ABSORPTION SPECTRA OF URANIUM(III) AND URANIUM(IV) IN DClO4 SOLUTION1

The absorption spectra of U(III) and U(IV) in DClO/sub 4/ were observed at 0.2 to 2.6 mu . Solutions of a pure valence state were prepared and maintained by electrolytic reduction in a combination electrolysis-absorption cell. Several new bands were discovered in the ultraviolet and near infrared regions, and their positions as well as those of the other bands in the spectra are compared with the energy levels calculated from theory. (auth)