The Aromatic Character of Diindeno[2,1-b:2′,1′-h]biphenylene
Author:
- 28 January 2022
- journal article
- letter
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 24 (5) , 1243-1246
Abstract
The tropicity of the title system was studied using NICS(1.7)π,zz-XY-scans and current density analysis, showing a global diatropic loop and local dia- and paratropic loops. This aromaticity picture is very different from the one proposed based on NICS(1) and HOMA ( Org. Lett. 2021, 23, 8794−8798). It is predicted that 1 should be suitable for singlet fission applications. It is concluded that local aromatic indices should not be used for the full analysis of multiring conjugated systems.Keywords
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