Acta Cryst. (2009). E65, m1566-m1567  [ doi:10.1107/S1600536809046819 ]

Poly[diaquabis(₃-1H-benzimidazole-5,6-dicarboxylato-⁴N³:O⁵,O^5':O⁶)bis(₂-1H,3H-benzimidazolium-5,6-dicarboxylato-³O⁵,O^5':O⁶)digadolinium(III)]

J.-X. Huang, Y.-Y. Wu, C.-D. Huang, Q.-Y. Lian and R.-H. Zeng

Abstract: In the title complex, [Gd₂(C₉H₄N₂O₄)₂(C₉H₅N₂O₄)₂(H₂O)₂]_n, two of the benzimidazole-5,6-dicarboxylate ligands are protonated at the imidazole groups. Each Gd^III ion is coordinated by six O atoms and one N atom from five ligands and one water molecule, displaying a distorted bicapped trigonal-prismatic geometry. The Gd^III ions are linked by the carboxylate groups and imidazole N atoms, forming a layer parallel to (001). These layers are further connected by O-HO and N-HO hydrogen bonds into a three-dimensional supramolecular network.

Online 14 November 2009

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