Synthesis and spectroscopic studies of some transition metal complexes of a novel Schiff base ligands derived from 5-phenylazo-salicyladehyde and o-amino benzoic acid

Spectrochim Acta A Mol Biomol Spectrosc. 2006 Dec;65(5):1208-20. doi: 10.1016/j.saa.2006.01.049. Epub 2006 Mar 6.


Cu(II), Mn(II), Ni(II), and Zn(II) metal complexes with novel heterocyclic Schiff base derived from 5-phenyl azo-salicyladehyde and o-amino benzoic acid have been synthesized and characterized on the basis of elemental analyses, electronic, IR, and (1)H NMR spectra, and also by aid of scanning electron microscopy (SEM), X-ray powder diffraction, molar ratio measurements, molar conductivity measurements, and thermogravimetric analyses. It has been found that the Schiff base behaves as neutral tridentate (ONO) ligand forming chelates with 1:1 (metal:ligand) stoichiometry.

MeSH terms

  • Aldehydes / chemistry*
  • Azo Compounds / chemistry*
  • Ligands
  • Microscopy, Electron, Scanning
  • Models, Biological
  • Organometallic Compounds / chemistry*
  • Powder Diffraction
  • Schiff Bases / chemical synthesis*
  • Schiff Bases / chemistry*
  • Spectrum Analysis
  • Thermogravimetry
  • Transition Elements / chemistry*
  • ortho-Aminobenzoates / chemistry*


  • Aldehydes
  • Azo Compounds
  • Ligands
  • Organometallic Compounds
  • Schiff Bases
  • Transition Elements
  • ortho-Aminobenzoates
  • salicylaldehyde