Acta Cryst. (2006). E62, m2597-m2598  [ doi:10.1107/S1600536806032466 ]

catena-Poly[piperazinium(2+) [tetraaquazinc(II)--benzene-1,3,5-tricarboxylato-diaquacobalt(II)--benzene-1,3,5-tricarboxylato] dihydrate]

W.-Y. Wei, Z. Wang, J.-Y. Han and Y.-H. Yin

Abstract: The asymmetric unit of the title polymer, {(C₄H₁₂N₂)[ZnCo(C₉H₃O₆)₂(H₂O)₆]·2H₂O}_n, contains one independent Zn^II atom and one independent Co^II atom, each of which is located on an inversion center. The benzene-1,3,5-tricarboxylate molecule bridges the Zn^II and Co^II atoms in two coordination modes, forming a one-dimensional polymeric zigzag chain structure; the chains are further linked by O-HO and N-HO hydrogen bonds, forming a three-dimensional network. In the micropore formed by the packing of the zigzag chains, there is one piperazinium(2+) cation and two water molecules.

Online 15 September 2006

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