Covalency between the uranyl ion and dithiophosphinate by sulfur K-edge X-ray absorption spectroscopy and density functional theory.

ABSTRACT: The dithiophosphinic acids (HS₂PR₂) have been used for the selective separation of trivalent actinides (An^III) from lanthanides (Ln^III) over the past decades. The substituents on the dithiophosphinic acids dramatically impact the separation performance, but the mechanism is still open for debate. In this work, two dithiophosphinic acids with significantly different An^III/Ln^III separation performance, i.e. diphenyl dithiophosphinic acid (HS₂PPh₂) and bis(ortho-trifluoromethylphenyl) dithiophosphinic acid [HS₂P(o-CF₃C₆H₄)₂], are employed to understand the substituent effect on the bonding covalency between the S₂PR₂^- a

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC8733989 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature