Journal of Thermal Analysis and Calorimetry

, Volume 62, Issue 3, pp 665–679 | Cite as

Mixed Ligand Complexes of 5-arylazo-8-hydroxyquinoline and α-amino Acids with Co(II), Ni(II) and Cu(II)

  • A. S. A. Zidan
  • A. I. El-Said
  • M. S. El-Meligy
  • A. A. M. Aly
  • O. F. Mohammed


Ten mixed ligand complexes of the type [M(X-QA)(aa)] and [Ni(X-QA)2(Haa)(H2O)],where X-HQA=5-arylazo-8-hydroxyquinoline derivatives, M=Co(II) orCu(II) and Haa=glycine (gly), alanine (ala) or methionine (met), have been prepared. The complexes have been characterized by elemental analysis, IR and electron spectra and thermal analysis. A tetrahedral structure has been proposed for the cobalt(II) and copper(II) complexes with bidentate coordination of amino acids. The nickel(II) complexes have been assigned an octahedral structure with the amino acids acting as monodentate ligands. The thermal behaviour of the complexes has been studied before and after γ-irradiation.

α-amino acids 5-arylazo-8-hydroxyquinoline characterization mixed ligand complexes thermal analysis 


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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • A. S. A. Zidan
    • 1
  • A. I. El-Said
    • 1
  • M. S. El-Meligy
    • 1
  • A. A. M. Aly
    • 1
  • O. F. Mohammed
    • 1
  1. 1.Chemistry Department, Faculty of ScienceAssiut UniversityAssiutEgypt

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