Infrared Spectra of Alkali Metal Azide Crystals

摘要

The infrared spectra of CsN3, RbN3, KN3, and NaN3crystals have been recorded at room temperature and at liquidhyphen;nitrogen temperature. Considerable anharmonicity in the fundamentals of N3minus;and combinations with lattice modes has been observed. Splitting of the doubly degenerate ngr;2has been observed. Discrepancies between the several reported values of ngr;3are discussed.