Structural characterizations, spectroscopic, electrochemical properties, and antibacterial activities of copper (II) and cobalt (II) complexes containing imidazole ring

Two two-dimensional and three-dimensional supramolecular complexes [M (L)(2)] (NO3)(2)center dot 2CH(3)OH (M = Cu(1) and Co(2), L = 2-(4-imidazolyl)-4-methyl-1,2-quinazoline-N-3-oxide), were synthesized and characterized by FT-IR and UV-Vis spectroscopy, as well as elemental analysis. The spectroscopic data of both complexes were compared with the ligand L. Both complexes were determined by X-ray single-crystal diffraction and display similar coordination geometry and have a 2:1 ligand-to-metal ratio. All the central M (II) atoms are hexa-coordinated with perfect octahedral geometries. In the crystal structures, complexes 1 and 2 form an infinite 1-D chain-like and 2-D, 3-D supramolecular frameworks. X-ray photoelectron spectrum (XPS) and thermal stability of 2 was investigated. Moreover, electrochemical properties and antimicrobial activities of both complexes were also studied.