Publication: Chalcogen Bonding Ion-Pair Cryptand Host Discrimination of Potassium Halide Salts
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2021-05-20
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15213765
09476539
09476539
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2-s2.0-85104996543
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Mahidol University
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SCOPUS
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Chemistry - A European Journal. Vol.27, No.29 (2021), 7837-7841
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Andrew Docker, Thanthapatra Bunchuay, Michael Ahrens, Antonio J. Martinez-Martinez, Paul D. Beer Chalcogen Bonding Ion-Pair Cryptand Host Discrimination of Potassium Halide Salts. Chemistry - A European Journal. Vol.27, No.29 (2021), 7837-7841. doi:10.1002/chem.202100579 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/76529
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Chalcogen Bonding Ion-Pair Cryptand Host Discrimination of Potassium Halide Salts
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A series of chalcogen, halogen and hydrogen bonding heteroditopic macrobicyclic cryptands are reported and their potassium halide ion-pair recognition properties investigated. Saliently, the co-bound potassium cation was determined to be crucial in switching on the bromide and iodide recognition properties of the respective cryptand receptor. Importantly, the nature of the sigma-hole mediated interaction employed in the anion recognition component is demonstrated to significantly augment the ion-pair binding behaviour, markedly so for the halogen bonding analogue. Most notably the incorporation of a chelating chalcogen bonding donor motif significantly improves the selectivity towards KBr over KI, relative to halogen and hydrogen bonding analogues.