Zavel'skii V. O. RussiaChernogolovka Institute of Physiologically Active Agents of RAS, 1, Severny Drive, Chernogolovka, Moscow Region, 142432 Author's articles Property characteristics of electrolyte systems of aluminium chloride – thionilchloride – cosolvent as defined by the MMR spectroscopy Investigation of aluminum chloride and lithium tetrachloroaluminate solutions in mixed solvent thiony] chloride – propylene carbonate means of the NMR spectroscopy