Transition Metal Chemistry

, Volume 5, Issue 1, pp 1–3 | Cite as

Ternary complexes of copper(II), nickel(II) and zinc(II) with nitrilotriacetic acid as a primary ligand and some phenolic acids as secondary ligands

  • Pradyot Kumar Datta
  • Madhup Chandra
  • Arun K. Dey


The formation of ternary complexes of the MAL3− type [where M = CuII, NiII and ZnII ; A = nitrilotriacetic acid (NTA); L = 1-hydroxy-2-naphthoic acid (1,2 HNA) and 2-hydroxy-1-naphthoic acid (2,1 HNA)] have been studied potentiometrically in 50% v/v aqueous — ethanol (25° and µ = 0.1). Under identical conditions the binary complexes of the 1,2- and 2,1-HNA ligands have also been examined. The values of mixed ligand formation constants KMAL have been found to be lower than KML (first step formation constant of binary complexes) and even less than\(K_{ML_2 } \) (second step formation constant of binary complexes).


Copper Zinc Physical Chemistry Nickel Inorganic Chemistry 
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Copyright information

© Verlag Chemie, GmbH 1980

Authors and Affiliations

  • Pradyot Kumar Datta
    • 1
  • Madhup Chandra
    • 2
  • Arun K. Dey
    • 2
  1. 1.Chemical LaboratoriesD.H.S.K. CollegeDibrugarhIndia
  2. 2.Chemical LaboratoriesUniversity of AllahabadAllahabadIndia

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