Acta Cryst. (2011). E67, m913 [ doi:10.1107/S1600536811021118 ]
Abstract: In the title complex, [Co(CHO2)2(C20H14N4)(H2O)2]n, the CoII ion, lying on an inversion center, is six-coordinated by two O atoms from two monodentate formate ligands, two N atoms from two 2,6-bis(pyridin-4-yl)-4,4'-bipyridine (4-pybpy) ligands and two water molecules, displaying an octahedral geometry. The 4-pybpy ligand, having a twofold rotation axis, functions in a bridging coordination mode, connecting the CoII ions into a corrugated chain along . The chains are further linked into a three-dimensional supramolecular network by O-HO, C-HN and C-HO hydrogen bonds and - stacking interactions between the pyridine rings [centroid-to-centroid distance = 3.743 (2) Å].
Online 11 June 2011
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