Lanthanide(III) complexes with a podand Schiff base containing an N4O3 coordination site

Article abstract of DOI:10.1016/0020-1693(96)05140-7

New lanthanide complexes [Ln(L) (dmf)]₂ with a podand Schiff base ligand H₃L have been prepared by [3 + 1] condensation of 2,6-diformyl-4-chlorophenol and tris-(2-aminoethyl)amine in the presence of Ln(Cl)₃·nH₂O (Ln=La, Gd and Dy) and NEt₃. The lanthanide (III) ions coordinate into the inner N₄O₃ chamber of the ligand bearing three free carbonyl groups which may be involved in further functionalization.