Diaqua­Bis(2-Bromo­Benzoato-Κo)Bis­(Nicotinamide-Κn1)Nickel(Ii)

Abstract

The title NiII 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—H⋯O and N—H⋯O hydrogen bonds link the mol­ecules into a supra­molecular structure. A weak C—H⋯π inter­action is also found.