151. Tris(pentafluoroethyl)germane: Deprotonation and Hydrogermylation Reactions.
- Author
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Pelzer S, Neumann B, Stammler HG, Ignat'ev N, and Hoge B
- Abstract
Owing to the highly electron-withdrawing C
2 F5 groups, the tris(pentafluoroethyl)germane (C2 F5 )3 GeH represents an interesting Brønsted acidic compound. The germane is accessible by the treatment of the corresponding halogenogermanes (C2 F5 )3 GeX (X=Cl, Br) with Bu3 SnH. After clarifying its molecular structure in the solid state by X-ray diffraction, the acidity of (C2 F5 )3 GeH was examined by treatment with different bases, for example, 1,8-bis(dimethylamino)naphthalene. The resulting germanate(II) ion [Ge(C2 F5 )3 ]- serves as a germyl group transfer reagent. The reaction with main-group and transition-metal complexes or organohalides opens access to a variety of different compounds, the structures of which were mostly determined by X-ray diffraction. The corresponding tricarbonylnickelate(0) complex [(CO)3 NiGe(C2 F5 )3 ]- also gives information about the π-acceptor properties of the [Ge(C2 F5 )3 ]- ligand. Furthermore, hydrogermylation reactions of (C2 F5 )3 GeH with alkynes afforded different stereoisomers (α,β-cis, β-trans) depending on the respective reaction conditions and substrates., (© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)- Published
- 2017
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