VIBRATIONAL SPECTROSCOPIC STUDIES OF POTENTIAL AMIDIC EXTRACTANTS FORLANTHANIDES AND ACTINIDES IN NUCLEAR WASTE TREATMENT

The preparation of some novel amidic extractants based on malonamides, glutaramides and succinamides and the vibrational spectroscopy of the ir complexes with thorium (IV), neodymium (III) and uranium (VI) is re ported. These extractants have potential for use in nuclear fuels repr ocessing plants. Vibrational spectroscopy shows the presence of nitrat e groups in these metal complexes in monodentate or bidentate coordina tion. The succinamides and glutaramides were demonstrated to be equall y successful in the formation and subsequent extraction of uranium (VI ) complexes from aqueous nitric acid solutions and the malonamides wer e found to be less effective in accomplishing this.