Issue 17, 2014

Neutral CH and cationic CH donor groups as anion receptors

Abstract

The design and synthesis of anion selective receptors and chemosensors continues to attract considerable interest within the supramolecular community. In recent years, increasing attention has focused on the use of neutral and cationic CH hydrogen bond donors as anion recognition elements. Over the last five years, motifs that support CH⋯X (X = anion) hydrogen bonds have been actively used in various shape persistent macrocycles, foldamers and “molecular machines”. This tutorial review highlights recent developments in host–guest chemistry based on the use of neutral and cationic CH hydrogen bond donors. Also discussed are various structural classifications, including alkyl CH, phenyl CH, triazole-based CH, imidazolium (CH)+ and triazolium (CH)+ hydrogen bond donor systems.

Graphical abstract: Neutral CH and cationic CH donor groups as anion receptors

Article information

Article type
Tutorial Review
Submitted
26 Mar 2014
First published
28 May 2014

Chem. Soc. Rev., 2014,43, 6198-6213

Author version available

Neutral CH and cationic CH donor groups as anion receptors

J. Cai and J. L. Sessler, Chem. Soc. Rev., 2014, 43, 6198 DOI: 10.1039/C4CS00115J

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