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Das neuartige neutrale Radikal (Me2‐cAAC)2AlCl2 (2) wird durch cyclische Alkylaminocarbene (cAACs) stabilisiert. Die Synthese erfolgte in Gegenwart eines weiteren Äquivalents Me2‐cAAC durch Reduktion des Addukts Me2‐cAAC:AlCl3 (1) mit KC8. Anhand der Kristallstruktur zeigt sich, dass die beiden Carbene, die an das Aluminiumatom gebunden sind, deutlich unterschiedliche Al‐C‐Bindungen aufweisen. Dies...
A neutral C4 cumulene 1 that includes a cyclic alkyl(amino) carbene (cAAC), its air‐stable radical cation 1.+, and dication 12+ have been synthesized. The redox property of 1.+ was studied by cyclic voltammetry. EPR and theoretical calculations show that the unpaired electron in 1.+ is mainly delocalized over the central C4 backbone. The commercially available CBr4 is utilized as a source of dicarbon...
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