CMPO-functionalized [C.sub.3]-symmetric tripodal ligands in liquid/liquid extractions: efficient, selective recognition of Pu(IV) with low affinity for 3+ metal ions

Structurally modified [C.sub.3]-symmetric carbomoylmethylphosphine oxide is synthesized and its ability to extract actinides from acidic nuclear waste is evaluated. The ligand system has good binding efficiency to An(IV) and plutonium(IV) at low concentrations.