Stability Constants of the Ternary Complexes System : M(II)-Amino Acids-Quinolines

Chemistry Department, Faculty of Science, Minia University, EI-Minia, Egypt Manuscript received 17 November 1992, accepted 12 January 1993 Solution equilibria of the biologically important system CoII-, NiII- and Cull- mono- and dicarboxylic amino acids and/or some quinoline derivatives are investigated by the pH-titration technique-Formation of the 1 : 1 . 1 mixed-ligand complexes is interred and stability of these complexes are determined at 25 ± 0.1° and µ=0.2 mol dm- 3 (NaCIO4). Generally, it is deduced that the ternary complex is more stable than the corresponding binary metal-quinoline complex. Further, the stability of the binary and ternary complexes are examined and discusse