Tetrasodium tetrahydroxytetrathiacalix[4]arenetetrasulfonate tetradecahydrate

The title compound, 4Na(+).C24H12O16S84-.14H(2)O (Na(4)TCAS.-14H(2)O), was found to crystallize in the triclinic space group P (1) over bar. The X-ray structure revealed that the centrosymmetric TCAS(4-) anion adopts the 1,2-alternate conformation. The sodium cations are surrounded by five or six O atoms in the crystal structure. All sodium ions form centrosymmetric aqua-bridged dimers, Na(mu-H2O)(2)Na, which are also coordinated by sulfonate O atoms and contribute to the formation of a three-dimensional network. The compound exists in the solid state as layers of anionic thiacalixarenes, alternating with inorganic layers that contain sodium cations and water molecules. Intercalation of metal ions into the solid-state layered structure was observed.