Further insight to selectivity issues in halide binding in a tiny octaazacryptand
- 6 November 2000
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 22,p. 2269-2270
- https://doi.org/10.1039/b004167j
Abstract
The crystal structure of the hexahydrochloride salt of the tiny azacryptand, 1,4,7,10,13,16,21,24-octaazabicyclo[8.8.8]hexacosane, reveals a chloride ion inside the tiny bicyclic cavity; 1H NMR studies indicate that while only fluoride binds strongly in the pH range 5.5–2.5, a dramatic increase in the affinity for chloride occurs at pH ≲ 2.5.Keywords
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