Abstract
(Di)radikal in Reinkultur: Rechnungen zufolge hat die Stammverbindung 2,4-Diborata-1,3-diphosphoniocyclobutan-1,3-diyl (I) eine vernachlässigbare Energielücke zwischen Singulett- und Triplettform (1.2 kcal mol−1) und könnte als perfektes Diradikal sowohl disrotatorische als auch konrotatorische Ringschlüsse zu den Bicyclo[1.1.0]butan-Derivaten I′ und I′′ eingehen. Ein Derivat vom Typ I′ wurde synthetisiert. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2001/2008/z704008_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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