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Ambient-temperature isolation of a compound with a Boron-Boron triple bond
journal contributionposted on 2023-06-08, 15:41 authored by Holger Braunschweig, Rian D Dewhurst, Kai Hammond, Jan Mies, Krzysztof Radacki, Alfredo VargasAlfredo Vargas
Homoatomic triple bonds between main-group elements have been restricted to alkynes, dinitrogen, and a handful of reactive compounds featuring trans-bent heavier elements of groups 13 and 14. Previous attempts to prepare a compound with a boron-boron triple bond that is stable at ambient temperature have been unsuccessful, despite numerous computational studies predicting their viability. We found that reduction of a bis(N-heterocyclic carbene)-stabilized tetrabromodiborane with either two or four equivalents of sodium naphthalenide, a one-electron reducing agent, yields isolable diborene and diboryne compounds. Crystallographic and spectroscopic characterization confirm that the latter is a halide-free linear system containing a boron-boron triple bond.
PublisherAmerican Association for the Advancement of Science
Department affiliated with
- Chemistry Publications
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