Abstract
New mono- and bis-urea substituted ferrocene receptors have been synthesised. Proton NMR anion coordination studies with chloride and dihydrogen phosphate reveal the presence of bulky tert-butyl ester group urea substitiuents disfavours H 2PO 4 − complexation and amplifies the recognition of Cl −. Electrochemical studies showed these urea ferrocene receptors electrochemically recognise H 2PO 4 − and Cl − and AcO − via perturbations of the respective ferrocene oxidation wave.
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