Slow relaxation processes of salen type Dy2 complex and 1D ionic spiral Dyn coordination polymer

Abstract

Two salen-type Dy complexes, namely [Dy₂L₃(CH₃OH)] (1) and {[Dy(H₂L)Cl₂(MeOH)₃]Cl·3MeOH}_n (2) (H₂L = N,N′-bis(salicylidene)-1,2-cyclohexanediamine), have been isolated by the reactions of H₂L with Dy(OAc)₃·6H₂O and DyCl₃·6H₂O, respectively. X-ray crystallographic analysis reveals that 1 is a dinuclear structure and 2 is a 1D ionic spiral chain structure. Magnetic studies indicate that both complexes 1 and 2 exhibit slow magnetic relaxation, extending the recent reports on pure 4f-type single molecule magnets (SMMs) and single ion magnets (SIMs).