Raman spectra of single†crystal Cd(BrO<inf>3</inf>)<inf>2</inf> · 2H<inf>2</inf>O and polycrystalline Cd(BrO<inf>3</inf>)<inf>2</inf> · 2D<inf>2</inf>O

Raman spectra of single‐crystal Cd(BrO3)2 · 2H2O and polycrystalline hydrate, deuterate and partially deuterated samples at 90 and 298 K were investigated in detail. Polycrystalline hydrate, deuterate and partially deuterated samples were examined at 90 and 298 K in the OH and OD internal region by infrared spectroscopy in order to explore the structural environment of water of hydration. Vibrations in the OH stretching region were attributed to (H2O)I and (H2O)II type molecules. Single‐crystal Raman spectra were analysed and most of the normal modes were assigned. Copyright © 1987 John Wiley & Sons, Ltd.