Trans-Diaquabis(pyridazine-3-carboxylato-κ2N2,O)cobalt(II) dihydrate

Beñat Artetxe,Juan M Gutiérrez-Zorrilla,Santiago Reinoso,Jagoba Martín-Caballero,Leire San Felices

doi:10.1107/s1600536813017340

Beñat Artetxe, Juan M Gutiérrez-Zorrilla + Show 3 more

Open Access

https://doi.org/10.1107/s1600536813017340

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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.

Highlights

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

Summary

Agilent SuperNova diffractometer

R factor = 0.026; wR factor = 0.058; data-to-parameter ratio = 11.2. 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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