Cover Feature: Impact of Heterocycle Annulation on NIR Absorbance in Quinoid Thioacene Derivatives (Chem. Eur. J. 23/2022)

Abstract

The cover feature picture shows the successive expansion of a quinoid imidazolylidene‐substituted central sulfur‐containing heterocyclic core, which is accompanied by a continuous decrease in the HOMO/LUMO gap. This ultimately results in bench‐stable, open‐shell diradicals, as evidenced by the small singlet‐triplet gap. More information can be found in the Research Article by J. Paradies et al. (DOI: 10.1002/chem.202200478).