Back Cover: Generation and Applications of the Hydroxide Trihydrate Anion, [OH(OH2)3]−, Stabilized by a Weakly Coordinating Cation (Angew. Chem. Int. Ed. 41/2019)

The hydroxide trihydrate anion was generated for the first time and structurally characterized thanks to the use of a weakly coordinating phosphazenium counterion. As B. Hoge et al. describe in their Communication on page 14633 ff., the space‐filling phosphazenium cation represents an impregnable castle wall in protecting and stabilizing this rare anion. Under vacuum, the salt decomposes like a fragile aqueous “hydroxide soap bubble”.