Research Article: Poly[aqua­[μ3-4-carb­oxy-2-(pyridin-4-yl)-1H-imidazole-5-carboxyl­ato-κ5N1,O5:N3,O4:N2]nickel(II)]

Date Published: February 01, 2012

Publisher: International Union of Crystallography

Author(s): Xue-Min Jing, Shu-zhe Gong, Li-Wei Xiao.


The water-coordinated Ni2+ cation in the title compound, [Ni(C10H5N3O4)(H2O)]n, assumes an octa­hedral NiN3O3 coord­ination mode and is N,O-chelated by two deprotonated 2-(pyridin-4-yl)-1H-imidazole-4,5-dicarb­oxy­lic acid (HPyImDC2−) ligands, forming a layer structure extending in the bc plane. The chains are arranged along the b-axis direction, forming a layer structure extending in the bc plane. O—H⋯O hydrogen bonding between the layers results in the formation of a three-dimensional supra­molecular framework. The structure is isotypic with the Zn analogue [Li et al. (2009). Cryst. Growth Des.6, 3423–3431].

Partial Text

For the isotypic Zn compound, see: Li et al. (2009 ▶). The HPyImDC2− anion behaves as a T-shaped linker, see: Jing et al. (2010 ▶).