Complexation of dioxovanadium(V) and dioxouranium(VI) by p-sulphonato-calix[4]arene in aqueous solution

The complexive ability of p-sulphonato-calix[4]arene towards dioxovanadium(V) and dioxouranium(VI) has been evaluated in acidic aqueous solution (pH 2). Also, the thermodynamic parameters have been evaluated and are interpreted in terms of the importance of the various interactions responsible for the complexation