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Acta Cryst. (2013). C69, 1132-1135  [ doi:10.1107/S0108270113024499 ]

A three-dimensional polymeric potassium complex of 5-sulfono­benzene-1,2,4-tri­carb­oxy­lic acid: poly[[mu]-aqua-aqua-[mu]9-(2,4-dicarb­oxy-5-sulfonato­benzoato)-dipotassium(I)]

W.-L. Xiong, Y.-L. Wang and Q.-Y. Liu

Synopsis: A three-dimensional polymeric potassium complex incorporating bridging water mol­ecules and 2,4-dicarb­oxy-5-sulfonato­benzoate ligands forms a one-dimensional inorganic chain with cage-like K4(SO3)2 repeat units. The chains are bridged by carb­oxy­lic acid groups to form a two-dimensional layer, and these layers are further linked by carboyxlate groups and benzene rings to generate a three-dimensional framework.

Formula: [K2(C9H4O9S)(H2O)2]

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