Preprints in chemistry: Benefits? Risks? Tradeoff? The outcomes of our team's nearly six-year journey through preprint publishing, show evidence that preprinting research substantially benefits both early career and senior researchers in t...
Artikel
Imidazolyl‐Substituted Benzo‐ and Naphthodithiophenes as Precursors for the Synthesis of Transient Open‐Shell Quinoids
Von Wiley-VCH zur Verfügung gestellt
A series of sulfur-containing heteroacenes were synthesized and utilized as precursors to imidazolylidene-substituted quinoids. The transiently formed quinoids exhibit small singlet-triplet gaps and exist as open-shell molecules, as evidenced by EPR spectroscopy and quantum chemical calculations.
Abstract
The synthesis of three novel imidazolyl-substituted sulfur-containing heteroacenes is reported. These heteroacenes consisting of annelated benzo- and naphthothiophenes serve as precursors for the generation of open-shell quinoid heteroacenes by oxidation with alkaline ferric cyanide. Spectroscopic and computational experiments support the formation of reactive open-shell quinoids, which, however, quickly produce paramagnetic polymeric material.
Zum VolltextÜberprüfung Ihres Anmeldestatus ...
Wenn Sie ein registrierter Benutzer sind, zeigen wir in Kürze den vollständigen Artikel.