New water-soluble organic ligands for Actinide cations complexation

Sasaki, Yuji; Suzuki, Hideya*; Sugo, Yumi; Kimura, Takaumi; Choppin, G. R.*

Chemistry Letters, 35(3), p.256 - 257, 2006/03

https://doi.org/10.1246/cl.2006.256

Novel water-soluble organic ligands, N,N,N',N'-tetramethyl-diglycolamide (TMDGA), N,N,N',N'-tetraethyl-diglycolamide (TEDGA), N,N,N',N'-tetrapropyl-diglycolamide (TPDGA) and N,N-dipropyl-diglycolamic acid (DPDGAc), were synthesized and examined for complexation with An(III) and An(IV). These reagents are readily soluble in water and form more stable complexes with Pu(IV) and Am(III) than does EDTA of hexadentate ligand. TEDGA and TPDGA can back-extract effectively An into the aqueous phase. In addition, the An-complex in the aqueous phase can be dissociated and the TEDGA can be separated from the An and recovered by extraction using a polar organic solvent.