Single and Double Hydroboration of B-B Triple Bonds and Conver- gent Routes to a Cationic Tetraborane

Please always quote using this URN: urn:nbn:de:bvb:20-opus-188632
  • A compound with a boron-boron triple bond is shown to undergo stepwise hydroboration reactions with catecholborane to yield an unsymmetrical hydro(boryl)diborene and a 2,3-dihydrotetraborane. Abstraction of H– from the latter compound produces an unusual cationic, planar tetraborane with a hydrogen atom bridging the central B2 moiety. Spectroscopic and crystallographic data and DFT calculations support a ‘protonated diborene’ structure for this compound, which can also be accessed via direct protonation of the corresponding diborene.

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Author: Tobias Brückner, Tom E. Stennett, Merlin Heß, Holger Braunschweig
Document Type:Preprint
Faculties:Fakultät für Chemie und Pharmazie / Institut für Anorganische Chemie
Parent Title (English):Journal of the American Chemical Society
Year of Completion:2019
Source:Journal of the American Chemical Society 2019, 141, 37, 14898-14903. doi:10.1021/jacs.9b07991
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 54 Chemie / 546 Anorganische Chemie
Tag:boron; hydroboration; multiple bonding
Release Date:2019/10/15
This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in Journal of the American Chemical Society, copyright © American Chemical Society after peer review. To access the final edited and published work see
EU-Project number / Contract (GA) number:669054
Licence (German):License LogoDeutsches Urheberrecht