Synthesis, crystal structure and Hirshfeld surface analysis of bis-(1H-benzimidazole-κN (3))bis(benzimidazole-2-carboxyl-ato-κ(2) N (3),O)cobalt(II)

The title complex, [Co(C(8)H(5)N(2)O(2))(2)(C(7)H(6)N(2))(2)], crystallizes in the monoclinic space group P2 (1) /c with one-half of the mol-ecule in the asymmetric unit. The Co(2+) ion exhibits a distorted octa-hedral environment formed by two monodentate benzimidazole ligands and two bidentate benzimidazole-2-carboxyl-ate ligands. The crystal packing features N-H⋯O hydrogen bonds and C-H⋯π contacts, which generate a chain along [011]. Hirshfeld surface analysis shows that H⋯C/C⋯H (36.2%) and H⋯H (35.3%) contacts dominate the inter-molecular inter-actions, followed by O⋯H/H⋯O and N⋯H/H⋯N contributions.