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  • Title: Enhanced anion recognition by ammonium [2]catenane functionalisation of a halogen bonding acyclic receptor.
    Author: Bunchuay T, Khianjinda T, Srisawat P, Tse YC, Gateley C, Beer PD.
    Journal: Chem Commun (Camb); 2023 Nov 14; 59(91):13615-13618. PubMed ID: 37901989.
    Abstract:
    Ammonium-dibenzo[24]crown-8 [2]catenane functionalisation of a 3,5-bis-iodotriazole-pyridine motif produces a potent halogen bonding (XB) receptor capable of binding anions in aqueous-acetone solvent mixtures of up to 20% water. Exploiting the kinetically inert nature of the mechanically bonded cationic ammonium [2]catenane substituents, the XB receptor is demonstrated to exhibit superior anion recognition behaviour in comparison to labile sodium cation complexed bis-benzo[15]crown-5 XB and HB triazole-pyridine heteroditopic receptor analogues.
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