Increasing the Reactivity of Diborenes: Derivatization of NHC- Supported Dithienyldiborenes with Electron-Donor Groups
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- A series of NHC-supported 1,2-dithienyldiborenes was synthesized from the corresponding (dihalo)thienylborane NHC precursors. NMR and UV-vis spectroscopic data, as well as X-ray crystallographic analyses, were used to assess the electronic and steric influences on the B=B double bond of various NHCs and electron-donating substituents on the thienyl ligands. Crystallographic data showed that the degree of coplanarity of the diborene core and thienyl groups is highly dependent on the sterics of the substituents. Furthermore, any increase in theA series of NHC-supported 1,2-dithienyldiborenes was synthesized from the corresponding (dihalo)thienylborane NHC precursors. NMR and UV-vis spectroscopic data, as well as X-ray crystallographic analyses, were used to assess the electronic and steric influences on the B=B double bond of various NHCs and electron-donating substituents on the thienyl ligands. Crystallographic data showed that the degree of coplanarity of the diborene core and thienyl groups is highly dependent on the sterics of the substituents. Furthermore, any increase in the electron- donating ability of the substituents resulted in the destabilization of the HOMO and greater instability of the resulting diborenes.…
Autor(en): | Dominic Auerhammer, Merle Arrowsmith, Philipp Bissinger, Holger BraunschweigORCiD, Theresa Dellermann, Thomas Kupfer, Carsten Lenczyk, Dipak Roy, Marius Schäfer, Christoph Schneider |
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URN: | urn:nbn:de:bvb:20-opus-155419 |
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): | Chemistry, A European Journal |
Erscheinungsjahr: | 2017 |
Originalveröffentlichung / Quelle: | Chemistry European Journal. doi:10.1002/chem.201704669 |
DOI: | https://doi.org/10.1002/chem.201704669 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 54 Chemie / 546 Anorganische Chemie |
Freie Schlagwort(e): | N-heterocyclic carbenes; diborenes; electron donors; spectroscopy; structural analysis |
Datum der Freischaltung: | 06.12.2017 |
EU-Projektnummer / Contract (GA) number: | 669054 |
OpenAIRE: | OpenAIRE |
Anmerkungen: | This is the pre-peer reviewed version of the following article: Auerhammer, D., Arrowsmith, M., Bissinger, P., Braunschweig, H., Dellermann, T., Kupfer, T., Lenczyk, C., Roy, D. K., Schäfer, M. and Schneider, C. (2017), Increasing the Reactivity of Diborenes: Derivatization of NHC-Supported Dithienyldiborenes with Electron-Donor Groups. Chem. Eur. J.. doi:10.1002/chem.201704669, which has been published in final form at doi:10.1002/chem.201704669. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
Lizenz (Deutsch): | Deutsches Urheberrecht |