Heteroleptic Lanthanide Complexes Coordinated by Tripodal Tetradentate Ligand: Synthesis, Structure, and Magnetic and Photoluminescent Properties

Jérome Long (1) , Dmitry Lyubov , Tatyana Mahrova (2) , Konstantin A. Lyssenko (3) , Alexander Korlyukov (3) , Yury Fedorov (3) , Ekaterina Yu. Chernikova (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 the synthesis, structures, magnetic and luminescent properties of a series of heteroleptic lanthanide complexes based on a tripodal tetradentate ligand [Ln(Tpma)(NO 3) 3 ]•nMeCN (Ln = Eu (1), Tb (2), Dy (3), Er (4), n = 0.5; Yb (5), n = 0; Tpma = tris((1H-pyrazol-1-yl)methyl)amine). The europium, terbium and dysprosium analogues exhibit a lanthanide-based luminescence, while dysprosium, erbium and ytterbium compounds show a field-induced slow relaxation of their magnetization involving Raman and direct processes.

Domaines: Chimie de coordination

Jérome Long, Dmitry Lyubov, Tatyana Mahrova, Konstantin A. Lyssenko, Alexander Korlyukov, et al.. Heteroleptic Lanthanide Complexes Coordinated by Tripodal Tetradentate Ligand: Synthesis, Structure, and Magnetic and Photoluminescent Properties. Crystal Growth & Design, 2020, 20 (8), pp.5184-5192. ⟨10.1021/acs.cgd.0c00410⟩. ⟨hal-02919790⟩