Get access

The Bicorannulenyl Dianion: A Charged Overcrowded Ethylene


  • Financial support from the National Science Foundation (NSF) and from The Lise Meitner-Minerva Center for Computational Quantum Chemistry is gratefully acknowledged.


original image

Super bowl: Bicorannulenyl, a large biaryl composed of two corannulene bowls, effectively becomes an overcrowded ethylene upon reduction to form a dianion (see picture). DFT calculations and NMR spectroscopic experiments reveal the double-bond character of the connection between the two bowls. Three stable diastereomers that interconvert through bowl inversions and central bond rotations were shown to exist.

Get access to the full text of this article