Acta Cryst. (2007). E63, m2445  [ doi:10.1107/S1600536807042122 ]

catena-Poly[[(2,2'-bipyridine-²N,N')iron(II)]--5-carboxy-4-carboxylatoimidazol-1-ido-⁴N³,O⁴:N¹,O⁵]

Z.-F. Li, S.-W. Wang, Q. Zhang and X.-J. Yu

Abstract: The title compound, [Fe(C₅H₂N₂O₄)(C₁₀H₈N₂)]_n, was prepared by hydrothermal synthesis. The structure contains two crystallographically independent monomer units which exhibit similar geometry. The coordination environment of the Fe^II atom is octahedral, comprising two O atoms and four N atoms. Each Fe^II atom is chelated by one 2,2'-bipyridine ligand, and is linked to two neighbouring Fe^II atoms through bridging 5-carboxy-4-carboxylatoimidazol-1-ide ligands, forming zigzag chains parallel to the b axis. Intramolecular O-HO hydrogen bonds are formed between the carboxy and carboxylate groups of each 5-carboxy-4-carboxylatoimidazol-1-ide ligand.

Online 1 September 2007

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