Acta Cryst. (2001). E57, m382-m383  [ doi:10.1107/S1600536801011436 ]

Diaquabis(pyridine-2,5-dicarboxylato)cobalt(II)

Y.-C. Liang, R. Cao, M.-C. Hong, Q. Shi, D.-F. Sun and J.-B. Weng

Abstract: A mononuclear cobalt(II) coordination complex, [Co(Hpydc)₂(H₂O)₂] (pydc = 2,5-pyridinedicarboxylate, C₇H₄NO₄), has been prepared from the hydrothermal reaction of Co(CH₃COO)₂·4H₂O and H₂pydc in water. Cobalt(II) is coordinated by four O atoms, two from pydc ligand, two from water molecules, and two N atoms from the pydc ligands, to form a slightly distorted octahedral geometry. The Co-O and Co-N distances range from 2.055 (2) to 2.169 (2) Å. The discrete structure is further extended to form a three-dimensional structure involving weak hydrogen bonds.

Online 31 July 2001

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