title: Novel bile acid-based cyclic bisimidazolium receptors for anion recognition.
abstract: [structure: see text] Novel deoxycholic acid-based cyclic receptors, 3 and 4, containing two imidazolium groups and m-xylene and p-xylene as spacers have been synthesized. These receptors bind anions through hydrogen bonds utilizing two imidazolium (C-H)(+) and inwardly directed methylene hydrogens of both acetyl groups. Receptor 3 shows a moderate selectivity for fluoride ion whereas receptor 4 shows high affinity and selectivity for chloride ion in CDCl(3).
authors.affiliation: Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
authors.forename: Vijay K
authors.initials: VK
authors.lastname: Khatri
authors.forename: Shailesh
authors.initials: S
authors.lastname: Upreti
authors.forename: Pramod S
authors.initials: PS
authors.lastname: Pandey
mesh_terms: D000838:Anions / Q000737:chemistry; D001647:Bile Acids and Salts / Q000737:chemistry*; D002104:Cadmium / Q000737:chemistry; D002712:Chlorides / Q000737:chemistry; D019826:Cholic Acid / Q000737:chemistry*; D006860:Hydrogen Bonding; D007093:Imidazoles / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D015394:Molecular Structure; D014992:Xylenes / Q000737:chemistry*
chemical_list: D000838:Anions; D001647:Bile Acids and Salts; D002712:Chlorides; D007093:Imidazoles; D014992:Xylenes; D002104:Cadmium; D019826:Cholic Acid