Acta Cryst. (2009). E65, m1051-m1052  [ doi:10.1107/S1600536809030980 ]

Diaquabis(N,N-diethylnicotinamide-N¹)bis[4-(dimethylamino)benzoato-O]cobalt(II)

T. Hökelek, H. Dal, B. Tercan, Ö. Aybirdi and H. Necefoglu

Abstract: The title Co^II complex, [Co(C₉H₁₀NO₂)₂(C₁₀H₁₄N₂O)₂(H₂O)₂], is centrosymmetric. It contains two dimethylaminobenzoate (DMAB) and two diethylnicotinamide (DENA) ligands and two water molecules, all of them being monodentate. The four O atoms in the equatorial plane around the Co atom form a slightly distorted square-planar arrangement, while the slightly distorted octahedral coordination is completed by the two pyridine N atoms of DENA ligands with the Co-N distance of 2.1519 (11) Å in the axial positions. The Co atom is displaced out of the least-squares plane of the carboxylate group by -0.781 (1) Å. The dihedral angle between the carboxylate group and the adjacent benzene ring is 5.05 (7)°, while the pyridine and benzene rings are oriented at a dihedral angle of 71.48 (5)°. In the crystal structure, intermolecular O-HO and C-HO hydrogen bonds link the molecules into a three-dimensional network. Two weak C-H interactions are also present.

Online 8 August 2009

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