ABSTRACT The anion binding properties of bis(2-hydroxy-phenyl)sulfide (1), sulfoxide (2) and sulfone (3) derivatives toward halide anions were studied by 1H NMR spectroscopy. These derivatives (1-3) formed the complex with halide anions (4) through hydrogen bonding using OH groups and showed a binding preference to a chloride anion in comparison with bromide and iodide anions.
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