Acta Cryst. (2009). E65, m280  [ doi:10.1107/S160053680900470X ]

Diaquabis[5-(2-pyridyl)-1H-tetrazolato-²N¹,N⁵]cobalt(II)

Z.-H. Sun, L.-B. Meng and H. Lin

Abstract: In the title compound, [Co(C₆H₄N₅)₂(H₂O)₂], the Co atom is bonded to two water molecules and two bidentate 5-(2-pyridyl)tetrazolate ligands resulting in a slightly distorted octahedral CoN₄O₂ coordination geometry. The Co^II cation is situated on a crystallographic center of inversion. The asymmetric unit therefore comprises one-half of the molecule. The four N atoms belonging to two bidentate 5-(2-pyridyl)tetrazolate ligands lie in the equatorial plane and the two associated water molecules are observed in the axial coordination sites. The crystal structure exhibits a three-dimensional supramolecular network assembled by intermolecular O-HN hydrogen bonds.

Online 18 February 2009

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