Acta Cryst. (2005). E61, m1972-m1974  [ doi:10.1107/S1600536805028266 ]

catena-Poly[[aqua(piperazin-1-ium-N⁴)copper(II)]--5-sulfonatoisophthalato-O¹:O³]

Q.-Y. Liu and L. Xu

Abstract: Blue crystals of the title compound, [Cu(C₈H₃O₇S)(C₄H₁₁N₂)(H₂O)]_n, were obtained from the slow diffusion of a methanol solution of piperazine into an aqueous solution of sodium 5-sulfoisophthalate and copper nitrate. The Cu^II ion coordination is composed of two O atoms from two trianionic 5-sulfoisophthalic acid ligands, one N atom from the piperazinium cation and one water O atom in a distorted square-planar geometry. The Cu²⁺ ions are bridged by the sulfonate-carboxylate ligands to form a zigzag chain. Hydrogen bonds and - interactions among the chains produce a three-dimensional hydrogen-bonded architecture.

Online 14 September 2005

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