Benzimidazoles act as good ligand to transition metal ions and they exhibit several coordination modes. The synthesis of heterochelates
of the type ML2.2H2O has been reported here. The metal complex of Co(II), Ni(II) and Cu(II) Complexes have been
synthesized with 6-(difluoromethoxy)-2-[(3,4-dimethoxypyridin-2-yl)methylsulfinyl]-1H-benzo[d]imidazole (Pantoprazole).
Pantoprazole is a proton pump inhibitor (PPI) drug that inhibits gastric acid secretion. Proton pump inhibitors (or PPI) are a group of
drugs whose main action is a pronounced and long-lasting reduction of gastric acid production. Conductometric titrations have
suggested metal-ligand ratio of 1:2 for all Co(II), Ni(II) and Cu(II) complexes. The ligand behaves as a bidentate with N, O donor
atoms. Complexes have been synthesized and characterized by elemental analysis, UV-visible and IR spectral studies.