Synthesis and Structural Characterization of Two Tetra-Coordinated Co(II) Complexes with Benzimidazole Derivatives

Two mononuclear tetra-coordinated cobalt(II) complexes with molecular formula [Co( L ) 2 (SCN) 2 ] ( L = 1-methylbenzimidazole ( mbim ), 1 ; L = 1-methyl-2-aminobenzimidazole ( mabim ), 2 ) were prepared and characterized by IR, EA, and single crystal X-ray diffraction. The central Co(II) ion is tetrahedrally coordinated by two nitrogen atoms of benzimidazole-based ligands and two nitrogen atoms of two thiocyanato ligands. In the crystal structure of 1 and 2 , molecules are linked through intermolecular hydrogen bonds and π···π interactions forming a 3D network.