ChemistryNature Chemistry
Rupturing aromaticity by periphery overcrowding
P. K. Saha, A. Mallick, et al.
This pioneering study reveals how increasing steric bulk around tropylium rings creates contorted conformations, balancing strain relief and aromatic stabilization. As strain escalates, it prompts a fascinating transformation to a non-aromatic bicyclic Dewar tropylium in rapid equilibrium with its aromatic counterpart. Join the authors from Durham University in exploring the boundaries of aromatic carbocycles and the nature of aromaticity.
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