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From an electron-rich diborane to an electron-poor diborene
journal contribution
posted on 2023-06-08, 19:34 authored by Julian Böhnke, Holger Braunschweig, Theresa Dellermann, William C. Ewing, Thomas Kramer, Ivo Krummenacher, Alfredo VargasAlfredo VargasThe reaction of the bisboracumulene CAAC2B2 (CAAC = 1-(2,6-diisopropylphenyl)-3,3,5,5-tetramethylpyrrolidin-2-ylidene) with a slight excess of isocyanide resulted in the complexation of the isocyanide at boron. Though this compound might be formally drawn with a lone pair on boron, these electrons are highly delocalized throughout a conjugated p- network consisting of the p-acidic CAAC and isocyanide ligands. Heating this compound to 110 °C liberated the organic periphery of both isocyanide ligands, yielding the first example of a dicyanodiborene. Cyclic voltammetry conducted on this diborene indicated the presence of reduction waves, making this compound unique among known diborenes, which are otherwise known as highly reducing.
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Publication status
- Published
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- Published version
Journal
Angewandte Chemie International EditionISSN
1433-7851Publisher
Wiley-VCH VerlagExternal DOI
Issue
15Volume
54Page range
4469-4473Department affiliated with
- Chemistry Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2015-02-19First Compliant Deposit (FCD) Date
2021-03-09Usage metrics
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