Inside Back Cover: Cyclo-P5 − Revisited: The Surprisingly Stable Uncoordinated Pentaphospholide Anion (Angew. Chem. 24/2025)

Abstract

The cover artwork, designed by Helen Allmendinger, visualizes a novel synthetic pathway and the first crystallographic characterization of the [cyclo-P₅]⁻ anion in the solid state. Although this compound is spectroscopically known since the 1980s it was so far prepared and handled only in solution. By complexing the alkali metal cation with [2.2.2]cryptand, the resulting salts of the [cyclo-P₅]⁻ are found to be surprisingly stable in the solid state as reported by Christian Müller et al. in their Communication (e202505853).