Crystal structure and Hirshfeld surface analysis of aqua-bis-(nicotinamide-κ)bis-(4-sulfamoylbenzoato-κ)copper(II).

In the crystal of the title complex, [Cu(CHNOS)(CHNO)(HO)], the Cu cation and the O atom of the coordinated water mol-ecule reside on a twofold rotation axis. The Cu ion is coordinated by two carboxyl-ate O atoms of the two symmetry-related 4-sulfamoylbenzoate (SB) anions and by two N atoms of the two symmetry-related nicotinamide (NA) mol-ecules at distances of 1.978 (2) and 2.025 (3) Å, respectively, forming a slightly distorted square-planar arrangement. The distorted square-pyramidal coordination environment is completed by the water O atom in the axial position at a distance of 2.147 (4) Å. In the crystal, the mol-ecules are linked O-H⋯O and N-H⋯O hydrogen bonds with (8) and (18) ring motifs, forming a three-dimensional architecture. The Hirshfeld surface analysis of the crystal structure indicates that the most important contributions for the crystal packing are from H⋯O/O⋯H (42.2%), H⋯H (25.7%) and H⋯C/C⋯H (20.0%) inter-actions.