Diaquabis(4-bromobenzoato-κO)bis(nicotinamide-κN1)copper(II)

Diaquabis(4-bromobenzoato-κO)bis(nicotinamide-κN1)copper(II)

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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 Display Figure 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 Flower 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.