Directly linked corrole dimer 1, which has a planar cyclooctatetraene in its core, has been synthesized from 2-borylcorrole in excellent yield. 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) oxidation of 1 provides its oxidized form 4, which has two NH protons in each corrole core. Dicorrole 4 and its Zn(II) complex 6 exhibit broad electronic absorption spectra, and magnetic measurement has revealed their biradicaloid character.
Lichte Momente: Einblicke in den Mechanismus der photochemischen Vorgänge und der Ladungsdynamik eines kovalenten, organischen Donor‐Akzeptor‐Gerüsts wurden mithilfe zeitauflösender transienter Absorptions‐ und Elektronenspinresonanz‐Spektroskopie erhalten (siehe Bild). Das organische Gerüst ermöglicht einen ultraschnellen Elektronentransfer sowie eine weitreichende Ladungsdelokalisierung und eine Langzeit‐Ladungstrennung.
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