Platinum and palladium complexes of thiosemicarbazones derived of 2-acetylthiophene: Synthesis and spectral studies

Spectrochim Acta A Mol Biomol Spectrosc. 2006 Mar 1;63(3):669-72. doi: 10.1016/j.saa.2005.06.016. Epub 2005 Jul 18.

Abstract

The reaction of 2-acetylthiophene thiosemicarbazone (2-HATT) and 2-acetylthiophene 4-phenylthiosemicarbazone (2-HAT-4-FT) with Pd(COD)Cl(2) (COD = 1,5-cyclooctadiene) and trans-Pt(2)PEt(3)Cl(4) yielded four new metal complexes: [Pd(2-HATT)Cl(2)] (1), [Pd(2-ATT)(2)] (2), [Pd(2-AT-4-FT)Cl] (3) and [Pt(2-ATT)(PEt(3))Cl] (4). Apart from compound 3 all the others were characterised by (1)H and (13)C{(1)H} NMR, infrared spectroscopy, and elemental analysis. Multinuclear NMR experiments of (31)P{(1)H} and (195)Pt{(1)H} of complex 4 have revealed that the ligand 2-HATT behaves as a bidentate chelating agent towards Pd(COD)Cl(2) and trans-Pt(2)PEt(3)Cl(4) whereas ligand 2-HAT-4-FT forms a tridentate chelating complex with Pd(COD)Cl(2).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Ligands
  • Magnetic Resonance Spectroscopy
  • Models, Chemical
  • Organometallic Compounds / chemistry
  • Palladium / chemistry*
  • Platinum / analysis*
  • Platinum / chemistry*
  • Spectrophotometry / methods*
  • Spectroscopy, Fourier Transform Infrared
  • Temperature
  • Thiophenes / chemistry*
  • Thiosemicarbazones / chemical synthesis
  • Thiosemicarbazones / chemistry*

Substances

  • Ligands
  • Organometallic Compounds
  • Thiophenes
  • Thiosemicarbazones
  • Platinum
  • 2-acetylthiophene
  • Palladium