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Electrochemical Anion Recognition By Novel Ferrocenyl Imidazole Systems

Author(s): Jean-Luc Thomas | Joshua Howarth | Anthony M. Kennedy

Journal: Molecules
ISSN 1420-3049

Volume: 7;
Issue: 12;
Start page: 861;
Date: 2002;
Original page

Keywords: Ferrocenylimidazolium salts | anion receptors | 1H-NMR titrations | cyclovoltammetry | recognition

A novel class of anion receptors with with C-H···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-.