Single-Molecule Magnet Behavior in Dy 3+ Half-Sandwich Complexes Based on Ene-Diamido and Cp* Ligands

Jérome Long (1) , Aleksei Tolpygin , Anton Cherkasov (2) , Konstantin A. Lyssenko (3) , Yannick Guari (1) , Joulia Larionova (1) , Alexander A. Trifonov (4)

1 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
2 Russian Acad Sci, GA Razunaev Inst Organomet Chem
3 INEOS - A. N. Nesmeyanov Institute of Organoelement Compounds
4 G. A. Razuvaev Institute of Organometallic Chemistry

We report in this communication the synthesis, structure and magnetic investigations of two new half-sandwich complexes [Dy(DAD)Cp*(THF)] (1) and [Li(THF) 3 ][Dy(DAD)Cp*Cl] (2) (Cp* = C 5 Me 5 , DAD = [2,6-iPr 2 C 6 H 3 N-CMeCMe-NC 6 H 3 iPr2-2,6). Both compounds exhibit zero-field SMM behavior but distinct relaxation dynamics originating from difference in the arrangement of Cp* and DAD ligands. The anisotropic barrier for 1 is found one order of magnitude greater than for 2.

Domaines: Chimie de coordination

Jérome Long, Aleksei Tolpygin, Anton Cherkasov, Konstantin A. Lyssenko, Yannick Guari, et al.. Single-Molecule Magnet Behavior in Dy 3+ Half-Sandwich Complexes Based on Ene-Diamido and Cp* Ligands. Organometallics, 2019, 38 (4), pp.748-752. ⟨10.1021/acs.organomet.8b00901⟩. ⟨hal-02047664⟩