S. N. LIMAYE and M. C. SAXENA. Can. J. Chem. 64, 865 (1986).Meta-ligand association constants of 1: 1 binary (ML) and 1: 1: 1 ternary (MAL) complexes of the type M + A = MA; MA + L = MAL (where M = ~a~+ , ce3+, PI^+, ~d~+ , or Sm3+; A = primary ligand = EDTA; L = secondary ligand = 0-0, 0-N, 0-S donor aliphatic or aromatic ligand) have been determined potentiometrically by the Irving-Rossotti titration technique at ionic strength 0.2 (mol dmp3 NaC104) and 25°C. Differences between log KML and log KMAL are negative; this may be chiefly due to electrostatic repulsion between the primary binary complex and the incoming secondary ligand during the formation of the mixed-ligand complexes. The relative complexing tendencies of various secondary ligands have been found to
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