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  Brominated [20]silafulleranes: pushing the limits of steric loading

Bamberg, M., Gasevic, T., Bolte, M., Virovets, A., Lerner, H.-W., Grimme, S., et al. (2023). Brominated [20]silafulleranes: pushing the limits of steric loading. Chemical Communications, 59(48), 7459-7462. doi:10.1039/D3CC02142D.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000D-4BA6-4 Version Permalink: https://hdl.handle.net/21.11116/0000-000D-4BA7-3
Genre: Journal Article

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 Creators:
Bamberg, Michael1, Author
Gasevic, Thomas2, Author
Bolte, Michael1, Author
Virovets, Alexander1, Author
Lerner, Hans-Wolfram1, Author
Grimme, Stefan2, Author
Bursch, Markus3, Author           
Wagner, Matthias1, Author
Affiliations:
1Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt am Main, Max-von-Laue-Straße 7, 60438 Frankfurt am Main, Germany, ou_persistent22              
2Mulliken Center for Theoretical Chemistry, Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstraße 4, 53115 Bonn, Germany, ou_persistent22              
3Research Department Neese, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_2541710              

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 Abstract: Starting from the perhydrogenated silafullerane [nBu4N][Cl@Si20(SiH3)12H8], treatment with BBr3 leads to partially and exhaustively brominated clusters, [nBu4N][Cl@Si20(SiBr2H)12Br8] (120 eq. BBr3, room temperature, 30 min) and [nBu4N][Cl@Si20(SiBr3)12Br8] (300 eq. BBr3, 130 °C, 3 d). Perbromination is accompanied by a massively increased steric strain on the cluster surface, which explains why our approach achieves regioselective derivatization of the Si32 framework when mild conditions are maintained. Partial Br/H exchange on [nBu4N][Cl@Si20(SiBr2H)12Br8] (30 eq. iBu2AlH, room temperature, 16 h) affords [nBu4N][Cl@Si20(SiH3)12Br8].

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Language(s): eng - English
 Dates: 2023-05-022023-05-232023-06-18
 Publication Status: Issued
 Pages: 4
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1039/D3CC02142D
 Degree: -

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Title: Chemical Communications
  Abbreviation : Chem. Commun.
Source Genre: Journal
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Publ. Info: Cambridge, UK : Royal Society of Chemistry
Pages: - Volume / Issue: 59 (48) Sequence Number: - Start / End Page: 7459 - 7462 Identifier: ISSN: 1359-7345
CoNE: https://pure.mpg.de/cone/journals/resource/954928495413