Isolation and Characterization of Crystalline,Neutral Diborane(4) Radicals |
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| Authors: | Jens Seufert Eileen Welz Dr. Ivo Krummenacher Valerie Paprocki Julian Böhnke Stephan Hagspiel Dr. Rian D. Dewhurst Prof. Dr. Reinhold Tacke Prof. Dr. Bernd Engels Prof. Dr. Holger Braunschweig |
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| Affiliation: | 1. Institute for Inorganic Chemistry, Julius-Maximilians-Universit?t Würzburg, Würzburg, Germany;2. Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universit?t Würzburg, Würzburg, Germany;3. Institute for Physical and Theoretical Chemistry, Julius-Maximilians-Universit?t Würzburg, Würzburg, Germany |
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| Abstract: | Diaryldihalodiboranes(4) were reacted with bis(amidinato)‐ and bis(guanidinato)silylenes to generate the first neutral diborane‐centered radicals. These formally non‐aromatic 5π electron systems are stable in the solid state as well as in solution and were characterized by solid‐state structure determination, high‐resolution mass spectrometry, and EPR spectroscopy. The reactivity of one of these radicals with the oxidant 1,4‐benzoquinone led to ring‐opening and B?O bond formation. |
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| Keywords: | boron– boron bonds diboranes heterocycles radicals reduction |
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