Cyclic and Macrocyclic Molecules Containing Silicon or Tin – Synthesis of Highly Rigid, Potentially Lewis‐Acidic Cryptands. - Aders, Niklas; Lamm, Jan‐Hendrik; Wels, Katharina; Bernhardt, Sophie; Neumann, Beate; Stammler, Hans‐Georg; Mitzel, Norbert W. (European Journal of Inorganic Chemistry, 2023)