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The synthesis and characterization of sterically unencumbered homoleptic organouranium aryl complexes containing U−C σ‐bonds has been of interest to the chemical community for over 70 years. Reported herein are the first structurally characterized, sterically unencumbered homoleptic uranium (IV) aryl‐ate species of the form [U(Ar)6]2− (Ar=Ph, p‐tolyl, p‐Cl‐Ph). Magnetic circular dichroism (MCD) spectroscopy...
Enantiomerenreine Metallahelicene wurden durch Cyclometallierung von 2‐pyridylsubstituierten Benzophenanthrenen und anschließende Enantiomerentrennung durch HPLC an chiraler Phase erhalten. Sie sind bei Raumtemperatur rote Leuchtstoffe, und ihre chiroptischen Eigenschaften können durch Oxidation des Metallzentrums zur Oxidationsstufe IV moduliert werden.
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