Synthesis and Structural Characterization of Ln(III) Complexes (Ln = Eu, Gd, Tb, Er, Tm, Lu) of Tripodal Tris[2(salicylideneamino)ethyl]amine

The preparation and characterization of Ln(III) complexes (Ln = Eu, Gd, Tb, Er, Tm, Lu) of heptadentate (N4O3) ligand trensal, tris[2-(salicylideneamino)ethyl]amine (H3L1), have been studied. The molecular structures of [LnL1] were determined by X-ray structural analysis ; these are heptadentate complexes in which the metal ions are coordinated by the three oxygen atoms and the four nitrogen atoms.