Mercury(II) Schiff Base Complexes: Synthesis, Spectral Characterization, Thermal Studies and Crystal Structures

Document Type : Research Paper

Authors

1 Department of Chemistry, Faculty of Science, Golestan University, Gorgan, Iran

2 PhD Educated, Department of Chemistry, Payame Noor University, PO Box 19395-3697

3 Institute of Physic of the Czech Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic

Abstract

Two new mercury(II) Schiff base complexes [Hg((2,6-Cl-ba)2-1,2-pn)X2] (X = Cl (1), I (2) and (2,6-Cl-ba)2-1,2-pn = N,N'-bis(2,6-dichlorobenzylidene)-1,2-diaminopropane) have been synthesized and characterized by elemental analysis (CHN), FT-IR and 1H-NMR spectroscopy. The crystal structure of complexes 1 and 2 were determined by single-crystal X-ray diffraction. X-ray results shown that the mercury(II) ions in these complexes have a distorted tetrahedral geometry with HgN2Cl2 and HgN2I2 chromophores, respectively. In these complexes, the Schiff base ligand (2,6-Cl-ba)2-1,2-pn act as chelating bidentate ligand, coordinating via the two iminic nitrogen atoms and it adopts an E,E conformation. Finally, the thermal behavior of complexes was study using thermogravimetry in order to evaluate their thermal stability and thermal decomposition pathway.

Keywords

Volume 4, Issue 2
December 2020
Pages 270-278
  • Receive Date: 14 October 2020
  • Revise Date: 11 November 2020
  • Accept Date: 11 November 2020