Synthesis, spectral and thermal behavior of some new four coordinated complexes

Abstract

A new symmetric bidentate Schiff base N, N' bis(4-florobenzal-dehydene)-1, 2-diaminoethane(L) and its complexes with general formula MLX2 (M= Zn(II), Cd(II) and Hg(II) and X=chloride, bromide, iodide, thiocyanate and azide) have been prepared. The ligand and complexes have been established by microanalysis, electronic, FT-IR, 1H and 13C NMR spectra, and by molar conductivity measurements. All compounds are non-electrolytes in chloroform or DMSO-d6. The thermal behavior of the complexes shows weight loss by decomposition of the anions and ligand segments in the subsequent steps. Some activation thermodynamic parameters such as E*, ΔH*, ΔS* and ΔG* were calculated from thermal analysis. © 2012 Hindawi Publishing Corporation.