The search result changed since you submitted your search request. Documents might be displayed in a different sort order.
  • search hit 4 of 16
Back to Result List

Unsymmetrical, Cyclic Diborenes and Thermal Rearrangement to a Borylborylene

Please always quote using this URN: urn:nbn:de:bvb:20-opus-160258
  • Cyclic diboranes(4) based on a chelating monoanionic, benzylphosphine linker were prepared by boron-silicon exchange between arylsilanes and B\(_2\)Br\(_4\). Coordination of Lewis bases to the remaining sp\(^2\) boron atom yielded unsymmetrical sp\(^3\)-sp\(^3\) diboranes, which were reduced with KC\(_8\) to their corresponding trans-diborenes. These compounds were studied by a combination of spectroscopic methods, X-ray diffraction and DFT calculations. PMe\(_3\)-stabilized diborene 6 was found to undergo thermal rearrangement to gem- diboreneCyclic diboranes(4) based on a chelating monoanionic, benzylphosphine linker were prepared by boron-silicon exchange between arylsilanes and B\(_2\)Br\(_4\). Coordination of Lewis bases to the remaining sp\(^2\) boron atom yielded unsymmetrical sp\(^3\)-sp\(^3\) diboranes, which were reduced with KC\(_8\) to their corresponding trans-diborenes. These compounds were studied by a combination of spectroscopic methods, X-ray diffraction and DFT calculations. PMe\(_3\)-stabilized diborene 6 was found to undergo thermal rearrangement to gem- diborene 8. DFT calculations on 8 reveal a polar boron-boron bond, and indicate that the compound is best described as a borylborylene.show moreshow less

Export metadata

Additional Services

Share in Twitter Search Google Scholar Statistics
Metadaten
Author: Tom Stennett, James Mattock, Ivonne Vollert, Alfredo Vargas, Holger BraunschweigORCiD
URN:urn:nbn:de:bvb:20-opus-160258
Document Type:Preprint
Faculties:Fakultät für Chemie und Pharmazie / Institut für Anorganische Chemie
Language:English
Parent Title (English):Angewandte Chemie, International Edition
Year of Completion:2018
Volume:57
Pagenumber:4098-4102
Source:Angewandte Chemie International Edition 2018, 57, 4098–4102. doi:10.1002/anie.201800671
DOI:https://doi.org/10.1002/anie.201800671
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 54 Chemie / 546 Anorganische Chemie
Tag:DFT calculations; boron; borylene; multiple bonds; rearrangement
Release Date:2018/04/09
EU-Project number / Contract (GA) number:669054
OpenAIRE:OpenAIRE
Note:
This is the pre-peer reviewed version of the following article: T. E. Stennett, J. D. Mattock, I. Vollert, A. Vargas, H. Braunschweig, Angew. Chem. Int. Ed. 2018, 57, 4098., which has been published in final form at DOI: 10.1002/anie.201800671. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Licence (German):License LogoDeutsches Urheberrecht