Abstract
Ionic equilibria in the LiBF4-dimethyl sulfoxide (DMSO) system were studied by Raman spectroscopy at 50°C at salt concentrations of 0.05–0.25 mole fractions. The spectral signals of hydrogen bonds between the DMSO molecules and the fluoroborate ions were found. The concentrations of the monomer and dimer DMSO molecules and DMSO molecules in the solvation sphere of the lithium cation; free solvent molecules and those in the solvation sphere of the fluoroborate ion; free anions, ion pairs separated by the solvent, and contact ion pairs were determined.
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