Date Published: May 01, 2009
Publisher: International Union of Crystallography
Author(s): Tingting Zhang, Tao Zhang, Feng Xu, Hongze Liang.
The dinuclear title compound, [Co2(C10H8N4O4)2(H2O)4]·6H2O, lies about an inversion centre. Each CoII atom is six-coordinated by two water molecules, two carboxylate O atoms and two N atoms of two symmetry-related 2,2′-bi-1H-imidazole-1,1′-diacetate (L2−) ligands in a slightly distorted octahedral geometry. Molecules are linked into a three-dimensional framework via O—H⋯O and C—H⋯O hydrogen bonds.
For background to 2,2′-biimidazole derivatives, see: Atencio et al. (2004 ▶); Ghosh et al. (2006 ▶); Tadokoro & Nakasuji (2000 ▶); Zhang & Liang (2009 ▶). For the preparation of the ligand, see: Zhang et al. (2009 ▶).