Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 7 (July 2013)


metal-organic compounds



is5284 scheme

Acta Cryst. (2013). E69, m420-m421    [ doi:10.1107/S1600536813017340 ]

trans-Diaquabis(pyridazine-3-carboxylato-[kappa]2N2,O)cobalt(II) dihydrate

B. Artetxe, S. Reinoso, L. San Felices, J. Martín-Caballero and J. M. Gutiérrez-Zorrilla

Abstract: The title compound, [Co(C5H3N2O2)2(H2O)2]·2H2O, contains a CoII 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 CoII complex molecules are stacked in a column along the a-axis direction by an O-H...N 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-H...O interactions.


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