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Preparation and characterization of Co(II) complex with 1H-benzimidazole-2-methanol

Complex, tetrakis(1H-benzimidazole-2-yl)methanol- N2, O3-di-chlorobicobalt(II) chloride, [Co2Cl2(HL)4]Cl2 ; HL = 1H-benzimidazole-2-methanol) (Figure 1.) formed by the reaction of the cobalt(II) chloride hexahydrate and the ligand by heating to reflux in a propanol, was characterized by the infrared spectroscopy, thermogravimetric analysis and single-crystal X-ray diffraction. Infrared spectroscopy indicated the coordination of ligand in the neutral form on Co (II) ion. Ligand 1H-benzimidazole-2-methanol is commercially available substance which has the coordination potential in sight of endocyclic basic nitrogen atom and hydroxyl groups. The crystal and molecular structure of ligand is known.[1] Interest in this ligand arises from its two chemical functional groups, the imidazole ring and the hydroxymethyl group, which are often encountered in the active sites of some enzymes. Organic dyes from the class of benzimidazoles are also well known. Due to versatile coordination capacities, the ligand is considered to investigate metal-assembly phenomenons and also to explore the coordination chemistry of (1H-benzimidazol-2-yl)-methanol-like ligands class with eco-friendly metals due to the possible versatile application.

Co(II) COMPLEX, 1H-benzimidazole-2-methanol

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