Volume 126, Issue 43 pp. 11682-11684
Zuschrift

Anion Complexation and The Hofmeister Effect

Ryan S. Carnegie

Ryan S. Carnegie

Department of Chemistry, Tulane University, New Orleans, LA 70118 (USA) http://www.gibbgroup.org

These authors contributed equally to this work.

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Corinne L. D. Gibb

Corinne L. D. Gibb

Department of Chemistry, Tulane University, New Orleans, LA 70118 (USA) http://www.gibbgroup.org

These authors contributed equally to this work.

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Prof. Bruce C. Gibb

Corresponding Author

Prof. Bruce C. Gibb

Department of Chemistry, Tulane University, New Orleans, LA 70118 (USA) http://www.gibbgroup.org

Department of Chemistry, Tulane University, New Orleans, LA 70118 (USA) http://www.gibbgroup.orgSearch for more papers by this author
First published: 05 September 2014
Citations: 25

We acknowledge the financial support of the National Institutes of Health (GM GM098141.

Abstract

The 1H NMR spectroscopic analysis of the binding of the ClO4 anion to the hydrophobic, concave binding site of a deep-cavity cavitand is presented. The strength of association between the host and the ClO4 anion is controlled by both the nature and concentration of co-salts in a manner that follows the Hofmeister series. A model that partitions this trend into the competitive binding of the co-salt anion to the hydrophobic pocket of the host and counterion binding to its external carboxylate groups successfully accounts for the observed changes in ClO4 affinity.

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