Acta Cryst. (2010). E66, m556-m557  [ doi:10.1107/S1600536810013954 ]

Diaquabis(N,N-diethylnicotinamide-N¹)bis(4-methylbenzoato-O)cobalt(II)

H. Necefoglu, E. Çimen, B. Tercan, E. Ermis and T. Hökelek

Abstract: In the centrosymmetric mononuclear title complex, [Co(C₈H₇O₂)₂(C₁₀H₁₄N₂O)₂(H₂O)₂], the Co^II ion is located on an inversion center. The asymmetric unit contains one 4-methylbenzoate (PMB) anion, one N,N-diethylnicotinamide (DENA) ligand and one coordinated water molecule. The four O atoms in the equatorial plane around the Co^II ion form a slightly distorted square-planar arrangement, while the slightly distorted octahedral coordination is completed by the two pyridine N atoms of the DENA ligands in the axial positions. The dihedral angle between the carboxylate group and the attached benzene ring is 3.73 (14)°, while the pyridine and benzene rings are oriented at a dihedral angle of 77.28 (6)°. In the crystal structure, intermolecular O-HO and C-HO hydrogen bonds link the molecules into a two-dimensional network parallel to (001). The structure is further stabilized by - contacts between the pyridine rings [centroid-centroid distance = 3.544 (1) Å] and weak C-H interactions involving the benzene ring.

Online 21 April 2010

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