receptor for the recognition of dicarboxylate anions of varying chain length in H2O/MeOH (50:50 (v/v)) solution. The acid–base behavior of the compound, the stabilityconstants of its complexes with Cu2+ ion, and the association constants of the copper(II) cryptate with succinate (suc2–), glutarate (glu2–), adipate (adi2–), and pimelate (pim2–) were determined by potentiometry at 298.2 ± 0.1 K in H2O/MeOH
Polyaza macrobicyclic cryptands: synthesis, crystal structures of a cyclophane type macrobicyclic cryptand and of its dinuclear copper(I) cryptate, and anion binding features
Multiple (amine + aldehyde) condensation gives the macrobicyclic cryptands (1) and (3) in high yield; (1) gave a dinuclear CuI cryptate and was reduced to a polyamine (2) which binds anions, when protonated.