Equilibrium Studies on Some Binary Complexes of La(III), Ce(III), Pr(III) and Nd(III) with Ligands Containing N-N Donor Atoms

Abstract

The present paper describes a potentiometric study on formation
constants of binary complexes of inner transition "4f' metal ions
La(III), Ce(III), Pr(III) and Nd(III) with amines such as ethylenediamine,
N-N-diroetbyl ethylenediamine, N-N-diethyl ethylenediamine,
1,2-diaminopropane and 1,3-diaminopropane carried out
at constant temperature 30 ± 0.1 °C and ionic strength  μ= 0.2 M
dm^-3 (NaCIO₄). Various factors influencing the formation and
stabilities of binary complexes have been discussed.