Abstract
The technique of melting alkali hydroxides between alkali halide plates has been used to obtain the near infrared absorption spectra of LiOH, LiOD, NaOH, NaOD, KOH, and KOD. Complicated combination band structure is observed in NaOH similar to that observed previously in LiOH, Ca(OH)2 and Mg(OH)2. The deuterated spectra of LiOH and NaOH indicate that both translational and librational (or rotational) modes couple to the fundamental OH— ion vibrations. Fundamental frequencies of 3611±4 cm—1 and 2654±2 cm—1 are observed for KOH and KOD, respectively. Reactions of the alkali hydroxides with certain alkali halides are observed.
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