SOLVENT EXTRACTED AND EXTRACTION CHROMATOGRAPHICALLY ADSORBED COMPLEXES OF BIFUNCTIONAL EXTRACTANTS WITH F-ELEMENTS

The IR spectra of the solvent extracted and extraction chromatographic ally adsorbed complexes of HNO3, Nd(III), Th(IV) and U(VI) with bifunc tional extractants dihexyl N,N-diethylcarbamoylmethylphosphonate (CMP) and yl(phenyl)-N,N-diisobutylcarbamoyl-methylphosphine oxide (CMPO) h ave been recorded. The shifts in the P=O and C=O streching frequencies have been interpreted. The nitrate ions bound with metal ions were fo und to be bidentate. The nature of binding of the extractant to the me tal ions in the solvent extracted and extraction chromatographically a dsorbed complexes were found to be similar.