Cyclic thioureaderivatives having three different types of cyclophane structure, ortho-meta, meta-meta, and meta-para, and a lariat-type thiourea, were synthesized, and their anion-binding ability was examined. The association constants for the complexation between the receptors and several anions in DMSO-d(6) were measured by the titration method using (1)H NMR spectroscopy. All receptors, except
Cyclophanes having two thiourea groups were synthesized and their anion binding ability was examined by titration method using 1H-NMR spectroscopy. Strong and selective anion binding of the preorganized cyclic receptors was observed in the general order of H2PO4− > CH3COO− > Cl− > HSO4− > Br−.