An expanded azamacrocyclic host containing propylene chains has been synthesized and investigated of various inorganic anions in D2O at a pH of 1.7 by NMR titrations. Our results suggest that the receptor binds a sulfate anion showing moderate selectivity in water. Crystals grown of the compound in presence of perchlorates were analyzed by X-ray crystallography and the structural characterization suggests that the anion is bonded through NH���O interactions. A packing diagram shows that externally linked perchlorate ions form an infinite ID chain.

Anion binding studies of an expanded azamacrocyle: A selective receptor for sulfate in water

243rd National Meeting (2012)

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