Acta Cryst. (2004). E60, m1790-m1792  [ doi:10.1107/S1600536804028132 ]

Tetraaquabis(4-carboxy-1H-imidazole-5-carboxylato-²N,O)calcium(II) monohydrate

S. Gao, X.-F. Zhang, L.-H. Huo and H. Zhao

Abstract: In the title complex, [Ca(H₂IDC)₂(H₂O)₄]·H₂O, (H₂IDC^- is 4-carboxy-1H-imidazole-5-carboxylate, C₅H₃N₂O₄^-), the Ca^II atom is located on a twofold rotation axis and is trans-coordinated by two N,O bidentate H₂IDC^- ligands and four water molecules, resulting in a distorted bicapped triangular prismatic configuration. The water molecule is also located on a twofold rotation axis. A three-dimensional network of N-HO and O-HO hydrogen bonds help to stabilize the crystal packing.

Online 6 November 2004

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