Raman study of aqueous HX solutions (X = F, Cl, Br and I) in both liquid and glassy states

Abstract Raman spectra of aqueous HX solutions (X = F, Cl, Br and I) were measured in botl: the liquid and glassy states. It is shown that the preresonance Raman effect is the major factor for the intensity increase in the Raman spectra with increase in halide concentration. The general spectral features are essentially the same as those for aqueous LiX solutions when the contributions of oxonium ions are excluded. The Raman bands of oxonium ions were observed better in the Raman spectra of glassy HX solutions.