The R AMAN spectra of solid polycristalline samples of peroxides of alkali metals, alkaline earths, and two group II transition metals have been measured. The OO stretch vibration produces an intense band in the expected frequency region of 750 to 850 cm −1 . The observation of a weak band at 815 cm −1 indicates the existence of BeO 2 . Frequency shifts in the hydrates of alkali and alkaline earth peroxides support different water association.
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Eysel et al. (1975) studied this question.
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