Solvent extracted and extraction chromatographically adsorbed complexes of bifunctional extractants with f-elements

The IR spectra of the solvent extracted and extraction chromatographically adsorbed complexes of HNO3, Nd(III), Th(IV) and U(VI) with bifunctional extractants dihexyl N,N-diethylcarbamoylmethylophosphonate (CMP) and octyl (phenyl)-N,N-diisobutylcarbamoyl-methylphosphine oxide (CMPO) have been recorded. The shifts in the P=0 and C=0 streching frequencies have been interpreted. The nitrate ions bound with metal ions were found to be bidentate. The nature of binding of the extractant to the metal ions in the solvent extracted and extraction chromatographically adsorbed complexes were found to be similar.