Abstract
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.