Crystallographic and Solution Anion Binding Studies of Bis-amidofurans and Thiophenes
- 1 October 2004
- journal article
- research article
- Published by Taylor & Francis in Supramolecular Chemistry
- Vol. 16 (7) , 469-486
- https://doi.org/10.1080/10610270410001713303
Abstract
A variety of furan and thiophene amide and thioamide cleft type anion receptors have been synthesised and crystallographically characterised. Unlike 2,5-diamidopyrrole anions, analogous 2,5-diamidofurans and thiophenes do not interlock in the solid state. The anion binding properties of these receptors have been investigated in DMSO/0.5% water solution using 1H NMR titration techniques. Solution studies and solid-state evidence suggests that the thiophene receptors may utilise a thiophene CH hydrogen atom for hydrogen bond formation to anions with a 2,4-diamidothiophene showing similar anion binding affinities to a 2,5-diamidopyrrole.Keywords
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