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Abstract

A series of novel calix[4]arenecrown-6 derivatives with an alkenyl loop of various sizes 5-8 were synthesized via intramolecular ring closing olefin metathesis and characterized by1H NMR,13C NMR and ESI-HRMS. Their complexation property towards cesium ion was studied by1H NMR technique. Two-phase extraction of alkali metal ions using UV-vis spectroscopy revealed remarkably different extractabilities. These results indicate that the complexation capacities towards cesium ions can be tuned and controlled through cooperative regulation of the strain of the loop and conformational change of calixcrown skelton. © 2010 Wen Feng. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

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Zhang, L., Du, J., Yuan, L. H., Zhang, D., Dan, G. P., Yang, Y. Y., & Feng, W. (2011). Synthesis of novel calixcrown derivatives with selective complexation towards cesium ions. Chinese Chemical Letters, 22(3), 284–287. https://doi.org/10.1016/j.cclet.2010.10.004

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