Abstract
A new series of acyclic anion receptors ( 1– 4) based on methyl 5-(aminomethyl)-1 H-pyrrole-2-carboxylate were designed and synthesized. The anion recognition properties of these receptors were examined by 1H NMR spectroscopy and rationalized by density functional theoretical calculation. Receptor 1 displays the highest affinity and selectivity for anionic guests mainly due to the intramolecular hydrogen bonds and rigid molecular geometry.
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