Tetrakis(imidazolium) macrocyclic receptors for anion binding.
New (tetrakis)imidazolium macrocyclic receptor systems of variable cavity size have been synthesised by stepwise alkylation reactions of bis(imidazolium) precursor compounds. Proton NMR titration studies reveal the macrocycles to strongly bind halide and benzoate anions, with two receptor systems displaying notable selectivity for fluoride in competitive acetonitrile-water (9:1) solvent media.
Wong
Wallace W H
WW
Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR.
Vickers
Matthew S
MS
Cowley
Andrew R
AR
Paul
Rowena L
RL
Beer
Paul D
PD
D000838:Anions / Q000032:analysis* / Q000737:chemistry; D001565:Benzoates / Q000032:analysis; D001665:Binding Sites; D006219:Halogens / Q000032:analysis; D007093:Imidazoles / Q000138:chemical synthesis / Q000737:chemistry*; D047028:Macrocyclic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D017186:Titrimetry
D000838:Anions; D001565:Benzoates; D006219:Halogens; D007093:Imidazoles; D047028:Macrocyclic Compounds