Abstract:
The stability constants of complexes formed in a result of interaction «host-guest» of water-soluble
calix[4]resorcinarene with metal ions (Cs+, Pd2+, Ce3+, Eu3+) in ratio 1:1 and thermodynamic parameters of
their formation were calculated. The dependence of the Gibbs energy change of formation of complexes on
the atomic number of the element was constructed. It is shown that the value of stability constants depends on
the degree of deprotonation of the rim of the calix[4]resorcinarene. It is found that the guest-cations — Ce3+
and Eu3+ are characterized by high charge density, whereby they form the complexes which are relatively
strong, and more hydrated.
