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DOI: 10.1039/A902095K (Paper) Reference Section for: Chem. Commun., 1999, 1135-1136

Lanthanum(III) capture of 18-crown-6 in the cavity of p-sulfonatocalix[4]arene

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Alexander Drljaca, Michaele J. Hardie, Colin L. Raston, Helen R. Webb and Julian A. Johnson

Abstract

Aqueous solutions of sodium p-sulfonatocalix[4]arene, 18-crown-6 and lanthanum(III) trichloride at pH 2.5 afford the ‘ferris wheel’ type supercation: [{Ln3+⊂(18-crown-6)(OH2)3}∩{(p-sulfonatocalix[4]arene4– + 2H+)}]+ isolated as the chloride with numerous waters of crystallisation.

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