Acta Cryst. (2006). E62, m3014-m3015  [ doi:10.1107/S1600536806042413 ]

catena-Poly[[dodecaaqua(₃-benzene-1,3,5-tricarboxylato)dinickel(II)zinc(II)]--benzene-1,3,5-tricarboxylato]

S. Liang, H. Wang, Z. Wang and J.-Y. Han

Abstract: The asymmetric unit of the title polymer, [ZnNi₂(C₉H₃O₆)₂(H₂O)₁₂]_n, contains one Zn^II atom on a twofold rotation axis and one Ni^II atom in a general position. Benzene-1,3,5-tricarboxylate anions bridge the Zn^II and Co^II atoms in two different coordination modes, forming a one-dimensional polymeric linear chain structure; the chains are further linked by O-HO hydrogen bonds, forming a three-dimensional network. One anion is in a general position and bridges two Ni^II atoms, with the third carboxylate group uncoordinated; the other lies on the same twofold rotation axis as the Zn^II atom, which it chelates while simultaneously coordinating two Ni^II atoms in monodentate fashion.

Online 25 October 2006

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