Synthesis and Reactivity of Tris(pentafluoroethyl)gallium Compounds

Niemann M, Neumann B, Stammler H-G, Hoge B (2019)
European Journal of Inorganic Chemistry 2019(30): 3462-3475.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The reaction of [GaCl3(OEt2)(n)] with LiC2F5 surprisingly leads to the formation of the anion [Ga(C2F5)(3)Cl](-). The obtained lithium and tetraphenylphosphonium salts are useful starting materials for new pentafluoroethylgallium compounds. [PPh4][Ga(C2F5)(3)Cl] was conveniently transformed into [PPh4][Ga(C2F5)(3)X] (X = F, Br, I) with HF, NaBr, and NaI. Treatment of [Li(OEt2)(n)][Ga(C2F5)(3)Cl] with aqueous hydrogen chloride gives rise to the tris(pentafluoroethyl)gallane adduct [Ga(C2F5)(3){(OH2)(OEt2)}]. Thermolysis of [Li(OEt2)(n)][Ga(C2F5)(3)Cl] affords another tris(pentafluoroethyl)gallane adduct, [Ga(C2F5)(3)(OEt2)], which can be converted into [Ga(C2F5)(3)(dmap)] (dmap = 4-dimethylaminopyridine). [Ga(C2F5)(3)(OEt2)] as well as [Ga(C2F5)(3)(dmap)] react with [PPh4]Cl to [PPh4][Ga(C2F5)(3)Cl] and with HF to [HDMAP][Ga(C2F5)(3)F]. Both [Ga(C2F5)(3)(OEt2)] and [Ga(C2F5)(3)(dmap)] are precursors for the previously reported weakly coordinating anion [Ga(C2F5)(4)](-). Characterizations of the new compounds were carried out by NMR and IR spectroscopy, mass spectrometry, X-ray diffraction and elemental analyses.
Stichworte
Weakly coordinating anions; Lewis acids; Fluorinated ligands; Fluorine; Gallium
Erscheinungsjahr
2019
Zeitschriftentitel
European Journal of Inorganic Chemistry
Band
2019
Ausgabe
30
Seite(n)
3462-3475
ISSN
1434-1948
eISSN
1099-0682
Page URI
https://pub.uni-bielefeld.de/record/2937347

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Niemann M, Neumann B, Stammler H-G, Hoge B. Synthesis and Reactivity of Tris(pentafluoroethyl)gallium Compounds. European Journal of Inorganic Chemistry . 2019;2019(30):3462-3475.
Niemann, M., Neumann, B., Stammler, H. - G., & Hoge, B. (2019). Synthesis and Reactivity of Tris(pentafluoroethyl)gallium Compounds. European Journal of Inorganic Chemistry , 2019(30), 3462-3475. doi:10.1002/ejic.201900486
Niemann, M., Neumann, B., Stammler, H. - G., and Hoge, B. (2019). Synthesis and Reactivity of Tris(pentafluoroethyl)gallium Compounds. European Journal of Inorganic Chemistry 2019, 3462-3475.
Niemann, M., et al., 2019. Synthesis and Reactivity of Tris(pentafluoroethyl)gallium Compounds. European Journal of Inorganic Chemistry , 2019(30), p 3462-3475.
M. Niemann, et al., “Synthesis and Reactivity of Tris(pentafluoroethyl)gallium Compounds”, European Journal of Inorganic Chemistry , vol. 2019, 2019, pp. 3462-3475.
Niemann, M., Neumann, B., Stammler, H.-G., Hoge, B.: Synthesis and Reactivity of Tris(pentafluoroethyl)gallium Compounds. European Journal of Inorganic Chemistry . 2019, 3462-3475 (2019).
Niemann, Mark, Neumann, Beate, Stammler, Hans-Georg, and Hoge, Berthold. “Synthesis and Reactivity of Tris(pentafluoroethyl)gallium Compounds”. European Journal of Inorganic Chemistry 2019.30 (2019): 3462-3475.