Metalloligands for designing single-molecule and single-chain magnets

Jean- Pierre Costes (1) , Laure Vendier (1) , Wolfgang Wernsdorfer (2)

1 LCC - Laboratoire de chimie de coordination
2 NEEL - QuantECA - Circuits électroniques quantiques Alpes

2-Hydroxy-N-{2-[2-hydroxyethyl)amino]ethyl}benzamide (L(1)H(3)) and 2-hydroxy-N-{2-[2-hydroxybutyl)amino]ethyl}benzamide (L(2)H(3)) ligands coordinate to copper ions to give anionic metalloligands, L(1)Cu(-) and L(2)Cu(-), after deprotonation of their amide, alcohol and phenol functions. In presence of ancillary ligands as diketones, these metalloligands react with lanthanide salts to yield tetranuclear [Cu-Ln](2) complexes while in presence of lanthanide salts alone, L(1)Cu(-) gives 1D chains of tetranuclear entities linked through the Ln ions. The micro-SQUID data evidence the SMM behavior of the tetranuclear Tb complexes and the SCM behavior of the Tb chain derivative

Domaines: Physique [physics]

Jean- Pierre Costes, Laure Vendier, Wolfgang Wernsdorfer. Metalloligands for designing single-molecule and single-chain magnets. Dalton Transactions, 2010, 39 (20), pp.4886-4892. ⟨10.1039/B926739E⟩. ⟨hal-00981471⟩