Poly[[diaqua­(μ-4,4′-bipyridine N,N′-di­oxide-κ2O:O′)(μ-terephthalato-κ2O1:O4)cobalt(II)] 4,4′-bipyridine N,N′-dioxide monosolvate]

Ge, X.; Song, S.-Y.

doi:10.1107/S1600536812040056

Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 10 (October 2012)

metal-organic compounds

hy2589 scheme

Acta Cryst. (2012). E68, m1307 [ doi:10.1107/S1600536812040056 ]

Poly[[diaqua(-4,4'-bipyridine N,N'-dioxide-²O:O')(-terephthalato-²O¹:O⁴)cobalt(II)] 4,4'-bipyridine N,N'-dioxide monosolvate]

X. Ge and S.-Y. Song

Abstract: In the title compound, {[Co(C₈H₄O₄)(C₁₀H₈N₂O₂)(H₂O)₂]·C₁₀H₈N₂O₂}_n, the Co^II atom, lying on an inversion center, is hexacoordinated in a distorted octahedral geometry defined by two O atoms from two terephthalate (tp) ligands, two O atoms from two 4,4'-bipyridine N,N'-dioxide (bpydo) ligands and two water molecules. The coordinated tp and bpydo ligands and uncoordinated bpydo molecule all have an inversion center. The Co^II atoms are connected by the tp and bpydo ligands into a layer parallel to (111). In the crystal, O-HO hydrogen bonds link the uncoordinated bpydo molecules and the layers into a three-dimensional supramolecular structure. Intralayer O-HO hydrogen bonds and [pi] - [pi] interactions [centroid-to-centroid distances = 3.6643 (13) and 3.8048 (13) Å] are also observed.