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A tetramesityl derivative of hitherto unknown tetracyclopenta[def,jkl,pqr,vwx]tetraphenylene (TCPTP), which is a potential tetraradicaloid hydrocarbon, was synthesized. Theoretical calculations based on spin‐flip time‐dependent density functional theory predict that the closed‐shell D2h form of TCPTP is more stable than the open‐shell D4h form with its slightly tetraradical character. The tetramesityl...
Ein potentieller tetraradikaloider Kohlenwasserstoff wurde von Y. Tobe et al. aufgebaut. Wie in der Zuschrift auf S. 2118 ff. beschrieben, zeichnet sich das Tetramesitylderivat von Tetracyclopenta[def,jkl,pqr,vwx]tetraphenylen durch eine außergewöhnliche Antiaromatizität und eine kleine HOMO‐LUMO‐Lücke aus. In Lösung und im Kristall liegt die Verbindung – in Übereinstimmung mit theoretischen Studien...
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