2− and likely existence of H2Br3− are indicated by 1H NMR and IR spectra. Conductivity and viscosity data indicate stronger TMSu+–anion interactions than those between substituted imidazolium and halide anions. A Grotthus mechanism may operate for conduction in TMSuBr:HBr melts.
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Ma et al. (1995) studied this question.
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