A new family of diamagnetic macrocyclic Fe(II) compounds exhibiting the LIESST effect at high temperatures.

Hongfeng Wang (1, 2) , Cédric Desplanches (1) , Philippe Dagault (1) , Jean-François Létard (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 HUST - Huazhong University of Science and Technology [Wuhan]

The photomagnetic properties of a new Fe(ii) macrocyclic family [Fe(LxyzN5)(CN)2]·nH2O were investigated with respect to the T(LIESST) versus T1/2 relationship. These compounds are diamagnetic below 400 K with T(LIESST) values above 100 K, which indicates that this family presents an unconventional LIESST effect that is much higher than the expected T0 = 180 K line for macrocyclic complexes.

Domaines: Chimie de coordination; Matériaux

Hongfeng Wang, Cédric Desplanches, Philippe Dagault, Jean-François Létard. A new family of diamagnetic macrocyclic Fe(II) compounds exhibiting the LIESST effect at high temperatures.. Dalton Transactions, 2014, 43 (41), pp.15346-15350. ⟨10.1039/c4dt01837k⟩. ⟨hal-01074580⟩