Acta Cryst. (2006). E62, m796-m798  [ doi:10.1107/S1600536806009081 ]

Redetermination of trans-diaquabis(picolinato-²N,O)cobalt(II) dihydrate

Z. Heren, C. C. Ersanli, C. Keser and N. Ocak Ískeleli

Abstract: The crystal structure of the title compound, [Co(C₆H₄NO₂)₂(H₂O)₂]·2H₂O, has been reinvestigated with improved precision [previous reports: Chang et al. (1972). J. Coord. Chem. 2, 31-34; Lumme et al. (1969). Suom. Kemistil. B, 42, 270]. In the title compound, the Co atom is located on an inversion center and its coordination can be described as slightly distorted octahedral, equatorially trans-coordinated by two N and O atoms of two picolinate ligands and axially coordinated by two O atoms of the water molecules. Intermolecular O-HO and C-HO hydrogen-bonding interactions result in the formation of an intricate three-dimensional network.

Online 15 March 2006

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