ChemInform Abstract: Coordination of Lanthanides by Two Polyamino Polycarboxylic Macrocycles: Formation of Highly Stable Lanthanide Complexes.

Abstract The formation constants of three lanthanide complexes of the macrocyclic tetraacetic acid (Ia) [Ln(III): Eu, Tb, Lu] and of some lanthanide complexes of (Ib) [Ln(III): Nd, Sm, Eu, Gd, Dy, Er, Yb] are measured by potentiometric and competition methods.