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.

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