The First Boron–Tellurium Double Bond: Direct Insertion of Heavy Chalcogens into a Mn=B Double Bond

The base‐stabilized borylene [Cp(OC)2Mn=BtBu(IMe)] readily reacts with elemental chalcogens in an insertion reaction that yields borachalcone complexes [Cp(OC)2Mn‐E=BtBu(IMe)] (E=S, Se, Te). The tellurium example features the first double bond between boron and tellurium, making Te the heaviest main...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2017-12, Vol.56 (49), p.15760-15763
Main Authors: Liu, Siyuan, Légaré, Marc‐André, Auerhammer, Dominic, Hofmann, Alexander, Braunschweig, Holger
Format: Article
Language:English
Subjects:
Boron
Insertion
manganese
multiple bonds
subvalent compounds
Tellurium
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Summary:The base‐stabilized borylene [Cp(OC)2Mn=BtBu(IMe)] readily reacts with elemental chalcogens in an insertion reaction that yields borachalcone complexes [Cp(OC)2Mn‐E=BtBu(IMe)] (E=S, Se, Te). The tellurium example features the first double bond between boron and tellurium, making Te the heaviest main‐group element to make multiple bonds with boron. This unprecedented interaction has been fully investigated both experimentally and computationally. Tellurone story: Two whole decades after the characterization of the first compound featuring a boron–tellurium bond, the first example of a compound with a double B=Te bond is prepared. [Cp(OC)2Mn‐Te=BtBu(IMe)], as well as its selenium and sulfur analogues, are obtained by the direct insertion of the elemental chalcogen into a boron–manganese double bond.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201708729