Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5224284 | Tetrahedron | 2008 | 7 Pages |
Abstract
Hosts with thiourea groups bind anions by formation of multiple hydrogen bonds. This contribution discusses how spacers linking two or four thiourea groups affect the host affinity and selectivity. While most of the bis-thioureas bind H2PO4â preferentially, the extent of selectivity over chloride, acetate, and H2AsO4â is determined by the size of the binding cavity. A tetrakis-thiourea is shown to exhibit a unique H2AsO4â selectivity, and the discrimination of chloride is enhanced by specific solvation in dimethyl sulfoxide.
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Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Annie N. Leung, Dave A. Degenhardt, Philippe Bühlmann,