Infra-red spectra of some alkali metal uranates

Abstract Infra-red spectra (900-240 cm−1) of twelve alkali metal uranates are presented. Uranyl stretching vibrations of the monouranates occur between 700 and 800 cm−1, and of the diuranates between 750 and 850 cm−1. The infra-red results are correlated with X-ray diffraction data, and uranyl bond lengths of the compounds have been calculated.