Zn(II) and Hg(II) complexes of naphthalene based thiosemicarbazone: Structure and spectroscopic studies

  • Basu A
  • Das G
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Abstract

Synthesis, structure and spectroscopic characterization of 2-thiophenealdehyde-N(4)-napthylthiosemicarbazone and its complexes with biologically important Zn(II) and toxic Hg(II) metal ions have been reported. The crystal structure of the complexes reveals that both are distorted tetrahedral. In the Hg(II) complex the ligand is neutral and mondented where as in Zn(II) complex the ligand is bidented and anionic. Whereas conductivity measurement study shows both the complexes are molecular species. The beautiful changes in absorption spectra along with isosbestic points upon addition of respective metal salts to the ligand solution convincingly support the formation of metal complexes in solution phase. The other spectroscopic studies also show good correlation with their solid state structures. © 2011 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Crystal structure
  • Hg(II) complex
  • Spectroscopic studies
  • Thiosemicarbazone
  • Zn(II) complex

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