A Novel Synthetic Pathway to Lanthanide Triple‐Decker Complexes: Selective Expansion of a Sandwich Complex by an Insertion Reaction. - Uhlmann, Cedric; Münzfeld, Luca; Hauser, Adrian; Gillhuber, Sebastian; Hädinger, Pauline; Leskov, Maxim; Weigend, Florian; Roesky, Peter W. (Angewandte Chemie, 2025)