The Raman spectra of AlCl3-LiCl-dimethylsulfone mixtures with differen
t molar compositions have been recorded as a solid (300 K) and as a me
lt (400 K). In any case, only AlCl4- ion lines at 120, 179, and 347 cm
(-1) were observed; we were unable to detect any other chloroaluminate
species. Furthermore, some bands assigned to the Al[(CH3)(2)SO2](3+)(
3) octahedral coordination compound are evidence for a high AlCl3 cont
ent.