Poly[[[(2,2′-bipyridine-κ2N,N′)cobalt(II)]-μ3-5-hydroxy­isophthalato-κ4O,O′:O′′:O′′′] dihydrate]

✍ Scribed by Zhuo, Xin ;Pan, Zhao-Rui ;Wang, Zuo-Wei ;Li, Yi-Zhi ;Zheng, He-Gen

• Publisher: International Union of Crystallography
• Year: 2006
• Tongue: English
• Weight: 504 KB
• Volume: 62
• Category: Article
• ISSN: 1600-5368
• DOI: 10.1107/s1600536806023907

✦ Synopsis

In the title compound, {[Co(C~8~H~4~O~5~)(C~10~H~8~N~2~)]·2H~2~O]}~n~ or {[Co(OH-BDC)(2,2′-bipy)]·2H~2~O]}~n~ (where OH-H~2~BDC is 5-hydroxyisophthalic acid and 2,2′-bipy is 2,2′-bipyridine), the Co atoms are chelated by two N atoms from the 2,2′-bipy ligand and by four O atoms from OH-BDC ligands in a highly distorted octahedral geometry. OH-BDC acts as a tetradentate ligand, with one carboxylate group chelating one Co atom and the other binding in a monodentate fashion to two other Co atoms to form a one-dimensional zigzag chain. In the crystal structure, one of the solvent water molecules lies on a crystallographic twofold axis. The one-dimensional molecular chains are assembled into a two-dimensional network via O—H...O hydrogen-bonding interactions, while π–π stacking interactions generate a three-dimensional open framework between the two-dimensional networks.