Binuclear nickel(II) complex containing 6-methyl-2,2'-bipyridine and chloride ligands: Synthesis, characterization, thermal analyses, and crystal structure determination

چکیده مقاله

A new binuclear complex of [{NiCl(6-mbipy)}₂(μ-Cl)₂] (1) was prepared from the reaction of NiCl₂.6H₂O and 6-methyl-2,2'-bipyridine (6-mbipy) in a mixture of methanol and acetonitrile. Suitable crystals of 1 for X-ray diffraction measurement were obtained by slow evaporation of the resulted green solution at room temperature. Complex 1 was characterized by spectral methods (IR, UV–Vis, and luminescence), elemental analysis (CHN), and single-crystal X-ray diffraction. The structure of 1 is centrosymmetric binuclear complex and each Ni(II) cation is five-coordinated in a slightly distorted square-pyramidal configuration. In this binuclear complex, the Ni…Ni distance is 3.533(1)Å. Furthermore, the luminescence emission of the title complex was blue-shifted and is stronger than that of free 6-methyl-2,2'-bipyridine ligand. Thermal stabilities of this complex was also studied by thermogravimetric analysis. © 2020, Iranian Institute of Research and Development in Chemical Industries. All rights reserved.