Complexation Behavior of a Proton Pump Inhibitor with Bivalent Metal Ions

Research Article

Suman Malik and Jaishree Morey

Abstract

Benzimidazoles act as good ligand to transition metal ions and they exhibit several coordination modes. The synthesis of hetero-chelates of the type ML2.2H2O has been reported here.The metal complex of Co(II) and Ni(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 both Co(II) and Ni(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.

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