Research Article: μ-4,4′-Bipyridine-bis­[aqua­(4-hy­droxy­pyridine-2,6-dicarboxyl­ato)copper(II)]

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.

Partial Text

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 ▶).