Detection and Differentiation of Neutral Organic Compounds by [superscript 19]F NMR with a Tungsten Calix[4]arene Imido Complex
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Swager_Detection and.pdf
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Author(s)
Zhao, Yanchuan
Swager, Timothy Manning
Date Issued
December 2013
Journal
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Citation
Zhao, Yanchuan, and Timothy M. Swager. “Detection and Differentiation of Neutral Organic Compounds by [superscript 19]F NMR with a Tungsten Calix[4]arene Imido Complex.” Journal of the American Chemical Society 135, no. 50 (December 18, 2013): 18770–18773.
Version
Author's final manuscript
Abstract
Fluorinated tungsten calix[4]arene imido complexes were synthesized and used as receptors to detect and differentiate neutral organic compounds. It was found that the binding of specific neutral organic molecules to the tungsten centers induces an upfield shift of the fluorine atom appended on the arylimido group, the extent of which is highly dependent on electronic and steric properties. We demonstrate that the specific bonding and size-selectivity of calix[4]arene tungsten–imido complex combined with [superscript 19]F NMR spectroscopy is a powerful new method for the analysis of complex mixtures.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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DOI of Published Version
https://doi.org/10.1021/ja4106804
