Crystal structure and Hirshfeld surface analysis of bis-(benzoato-κ2 O,O')[bis-(pyridin-2-yl-κN)amine]nickel(II).

A new mononuclear NiII complex with bis-(pyridin-2-yl)amine (dpyam) and benzoate (benz), [Ni(C7H5O2)2(C10H9N3)], crystallizes in the monoclinic space group P21/c. The NiII ion adopts a cis-distorted octa-hedral geometry with an [NiN2O4] chromophore. In the crystal, the complex mol-ecules are linked together into a one-dimensional chain by symmetry-related π-π stacking inter-actions [centroid-to-centroid distance = 3.7257 (17) Å], along with N-H⋯O and C-H⋯O hydrogen bonds. The crystal packing is further stabilized by C-H⋯π inter-actions, which were investigated by Hirshfeld surface analysis.