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Experientia

, Volume 39, Issue 3, pp 261–262 | Cite as

Metal complex formation by nicotianamine, a possible phytosiderophore

  • I. Beneš
  • K. Schreiber
  • H. Ripperger
  • A. Kircheiss
Short Communications

Summary

The acid dissociation constants of nicotianamine (1) (pK1=6.97, pK2=9.13, pK3=9.75; 0.1 M KClO4, 25°C) and the stability constants for its 1∶1 complexes with bivalent metal ions (log KCu=18.6, log KNi=16.1, log KCo=14.8, log KZn=14.7, log KFe=12.1, log KMn=8.8, log KMg≈4.5; 0.1 M KClO4, 25°C) were determined using potentiometric titrations in aqueous solution. Fe(III)-nicotianamine complexes were not detected under the same experimental conditions.

Keywords

Aqueous Solution Titration Complex Formation Metal Complex Stability Constant 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

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Copyright information

© Birkhäuser Verlag 1983

Authors and Affiliations

  • I. Beneš
    • 1
    • 2
  • K. Schreiber
    • 1
    • 2
  • H. Ripperger
    • 1
    • 2
  • A. Kircheiss
    • 1
    • 2
  1. 1.Institute of Plant BiochemistryAcademy of Sciences of the GDRHalle/S.German Democratic Republic
  2. 2.Department of ChemistryMartin Luther UniversityHalle/S.German Democratic Republic

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