Curved Aromaticity of a Corannulene‐Based Neutral Radical: Crystal Structure and 3 D Unbalanced Delocalization of Spin

Abstract

A well-rounded radical: A stable corannulene-based neutral radical with curved π conjugation was synthesized, and the crystal structure was determined. Unbalanced delocalized electronic spin on the three-dimensional π surface of the corannulene moiety (see spin-density distribution) demonstrates a sizable intermolecular exchange interaction and curved aromaticity.