Unsymmetrical, Cyclic Diborenes and Thermal Rearrangement to a Borylborylene
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- 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.…
Autor(en): | Tom Stennett, James Mattock, Ivonne Vollert, Alfredo Vargas, Holger BraunschweigORCiD |
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URN: | urn:nbn:de:bvb:20-opus-160258 |
Dokumentart: | Preprint (Vorabdruck) |
Institute der Universität: | Fakultät für Chemie und Pharmazie / Institut für Anorganische Chemie |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | Angewandte Chemie, International Edition |
Erscheinungsjahr: | 2018 |
Band / Jahrgang: | 57 |
Seitenangabe: | 4098-4102 |
Originalveröffentlichung / Quelle: | Angewandte Chemie International Edition 2018, 57, 4098–4102. doi:10.1002/anie.201800671 |
DOI: | https://doi.org/10.1002/anie.201800671 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 54 Chemie / 546 Anorganische Chemie |
Freie Schlagwort(e): | DFT calculations; boron; borylene; multiple bonds; rearrangement |
Datum der Freischaltung: | 09.04.2018 |
EU-Projektnummer / Contract (GA) number: | 669054 |
OpenAIRE: | OpenAIRE |
Anmerkungen: | 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. |
Lizenz (Deutsch): | Deutsches Urheberrecht |