• Journal of the Korean Magnetic Resonance Society
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• v.25 no.4
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• pp.45-50
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• 2021

A calix[4]pyrrole (1) bearing a quaternary ammonium pendant via its meso phenoxy linker has been synthesized as the bromide salt form. It was revealed by ¹H NMR spectroscopic analyses performed in DMSO-d₆ that receptor 1 binds F^- with high affinity and selectivity over other halide anions. The binding of receptor 1•Br^- with F^- and Cltakes place by anion metathesis with the anions including F^- and Cl^-.