Acta Cryst. (2009). E65, m768-m769  [ doi:10.1107/S1600536809021710 ]

Diaquabis(2-bromobenzoato-O)bis(nicotinamide-N¹)nickel(II)

T. Hökelek, F. Yilmaz, B. Tercan, F. E. Özbek and H. Necefoglu

Abstract: The title Ni^II complex, [Ni(C₇H₄BrO₂)₂(C₆H₆N₂O)₂(H₂O)₂], is centrosymmetric. It contains two 2-bromobenzoate (BB) ligands, two nicotinamide (NA) ligands and two water molecules, all of them 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 30.81 (17)°, while the pyridine and benzene rings are oriented at a dihedral angle of 84.66 (6)°. In the crystal structure, O-HO and N-HO hydrogen bonds link the molecules into a supramolecular structure. A weak C-H interaction is also found.

Online 13 June 2009

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