The anion recognition of simple-structure molecular tweezers receptors based on acyl-thiourea

Three title compounds have been designed and synthesized in high yields as novel simple anion receptors. They have a high selectivity for F- and AcO-. The binding properties for anions of the receptors have been examined by UV-Vis and H-1 NMR spectroscopy. The spectrographic data indicate that a 1:1 stoichiometry complex is formed between the receptors and the anions through hydrogen bonding interactions in DMSO solution.