Research Article: catena-Poly[[[tetra­aqua­cobalt(II)]-μ-4,4′-bipyridine-κ2N:N′] pyridine-3,5-dicarboxyl­ate trihydrate]

Date Published: July 01, 2011

Publisher: International Union of Crystallography

Author(s): Xian-Dong Zhu.


The crystal structure of the title compound, {[Co(C10H8N2)(H2O)4](C7H3NO4)·3H2O}n, consists of CoII polymeric complex cations, uncoordinated pyridine-3,5-dicarboxyl­ate anions and lattice water mol­ecules. The CoII cation is coordinated by two N atoms from two 4,4′-bipyridine ligands and four water mol­ecules in a distorted octa­hedral geometry. The 4,4′-bipyridine ligands bridge Co cations, forming a polymeric chain running along the b axis. The two pyridine rings of the 4,4′-biyridine are twisted to each other by a dihedral angle of 8.95 (9)°. Extensive O—H⋯O hydrogen bonding network is present in the crystal structure.

Partial Text

For the utility of 4,4′-bipyridine in assembling metal-organic frameworks, see: Briadha & Fujita (2001 ▶). For related complexes, see: Li et al. (2004 ▶); Zhang & Zhu (2005 ▶). For the synthesis, see: Whitfield et al. (2001 ▶).




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