Boranyl-Functionalized [Ge9] Clusters : Providing the Idea of Intramolecular Ge/B Frustrated Lewis Pairs

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2021-02-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
6
2648-2653
Series
Angewandte Chemie - International Edition, Volume 60, issue 5
Abstract
The unique three-dimensional structure of spherical, homoatomic nine-atom germanium clusters opens various possibilities for the spatial arrangement of functional groups. Ligands comprising lone pairs have recently been introduced in the cluster sphere, and we now report the addition of a boranyl group to the cluster featuring a Ge−B exo-cluster bond. The reaction of the twofold-silylated cluster [Ge9{Si(TMS)3}2]2− (TMS=trimethylsilyl) with 2-chloro-1,3,2-diazaborolidines DABR-Cl leads to the first boranyl-functionalized [Ge9] clusters [Ge9{Si(TMS)3}2DABR]− (R=methyl (1 a), iso-propyl (2 a), ortho-tolyl (3 a)). The anions 2 a and 3 a were structurally characterized as [NHCDippCu]+ complexes (NHCDipp=1,3-di(2,6-diisopropylphenyl)imidazolylidine) through single crystal X-ray structure determination. Quantum-chemical calculations manifest the frustrated Lewis pair (FLP) character of the boranyl-functionalized cluster [Ge9{Si(TMS)3}2BCy2]− (4 a).
Description
Keywords
boranes, cluster compounds, germanium, Lewis base, Zintl cluster
Other note
Citation
Wallach , C , Geitner , F S , Karttunen , A J & Fässler , T F 2021 , ' Boranyl-Functionalized [Ge 9 ] Clusters : Providing the Idea of Intramolecular Ge/B Frustrated Lewis Pairs ' , Angewandte Chemie - International Edition , vol. 60 , no. 5 , pp. 2648-2653 . https://doi.org/10.1002/anie.202012336