Two new chain complexes consisting of a Mn(salen) building block bridged by O–Se–O units, [Mn2(salen)2(L)](ClO4) (1) and {[Mn(salen)]2(L)2}·Y (2) (salen = N,N′-bis(salicylidene)-ethylenediamine, L = 3,4,5-trifluorobenzeneseleninic acid, Y = salicylaldehyde) have been synthesized and characterized structurally and magnetically.
Two CuII–DyIII and CoIII–DyIII dinuclear complexes of a Schiff base ligand (H3L) exhibit single-molecule magnetic behaviour with multiple slow magnetic relaxation processes for the former.
Seven μ-Oacylhydrazone-bridged Ln3 clusters were synthesized. Cluster 3 displayed magnetic refrigeration properties, whereas cluster 5 showed slow magnetic relaxation. The solid-state fluorescence properties of 2, 4 and 5 were also studied.
In the complex synthesis process, the design of new type structures of lanthanide clusters with high nuclearity provides an opportunity to understand the nature of magnetic dynamics.
Homochiral mononuclear complexes (Et3NH)[Dy((R,R)/(S,S)-3-NO2salcy)2] (1R/1S), where 3-NO2salcyH2 is N,N′-(1,2-cyclohexanediylethylene)bis(3-nitrosalicylideneiminato), are reported, and their optical and magnetic behaviors are studied.
AC measurements revealed field-induced single-ion magnet behavior of Dy and Er Kramers ion complexes. The properties of complexes were rationalized by superposition CF model.
We report two novel chair-shaped hexanuclear DyIII complexes with different polyhydroxy Schiff-base ligands. Both complexes are constructed with Dy3 triangular motifs as building blocks and exhibit slow magnetic relaxation behavior at low temperature.