Monatshefte für Chemie / Chemical Monthly

, Volume 108, Issue 1, pp 163–168 | Cite as

Studies on mixed ligand complexes involving ligands of biological importance [Ni(II), Zn(II) or Cd(II)-1,10-phenanthroline — or 2,2′-bipyridyl-histidine]

  • Gajai Singh Malik
  • Satya Pal Singh
  • Jagdish P. Tandon
Anorganische, Struktur- und Physikalische Chemie

Abstract

The formation of mixed ligand complexes of the title metal ions with 1,10-phenanthroline (Phen) or 2,2′-bipyridyl (Bipy) in presence of histidine (His) has been studied pH-metrically. The stepwise formation of 1∶1∶1 mixed ligand complexes has been inferred from the potentiometric titration curves. Initially, a 1∶1 metal—Phen or—Bipy complex is formed in the lower buffer region and then the addition ofHis takes place resulting in 1∶1∶1 ternary complex formation. The formation constants (K MAL ) of the resulting mixed ligand complexes have been calculated at 30±1°C (μ=0.1 KNO3) and the values have been found to be higher than the formation constants of 1∶2 and lower than those of 1∶1 metal—His complexes. The order of stability in terms of metal ions follows the order, Ni(II)>Zn(II)>Cd(II).

Keywords

Histidine Phen KNO3 Potentiometric Titration Ternary Complex 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    J. D. Joshi, I. P. Mavani, andP. K. Bhattacharya, Indian J. Chem.11, 820 (1973).Google Scholar
  2. 2.
    I. V. Pyatnitskii andG. N. Trochinskaya, Zh. anal. Khim.28, 704 (1973).Google Scholar
  3. 3.
    M. V. Chidambram andP. K. Bhattacharya, Indian J. Chem.9, 1274 (1971).Google Scholar
  4. 4.
    B. R. Panchal andP. K. Bhattacharya, Indian J. Chem.11, 394 (1973).Google Scholar
  5. 5.
    K. N. Leong andM. W. Lister, Canad. J. Chem.50, 3573 (1972).Google Scholar
  6. 6.
    R. L. Dutta andDhurubananda De, J. Indian Chem. Soc.46, 62, 74 (1969).Google Scholar
  7. 7.
    G. A. L'Heureux andA. E. Martell, J. Inorg. Nucl. Chem.28, 481 (1966).Google Scholar
  8. 8.
    N. C. Li andR. A. Manning, J. Amer. Chem. Soc.77, 5255 (1955).Google Scholar
  9. 9.
    R. Leberman andB. R. Rabin, Trans. Faraday Soc.55, 1660 (1959).Google Scholar
  10. 10.
    A. Chakarvorty andF. A. Cotton, J. Phys. Chem.67, 2878 (1963).Google Scholar

Copyright information

© Springer-Verlag 1977

Authors and Affiliations

  • Gajai Singh Malik
    • 1
  • Satya Pal Singh
  • Jagdish P. Tandon
    • 2
  1. 1.Chemistry DepartmentJ.V. CollegeBaraut (Meerut)India
  2. 2.Chemistry DepartmentUniversity of RajasthanJaipurIndia

Personalised recommendations