Synthesis of Homo‐Metallic Heavier Analogues of Cyclobutene and the Cyclobutadiene Dianion. - Zheng, Xiongfei; Crumpton, Agamemnon E.; Protchenko, Andrey V.; Ellwanger, Mathias A.; Heilmann, Andreas; Aldridge, Simon (Chemistry - A European Journal, 2023)