Front Cover: Solution and Solvent‐Free Stopper Exchange Reactions for the Preparation of Pillar[5]arene‐containing [2] and [3]Rotaxanes (Chem. Eur. J. 12/2024).

This article, titled "Solution and Solvent-Free Stopper Exchange Reactions for the Preparation of Pillar[5]arene-Containing [2] and [3]Rotaxanes," explores the movements and distortions of the pillar[5]arene moiety in a rotaxane. The researchers used variable-temperature NMR investigations and density functional theory calculations to gain a complete understanding of these motions. The article provides more information on this research and can be found in Chemistry - A European Journal. The authors of the article are Nihed Becharguia, Iwona Nierengarten, Jean-Marc Strub, Sarah Cianférani, Marine Rémy, Emeric Wasielewski, Rym Abidi, and Jean-François Nierengarten. [Extracted from the article]