Key indicators: single-crystal X-ray study; T = 100 K; mean (C-C) = 0.003 Å; R factor = 0.026; wR factor = 0.058; data-to-parameter ratio = 11.2.The title compound, [Co(C 5 II ion on an inversion center, exhibiting an octahedral coordination geometry. The equatorial plane is formed by two trans-related N,O-bidentate pyridazine-3-carboxylate ligands and the axial positions are occupied by two water molecules. The Co II complex molecules are stacked in a column along the a-axis direction by an O-HÁ Á ÁN hydrogen bond between the non-coordinating pyridazine N atom and the coordinating water molecule. These columns are further connected into a layer parallel to the ac plane by additional hydrogen bonds involving the coordinating and non-coordinating water molecules, and the non-coordinating carboxylate O atom. The crystal packing is completed by interlayer weak C-HÁ Á ÁO interactions.
Related literature
ExperimentalCrystal data [Co(C 5