Acta Cryst. (2006). E62, m26-m27  [ doi:10.1107/S160053680503970X ]

catena-Poly[piperazinium [diaquacobalt(II)--benzene-1,3,5-tricaboxylato-tetraaquacobalt(II)--benzene-1,3,5-tricaboxylato] dihydrate]

W. Wei, Y. Dong, J. Han and H. Chang

Abstract: The title polymer, {(C₄H₁₂N₂)[Co₂(C₉H₃O₆)₂(H₂O)₆]·2H₂O}_n, contains two independent Co^II atoms, both of which are located on inversion centres. The benzene-1,3,5-tricarboxylate ligand bridges the Co^II atoms in two coordination modes to form a one-dimensional polymeric zigzag chain structure. The zigzag chains are connected via O-HO and N-HO hydrogen bonds to form a three-dimensional network. This determination corrects a previous report which formulated this compound as (C₄H₁₀N₂)_n[C₁₈H₂₀Co₂O₁₈]_n·2nH₂O [Chen & Liu (2004). Chem. J. Chin. Univ. 25, 1189-1193].

Online 7 December 2005

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