Supramolecular Assemblies of Sulfonatomethylated Calix4resorcinarenes with Aquated Sodium(I), Cesium(I), and Aluminum(III) Ions

摘要

Interactions of C-iso-butyl-calix4resorcinarene (1) with sodium sulfite and formaldehyde solution gave a new water-soluble sulfonatomethylated calix4resorcinarene (C4RS) 2 in a quantitative yield. Treatment of 2 with NaOH in a mixture of water, acetonitrile, and methanol afforded complex Na-4(C4RS-4H)(CH3CN)(H2O)(6)(2).CH3OH (3). Reaction of 2 with NaOH aqueous solution, followed by addition of cesium chloride, led to isolation of complex Cs4Na(C4RS)(2)-5H)(H2O)(2) (4). Cation exchange of aluminum nitrate hydrate with complex 3 afforded complex {Al-3(H2O)(5)(C4RS)(2)-9H)}(2).(C2H5OH)(2).(H2O)(4) (5). The three new coordination complexes 3-5 were characterized by single crystal X-ray diffraction analysis. Complexes 3 and 4 display a two-dimensional bilayer structure through bridging of the sulfonate groups by sodium/cesium cations. The aluminum sulfonatomethylated calix4resorcinarene sheets in complex 5 are associated in a one-dimensional bilayer arrangement and further connected by hydrogen bonds to form a two-dimensional network.