Crown ether-appended calix[2]triazolium[2]arene as a macrocyclic receptor for the recognition of the H2PO4− anion†
Jihee
Cho, 
‡a
Peter
Verwilst,
‡b
Amit
Sharma,
b
Chang Seop
Hong,
*b
Jong Seung
Kim
*b
and
Sanghee
Kim
*a
‡a
Peter
Verwilst,
‡b
Amit
Sharma,
b
Chang Seop
Hong,
*b
Jong Seung
Kim
*b
and
Sanghee
Kim
*a
Abstract
A crown ether-appended calix[2]triazolium[2]arene, which exhibits excellent selectivity for H2PO4− compared to other anions, has been designed and synthesized. The selectivity of the prepared receptor for H2PO4− is caused by the stabilization of H2PO4− by the neighboring triazolium hydrogen bond donors and crown ether hydrogen bond acceptors.
![Graphical abstract: Crown ether-appended calix[2]triazolium[2]arene as a macrocyclic receptor for the recognition of the H2PO4− anion](/ts/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C9CC08906C&imageInfo.ImageIdentifier.Year=2020)
- This article is part of the themed collection: The Mechanics of Supramolecular Chemistry
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