0000000001303285
AUTHOR
Andrea Brugnara
Selective recognition of fluoride anion in water by a copper(II) center embedded in a hydrophobic cavity
The ability of a water-soluble pentacationic calix[6]arene-based CuII complex to bind anions in water has been explored. Quite remarkably, the complex exhibits strong and selective fluoride binding in the pH range of 6–7. The binding constant at pH 5.9 was evaluated to be 85 000 M−1, which is one of the highest values ever reported for a fluoride probe in water and at this pH. The complex also binds chloride ions, but 1000 times less efficiently. The combination of the calix[6]arene hydrophobic cavity with the CuII complex, presenting its labile site in the endo position, is the reason for the selective recognition process. The single crystal X-ray structure of the organo-soluble parent com…
CCDC 997677: Experimental Crystal Structure Determination
Related Article: Andrea Brugnara, Filip Topić, Kari Rissanen, Aurélien de la Lande, Benoit Colasson, Olivia Reinaud|2014|Chemical Science|5|3897|doi:10.1039/C4SC01457J