Synergistic extraction of some divalent cations into nitrobenzene by using dicarbollylcobaltate and substituted calix[5]arenes
Year: 2024
Type: article
Abstract: From extraction experiments and γ-activity measurements, the exchange extraction constants corresponding to the general equilibriums Sr2+ (aq) + 2 picrate (aq) + L (nb) ⇔ SrL2+ (nb) + 2 picrate (nb) and M2+ (aq) + SrL2+ (nb) ⇔ ML2+ (nb) + Sr2+ (aq) taking place in the two–phase water–nitrobenzene system (M2+ = Ca2+, Ba2+, Pb2+, Cu2+, Zn2+, Cd2+, Mn2+, Co2+, Ni2+, UO 2 2 + ${\text{UO}}_{2}^{2+}$ ; L = substituted calix[5]arenes; aq = aqueous phase, nb = nitrobenzene phase) were evaluated. Moreover, the stability constants of the ML2+ complexes in nitrobenzene saturated with water were calculated. Very high stability constants of pentaethyl p-tert-butylcalix[5]arene pentaacetate ligand with Ba2+ cation has been found.
Source: Radiochimica Acta
Authors: Petr Vaňura, Pavel Selucký
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,489
OpenAlex ID: W4402748930