Electrochemical Anion Recognition By Novel Ferrocenyl Imidazole SystemsAuthor(s): Jean-Luc Thomas | Joshua Howarth | Anthony M. Kennedy
Journal: Molecules ISSN 1420-3049
Volume: 7; Issue: 12; Start page: 861; Date: 2002;
Keywords: Ferrocenylimidazolium salts | anion receptors | 1H-NMR titrations | cyclovoltammetry | recognition
A novel class of anion receptors with with C-HÃ‚Â·Ã‚Â·Ã‚Â·X- hydrogen bonding is introduced and demonstrated for Cl-, Br-, NO3- and HSO4- recognition. Cyclic voltammetry revealed that novel ferrocenylimidazolium salts, syntheses of which are briefly described, selectively complex and electrochemically recognise guest anions. Futhermore, proton NMR spectroscopy indicated the formation of 1:2 stoichiometric complexes with Cl-, Br and I- and 1:1 stoichiometric complexes with NO3- and HSO4-.