Synthesis and spectroscopic studies of some mercury(II) complexes of an symmetrical bidentate Schiff base ligand

Schiff base ligands are one of the most important classes of donor compounds forming metal coordination materials. Various applications of the Schiff base complexes may be the reason for development in synthesis of these types of compounds with different structures [1]. The Schiff base ligands and its complexes have showed a broad range ofbiological activities such as antibacterial, antitumor, antifungal, DNA cleavage systems and anti‐infammatory. Among the different methods that have been used for the synthesis of nano structures, the sonochemical procedure has become popular due to the rapid synthesis, product quality, environmentally friendly and low cost [2].In this work, we report some new mercury(II) Schiff base complexes HgLX2 (where X = halide and/or pseudohalide and L is a bis[(4-methoxyphenyl)acryaldehydene)- ethylenediamine were synthesized and characterized by molar conductance, thermal analyses, UV–visible spectra, FT-IR spectra, 1H NMR and 13C NMR spectra. Themercury compounds in nano-structure size were also prepared by sonochemical method. The nano-structure compounds were characterized by X-ray diffraction (XRD) andscanning electron microscopy (SEM). The antimicrobial activity of the ligand and its mercury complexes against four gram positive and gram negative bacteria and also twofungi was assessed by the disk diffusion method.