Date Published: September 01, 2012
Publisher: International Union of Crystallography
Author(s): Yan-Li Mao, Xiao-Ke Yu, Jian-Li Lin.
In the centrosymmetric title compound, [Cd(C7H4NO4)2(C3H4N2)2(H2O)2], the CdII atom, located on an inversion center, is coordinated by two N atoms and four O atoms in an octahedral geometry. The internal cohesion of the molecule is enhanced by an intramolecular O—H⋯O hydrogen bond. Intermolecular O—H⋯O and C—H⋯O hydrogen bonds and π–π contacts [centroid–centroid distance = 3.6549 (2) Å] define two-dimensional networks parallel to (001), which are further connected by weaker C—H⋯O interactions into a weakly connected three-dimensional supramolecular framework.
For general background to aromatic carboxyl acid complexes, see: Kuang et al. (2007 ▶); Hsu et al. (2011 ▶). For related structures, see: Zheng et al. (2008 ▶).