Tris(pentafluoroethyl)germane: Deprotonation and Hydrogermylation Reactions

Pelzer S, Neumann B, Stammler H-G, Ignat'ev N, Hoge B (2017)
CHEMISTRY-A EUROPEAN JOURNAL 23(50): 12233-12242.

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Abstract
Owing to the highly electron-withdrawing C2F5 groups, the tris(pentafluoroethyl)germane (C2F5)(3)GeH represents an interesting Bronsted acidic compound. The germane is accessible by the treatment of the corresponding halogenogermanes (C2F5)(3)GeX (X= Cl, Br) with Bu3SnH. After clarifying its molecular structure in the solid state by X-ray diffraction, the acidity of (C2F5)(3)GeH was examined by treatment with different bases, for example, 1,8-bis(dimethylamino) naphthalene. The resulting germanate(II) ion [Ge(C2F5)(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(C2F5)(3)](-) also gives information about the pi-acceptor properties of the [Ge(C2F5)(3)](-) ligand. Furthermore, hydrogermylation reactions of (C2F5)(3)GeH with alkynes afforded different stereoisomers (alpha,beta-cis, beta-trans) depending on the respective reaction conditions and substrates.
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Pelzer S, Neumann B, Stammler H-G, Ignat'ev N, Hoge B. Tris(pentafluoroethyl)germane: Deprotonation and Hydrogermylation Reactions. CHEMISTRY-A EUROPEAN JOURNAL. 2017;23(50):12233-12242.
Pelzer, S., Neumann, B., Stammler, H. - G., Ignat'ev, N., & Hoge, B. (2017). Tris(pentafluoroethyl)germane: Deprotonation and Hydrogermylation Reactions. CHEMISTRY-A EUROPEAN JOURNAL, 23(50), 12233-12242. doi:10.1002/chem.201700634
Pelzer, S., Neumann, B., Stammler, H. - G., Ignat'ev, N., and Hoge, B. (2017). Tris(pentafluoroethyl)germane: Deprotonation and Hydrogermylation Reactions. CHEMISTRY-A EUROPEAN JOURNAL 23, 12233-12242.
Pelzer, S., et al., 2017. Tris(pentafluoroethyl)germane: Deprotonation and Hydrogermylation Reactions. CHEMISTRY-A EUROPEAN JOURNAL, 23(50), p 12233-12242.
S. Pelzer, et al., “Tris(pentafluoroethyl)germane: Deprotonation and Hydrogermylation Reactions”, CHEMISTRY-A EUROPEAN JOURNAL, vol. 23, 2017, pp. 12233-12242.
Pelzer, S., Neumann, B., Stammler, H.-G., Ignat'ev, N., Hoge, B.: Tris(pentafluoroethyl)germane: Deprotonation and Hydrogermylation Reactions. CHEMISTRY-A EUROPEAN JOURNAL. 23, 12233-12242 (2017).
Pelzer, Stefanie, Neumann, Beate, Stammler, Hans-Georg, Ignat'ev, Nikolai, and Hoge, Berthold. “Tris(pentafluoroethyl)germane: Deprotonation and Hydrogermylation Reactions”. CHEMISTRY-A EUROPEAN JOURNAL 23.50 (2017): 12233-12242.
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Tris(pentafluoroethyl)stannane: Tin Hydride Chemistry with an Electron-Deficient Stannane.
Wiesemann M, Niemann M, Klösener J, Neumann B, Stammler HG, Hoge B., Chemistry 24(11), 2018
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