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 CuII 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 π–π interactions among the chains produce a three-dimensional hydrogen-bonded architecture.
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