Acta Cryst. (2005). E61, m1957-m1959  [ doi:10.1107/S1600536805028151 ]

Bis[hexaaquacadmium(II)] 25,26,27,28-tetrahydroxy-2,8,14,19-tetrathiacalix[4]arene-5,11,17,23-tetrasulfonate monohydrate clathrate

B.-T. Zhao, P.-Z. Hu, J.-G. Wang, L.-F. Ma, L.-Y. Wang and S. W. Ng

Abstract: The title compound, [Cd(H₂O)₆]₂(C₂₄H₂O₁₆S₈)·H₂O, the bis[hexaaquacadmium(II)] salt of the p-sulfonatothiacalix[4]arene tetraanion, crystallizes as a hydrate; two symmetry-independent cations interact with the tetraanion via their coordinated water molecules. The Cd atoms and water O atom lie on special positions of site symmetry m and the complete calixarene anion is generated by mirror symmetry. The water molecule is weakly associated with the calixarene cavity by way of long O-HO hydrogen bonds.

Online 14 September 2005

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