Diaqua­Bis­(4-Bromo­Benzoato-Κo)Bis­(Nicotinamide-Κn1)Copper(Ii)

Abstract

The asymmetric unit of the title mononuclear CuII complex, [Cu(C7H4BrO2)2(C6H6N2O)2(H2O)2], contains one half-mol­ecule, the CuII atom being located on an inversion center. The unit cell contains two nicotinamide (NA), two 4-bromo­benzoate (PBB) ligands and two coordinated water mol­ecules. The four O atoms in the equatorial plane around the CuII ion 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 22.17 (16)°, while the pyridine ring and the benzene ring are oriented at a dihedral angle of 82.80 (6)°. In the crystal, N—H⋯O, O—H⋯O and C—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network. A weak C—H⋯π inter­action is also observed.