Highlights from the article: Front Cover: Potassium Salts of 2,5-Bis(trimethylsilyl)-Germolide: Switching between Aromatic and Non-Aromatic States (Chem. Eur. J. 46/2019) This work shows for the first time clear structural evidence for the switch between the delocalized, aromatic form and the localized, diene-like isomer of a heterole anion triggered by the coordination of an alkali metal cation. This work shows for the first time clear structural evidence for the switch between the delocalized, aromatic form and the localized, diene-like isomer of a heterole anion triggered by the coordination of an alkali metal cation.