Acta Cryst. (2002). E58, m228-m230  [ doi:10.1107/S1600536802007420 ]

Poly[triaqua(-hydrogen tartrato)(-tartrato)samarium(III)]

C.-D. Wu, X.-P. Zhan, C.-Z. Lu, H.-H. Zhuang and J.-S. Huang

Abstract: The nine-coordinate Sm^III cation in [Sm{O₂CCH(OH)CH(OH)CO₂}{O₂CCH(OH)CH(OH)CO₂H}(OH₂)₃], or [Sm(C₄H₄O₆)(C₄H₅O₆)(H₂O)₃]_n, is located on a crystallographic twofold axis. The coordination geometry is capped square-antiprismatic and is defined by four O atoms derived from carboxylate/carboxylic acid groups, two hydroxyl O atoms and three water molecules. The Sm^III atoms are linked by the tartrate ligands into layers, which are connected via O-HO hydrogen bonds involving the carboxylate and hydroxyl O atoms, and water molecules.

Online 30 April 2002

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