Inside Back Cover: A Novel Synthetic Pathway to Lanthanide Triple-Decker Complexes: Selective Expansion of a Sandwich Complex by an Insertion Reaction (Angew. Chem. 25/2025)

Abstract

A groundbreaking new reaction pathway is disclosed, in which for the first time a lanthanide half-sandwich unit inserts into an existing sandwich complex. As result triple decker complexes are formed, which are classical sandwich complexes with the lanthanide sandwiched between cyclic aromatic carbon ligands. The unique feature of the compounds introduced in this work is the combination of the two largest aromatic all-carbon rings known in coordination chemistry—the 8- and 9-membered rings—into lanthanide triple-decker sandwich compounds, as demonstrated by Florian Weigend, Peter W. Roesky et al. in their Research Article (e202503942).