Acta Cryst. (2009). E65, m605-m606  [ doi:10.1107/S1600536809015633 ]

Diaquabis(4-methylaminobenzoato-O)bis(nicotinamide-N¹)nickel(II)

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

Abstract: The title Ni^II complex, [Ni(C₈H₈NO₂)₂(C₆H₆N₂O)₂(H₂O)₂], is centrosymmetric with the Ni atom on an inversion center. The molecule contains two 4-methylaminobenzoate (MAB) and two nicotinamide (NA) ligands and two coordinated water molecules, all ligands being monodentate. The four O atoms in the equatorial plane around the Ni atom form a slightly distorted square-planar arrangement, while the slightly distorted octahedral coordination is completed by the two N atoms of the NA ligands in the axial positions. The dihedral angle between the carboxylate group and the adjacent benzene ring is 2.09 (14)°, while the pyridine and benzene rings are oriented at a dihedral angle of 66.15 (4)°. In the crystal structure, intermolecular O-HO and N-HO hydrogen bonds link the molecules into a three-dimensional network.

Online 30 April 2009

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