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Mono‐ and dianions of 2‐tert‐butyl‐3a2‐azapentabenzo[bc,ef,hi,kl,no]corannulene (1 a) were synthesized by chemical reduction with sodium and cesium metals, and crystallized as the corresponding salts in the presence of 18‐crown‐6 ether. X‐ray diffraction analysis of the sodium salt, [{Na+(18‐crown‐6)(THF)2}3{Na+(18‐crown‐6)(THF)}(1 a2−)2], revealed the presence of a naked dianion. In contrast, controlled...
Reduzierte Varianten stickstoffhaltiger Buckybowls mit einer schirmartigen Form wurden erstmals isoliert und charakterisiert. In ihrer Zuschrift auf S. 12235 ff. beschreiben S. Ito, K. Nozaki, M. A. Petrukhina et al., wie deren Synthese durch kontrollierte chemische Reduktion mit zwei Alkalimetallen mit unterschiedlichen Ionengrößen und Bindungseigenschaften, nämlich Natrium und Caesium, gelang.
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