New Luminescent Tetranuclear Lanthanide‐based Silsesquioxane Cage‐like Architectures

Alena N. Kulakova (1, 2, 3) , Alexey N. Bilyachenko (1, 2) , Mikhail M. Levitsky (1) , Victor N. Khrustalev (2, 4) , Elena S. Shubina (1) , Gautier Félix (3) , Ekaterina Mamontova (3) , Jérôme Long (3) , Yannick Guari (3) , Joulia Larionova (3)

1 INEOS - A. N. Nesmeyanov Institute of Organoelement Compounds
2 Peoples’ Friendship University of Russia
3 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
4 ND Zelinsky Institute of Organic Chemistry [Moscow, Russia]

We report on the synthesis, structure, magnetic and luminescence properties investigations of four new cagelike lanthanide-based silsesquioxanes (Cat)2[(PhSiO1.5)8(LnO1.5)4(O)(NO2.5)6(EtOH)2(MeCN)2] (where Cat + = Et4N + , PPh4P + and Ln 3+ = Eu 3+ Tb 3+ and (Ph4P)4[(PhSiO1.5)8(TbO1.5)4(O)2(NO2.5)8]•10MeCN. They present an unusual prism-like topology of cage architectures and lanthanide-characteristic emission, which makes them the first luminescent cage-like lanthanide silsesquioxanes. One of the Tb 3+-based cages presents a magnetic spin-flip transition.

Domaines: Chimie; Chimie de coordination

Alena N. Kulakova, Alexey N. Bilyachenko, Mikhail M. Levitsky, Victor N. Khrustalev, Elena S. Shubina, et al.. New Luminescent Tetranuclear Lanthanide‐based Silsesquioxane Cage‐like Architectures. Chemistry - A European Journal, 2020, 26 (70), ⟨10.1002/chem.202003351⟩. ⟨hal-02919865⟩