A series of mononuclear lanthanide complexes with chiral Schiff base ligands [Ln(FTA)3L] [Ln = Dy(1), Sm(2), Eu(3), Gd(4), and Tb(5), L = (S,S)-2,2′-Bis(4-benzyl-2-oxazoline)] were synthesized and characterized. Among these complexes, complex 1 represents the first example of mononuclear lanthanide complexes displaying single-ion magnet behavior and ferroelectricity.
![Graphical abstract: Single-ion magnets based on mononuclear lanthanide complexes with chiral Schiff base ligands [Ln(FTA)3L] (Ln = Sm, Eu, Gd, Tb and Dy)](http://hg.y866.cn/compound/lib/scimg/usr/1/B924547B.jpg)
