A hetero-alkali metallic (Na, K) three-dimensional supramolecular assembly based on p-sulfonatothiacalix[4]arene†
Abstract
Interactions of supramolecular assemblies constructed from calixarenes or thiacalixarenes and their derivatives with single metal coordination are well studied. But we report here the assembly of p-sulfonatothiacalix[4]arene with two different alkali metals, Na and K, which has been characterized crystallographically. The X-ray crystal structure of Na2K4[p-sulfonatothiacalix[4]arene]·7H2O (5) showed direct evidence for several fascinating interactions in supramolecular chemistry. We also investigated the CO2 gas adsorption properties of complex 5.