Mini-Donut (IMAGE) Wiley Caption When traditionally weak C-H hydrogen bonds are preorganized in a shape-persistent macrocycle, a strong affinity for chloride ions emerges. This discovery arises from the dual use of click chemistry for efficient macrocyclization and the favorable steric properties of the resulting 1,2,3-triazoles. Credit (C) Wiley-VCH 2008 Usage Restrictions Permission to use with appropriate credit and link to http://dx.doi.org/10.1002/anie.200704717 License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.