(1) A. E. Arbuzov Institute of Organic and Physical Chemistry, Kasan Scientific Centre of the Russian Academy of Sciences, Arbusov Str. 8, Kasan, 420088, Russia
Abstract:
The inclusion behaviour of a new water-soluble sulfonated calix[4]resorcinarene towards alkylammonium and N-methylpyridinium cations has been investigated on the basis of 1H NMR spectroscopy and pH-potentiometry data. The inclusion of the N-methylpyridinium cation has been found to be dependent on pH with the preferable inclusion of the methyl substituent in alkaline and the aromatic ring in neutral aqueous media.