Studies on systems of salts and mixed solvents. XXXIII. On the solvation of cations (Li+, Mg2+, Al3+) in dimethylsulphoxide‐water mixtures (Raman spectroscopic investigations into concentrated electrolyte solutions)

Abstract

AbstractStarting from pure DMSO (DMSO‐d6) the solvent‐solvent interactions detectable in the aqueous systems were investigated by means of vSO and vCS.On the basis of the results obtained the solvation behaviour of cations (Li+, Mg2+, Al3+) in DMSO (DMSO‐d6)H2O mixtures is discussed. In spite of the prevailing solvent‐solvent interactions direct cation‐DMSO (DMSO‐d6) interactions can still be proved in solutions rich in water, which suggest preferred cation solvation by the organic molecule.