Synthesis, structural and optical properties of novel borylated Cu(II) and Co(II) metal complexes of 4-benzylaminobiphenylglyoxime

4-Benzylaminobiphenylglyoxime ligand and its Cu(II) and Co(II) complexes were prepared. BF2+-bridge containing 4-benzylaminobiphenylglyoxime complexes were obtained by replacing of the bridging protons of the dioxime complexes with BF2 group. These compounds have been characterized by elemental analysis, spectroscopic (ICP-OES, infra-red) and magnetic susceptibility measurements. Thermal decomposition of the complexes is studied in nitrogen atmosphere. The final decomposition products are found to be the corresponding metal oxides. The optical constants such as optical conductivity, dielectric constant, refractive index were determined for the complexes. The analysis of the optical absorption data revealed that the band gap Eg was direct transitions. The optical dispersion parameters were determined according to Wemple and Didomenico method.

Graphical abstractTwo novel BF2+-bridge containing 4-benzylaminobiphenylglyoxime Co(II) and Cu(II) complexes have been synthesized by replacing of the bridging protons of the dioxime complexes with BF2 group. These compounds were characterized using elemental analysis, IR, ICP-OES, magnetic susceptibility, thermal gravimetry techniques. The optical band gaps, optical dispersion parameters, optical constants such as optical conductivity, dielectric constant, refractive index were determined for the complexes.Figure optionsDownload full-size imageDownload as PowerPoint slide