Journal Article

PUBDB-2023-03845

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Brominated [20]silafulleranes: pushing the limits of steric loading

Bamberg, M.Extern* ; Gasevic, T. ; Bolte, M. ; Virovets, A.Extern* ; Lerner, H.-W. ; Grimme, S. ; Bursch, M. ; Wagner, M. (Corresponding author)Extern*

2023
Royal Society of Chemistry Cambridge

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Please use a persistent id in citations: doi:10.1039/D3CC02142D  doi:10.3204/PUBDB-2023-03845

Abstract: Starting from the perhydrogenated silafullerane [$n$Bu$_4$N][Cl@Si$_{20}$(SiH$_3$)$_{12}$H$_8$], treatment with BBr$_3$ leads to partially and exhaustively brominated clusters, [$n$Bu$_4$N][Cl@Si$_{20}$(SiBr$_2$H)$_{12}$Br$_8$] (120 eq.BBr$_3$, room temperature, 30 min) and [$n$Bu$_4$N][Cl@Si$_{20}$(SiBr$_3$)$_{12}$Br$_8$](300 eq. BBr$_3$, 130 8C, 3 d). Perbromination is accompanied by amassively increased steric strain on the cluster surface, whichexplains why our approach achieves regioselective derivatizationof the Si$_{32}$ framework when mild conditions are maintained. PartialBr/H exchange on [$n$Bu$_4$N][Cl@Si$_{20}$(SiBr$_2$H)$_{12}$Br$_8$] (30 eq. iBu$_2$AlH,room temperature, 16 h) affords [$n$Bu$_4$N][Cl@Si$_{20}$(SiH$_3$)$_{12}$Br$_8$].

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. DFG project 506550642 - Siladodecahedrane: Untersuchungen zu Reaktivität, Bindungssituation und optoelektronischen Eigenschaften (506550642) (506550642)
3. FS-Proposal: I-20220865 (I-20220865) (I-20220865)

Experiment(s):

1. PETRA Beamline P24 (PETRA III)

Appears in the scientific report 2023

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; National-Konsortium ; SCOPUS ; Web of Science Core Collection

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