Synthesis, spectroscopic and thermal studies of some IIB group complexes with a new N 2-Schiff base ligand

Abstract

Synthesis, spectroscopic and thermal studies of some complexes of a new N 2-Schiff base ligand of N 1, N 2-bis((E)-2-methyl-3-phenylallylidene)ethane-1,2-diamine (L) with a general formula of MLX 2 (M = Zn(II), Cd(II) and Hg(II); X = Cl −, Br −, I −, SCN − and N 3 −) are described. The ligand and its complexes were characterized by elemental analysis, molar conductance, UV–vis spectra, FT-IR spectra, MS, 1H NMR and 13C NMR spectra. The conductivity measurement as well as spectral data indicated that the complexes are non-electrolyte. 1H and 13C NMR spectra have been studied in DMSO-d 6 and/or CDCl 3. The thermal behavior of the complexes shows weight loss by decomposition of the anions and ligand segments in the subsequent steps. Activation thermodynamic parameters of decomposition such as E*, Δ H*, Δ S* and Δ G* were calculated from TG curves.