Solvent extraction of some organic cations into nitrobenzene by using cesium dicarbollylcobaltate in the presence of a hexaarylbenzene-based receptor

From extraction experiments and γ-activity measurements, the exchange extraction constants corresponding to the general equilibrium C +(aq) + 1·Cs+(nb) \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \rightleftarrows $$\end{document}1·C+(nb) + Cs+(aq) taking place in the two-phase water–nitrobenzene system (C+ = organic cation, 1 = hexaarylbenzene-based receptor; aq = aqueous phase, nb = nitrobenzene phase) were evaluated. Furthermore, the stability constants of the 1·C+ cationic complex species in nitrobenzene saturated with water were calculated.