Catena-Poly[[dodecaaqua(μ3-benzene-1,3,5-tricarboxylato)dinickel(II)zinc(II)]-μ-benzene-1,3,5-tricarboxylato

Abstract

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