Acta Cryst. (2009). E65, m607-m608  [ doi:10.1107/S1600536809015645 ]

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

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

Abstract: The title Zn^II complex, [Zn(C₇H₄BrO₂)₂(C₆H₆N₂O)₂(H₂O)₂], is centrosymmetric with the Zn atom on an inversion center. The molecule contains two 2-bromobenzoate (BB) and two nicotinamide (NA) ligands and two coordinated water molecules, all ligands being monodentate. The four O atoms in the equatorial plane around the Zn 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 carboxyl group and the adjacent benzene ring is 31.14 (12)°, while the pyridine and benzene rings are oriented at a dihedral angle of 83.54 (5)°. In the crystal structure, O-HO and N-HO hydrogen bonds link the molecules into infinite chains. A weak C-H interaction is also present.

Online 30 April 2009

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