Structural and magnetic studies of mononuclear lanthanide complexes derived from N-rich chiral Schiff bases

Abstract

A new family of mononuclear lanthanide complexes with the formula [Ce^III(L)(NO₃)₃(MeOH)] (1) and [Ln^III(L)(NO₃)₃]·MeOH where Ln = Gd (2) or Dy (3) and L = N,N′-bis(pyridin-2-ylmethylene)cyclohexane-1,2-diamine has been obtained with the use of enantiomerically pure Schiff bases. Dynamic magnetic studies indicate that 1–3 present field-induced slow relaxation of the magnetization and their response has been compared with the magnetically diluted complexes 2d and 3d. Structural studies have been carried out by single crystal X-ray and powder diffraction.