Journal
SUPRAMOLECULAR CHEMISTRY
Volume 20, Issue 1-2, Pages 169-190Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10610270701747610
Keywords
anion recognition; anion transport; nitrate; synthetic receptors
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Synthetic receptors have been developed for anions such as chloride, phosphate, sulphate and carboxylate. Development of selective receptors for nitrate has, however, been more difficult. Theoretical calculations show that a six-coordinate geometry is the ideal geometry for coordinating NO3-. Crystallographic data show, however, that NO3- usually adopts a two- or three-coordinate geometry when interacting with receptors. In this review, we briefly discuss the role of NO3- in human health and its physical properties. We discuss how proteins and synthetic compounds bind NO3-, with an emphasis on crystal structures and calculations. Synthetic compounds that best mimic proteins in their types of non-covalent interactions are generally the most effective for binding NO3-.
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