4-Phosphoryl Pyrazolones for Highly Selective Lithium Separation from Alkali Metal Ions.

ABSTRACT: Effective receptors for the separation of Li⁺ from a mixture with other alkali metal ions under mild conditions remains an important challenge that could benefit from new approaches. In this study, it is demonstrated that the 4-phosphoryl pyrazolones, HL² -HL⁴ , in the presence of the typical industrial organophosphorus co-ligands tributylphosphine oxide (TBPO), tributylphosphate (TBP) and trioctylphosphine oxide (TOPO), are able to selectively recognise and extract lithium ions from aqueous solution. Structural investigations in solution as well as in the solid state reveal the existence of a series of multinuclear Li⁺ complexes that include dimers (TBPO, TBP) as well as rarely observed trimers (TOPO) and represent the first clear evidence for t

SUBMITTER: Zhang J 

PROVIDER: S-EPMC9298229 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature