Medicinal Chemistry Research

, Volume 21, Issue 8, pp 1708–1716 | Cite as

Synthesis, spectroscopic, thermal and antimicrobial studies of Co(II), Ni(II), Cu(II) and Zn(II) complexes with Schiff base derived from 4-amino-3-mercapto-6-methyl-5-oxo-1,2,4-triazine

  • Kiran Singh
  • Yogender Kumar
  • Parvesh Puri
  • Chetan Sharma
  • K. R. Aneja
Original Research


Coordination complexes of Co(II), Ni(II), Cu(II) and Zn(II) with Schiff base derived from syringaldehyde and 4-amino-3-mercapto-6-methyl-5-oxo-1,2,4-triazine have been synthesized. These complexes have been characterized by elemental analysis, magnetic moment, spectroscopic (IR, Electronic, 1H NMR, ESR) and thermogravimetric analysis. Magnetic and spectral data suggest octahedral geometry for Co(II), Ni(II) and Zn(II) complexes and square planar for Cu(II) complexes. The presence of coordinated water in metal complexes was confirmed by thermal and IR data. The Schiff base and its metal complexes have been screened for antibacterial (Pseudomonas aeruginosa, Bacillus subtilis, Escherichia coli, Staphylococcus aureus) and antifungal activities (Aspergillus niger, A. flavus). A comparison is made between activities of complexes with Schiff base and with the standard antibiotics.


Schiff base 1,2,4-triazine Thermal studies Antimicrobial activity Octahedral complexes 



One of the authors Yogender Kumar is highly thankful to University Grant commission, New Delhi for providing junior research fellowship (JRF) and Department of Chemistry, Kurukshetra University Kurukshetra, for providing facilities to carry out this research work.


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Kiran Singh
    • 1
  • Yogender Kumar
    • 1
  • Parvesh Puri
    • 1
  • Chetan Sharma
    • 2
  • K. R. Aneja
    • 2
  1. 1.Department of ChemistryKurukshetra UniversityKurukshetraIndia
  2. 2.Department of MicrobiologyKurukshetra UniversityKurukshetraIndia

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