Date Published: March 01, 2012
Publisher: International Union of Crystallography
Author(s): Xiao-Li Chen, Ya-Li Qiao, Lou-Jun Gao, Hua-Li Cui, Mei-Li Zhang.
The title compound, [Cu2(C7H3NO5)2(C10H8N2)(H2O)2], exhibits a centrosymmetric binuclear molecule. Each completely deprotonated 4-hydroxypyridine-2,6-dicarboxylic acid molecule assumes a tridentate chelating coordination mode. The square-pyramidal coordination geometry around the CuII ion is completed by the bridging bipyridine ligand and an apical water molecule. Adjacent complexes are connected via O—H⋯O and C—H⋯O hydrogen bonds to generate a three-dimensional supramolecular structure.
For related literature on the construction of supramolecular structures, see: Robin & Fromm (2006 ▶); Desiraju (1989 ▶). For compounds using heterocyclic carboxylic acids such as pyridine-, pyrazole- and imidazolecarboxylic acids as building blocks, see: Lin et al. (1998 ▶); Zhao et al. (2003 ▶); Pan et al. (2000 ▶); Liu et al. (2004 ▶); Mahata & Natarajan (2005 ▶); Panagiotis et al. (2005 ▶).