Acta Cryst. (2006). E62, m2794-m2795  [ doi:10.1107/S1600536806038141 ]

catena-Poly[[[diaqua(6-carboxypyridine-2-carboxylato)samarium(II)]--pyridine-2,6-dicarboxylato] tetrahydrate]

Y. Liu, J.-M. Dou, D.-Q. Wang, X.-X. Zhang and L. Zhou

Abstract: The title compound, {[Sm(C₇H₃NO₄)(C₇H₄NO₄)(H₂O)₂]·4H₂O}_n, is isostructural with its La^III, Ce^III, Pr^III and Nd^III analogues and has been prepared by a hydrothermal reaction of samarium(III) nitrate (hydrate)_n and pyridine-2,6-dicarboxylic acid. The asymmetric unit contains one Sm^III ion, two pyridine-2,6-dicarboxylate anions (one of them only singly deprotonated), and six water molecules. The Sm^III atoms are linked via bridging pyridine-2,6-dicarboxylate ligands, yielding a chain structure.

Online 4 October 2006

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