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- W2037379105 abstract "Die thermodynamischen Daten von gasförmigem GeBr, die mit Hilfe von DFT-Rechnungen erhältlich sind, zeigen, dass dieses Monohalogenid bei 1550 °C aus Germanium und HBr bei einem Gesamtdruck von 1·10—2 mbar darstellbar sein sollte. Es wird eine Apparatur beschrieben, mit der bei o.g. Bedingungen tatsächlich gasförmiges GeBr hergestellt und anschließend bei —196 °C gemeinsam mit Toluol abgeschreckt werden kann. Auf diese Weise erhält man in drei Stunden etwa 3g eines dunkelroten röntgenamorphen Feststoffes, der aufgrund der Analyse Germaniummonobromid darstellt und der ab 90 °C in Germanium und Germaniumtetrabromid disproportioniert. Synthesis of Germanium(I) Bromide. A First Step towards New Gemanium Cluster Compounds? Thermodynamic data for gaseous GeBr, derived from quantum chemical (DFT)-calculations show that this monohalide should be formed at 1550 °C as a product of the reaction of elemental germanium with HBr at 1×10—2 mbar. Herein the design of an apparatus is described in which GeBr can be synthesized under these conditions and cocondensed with toluene at —196 °C. Using this technique 3 g of a dark red X-ray amorphous solid could be prepared over a period of 3 hours and was identified to be GeBr. It is shown to undergo disproportionation at 90 °C to give elemental germanium and germanium tetrabromide." @default.
- W2037379105 created "2016-06-24" @default.
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- W2037379105 date "2002-01-01" @default.
- W2037379105 modified "2023-10-18" @default.
- W2037379105 title "Synthese von Germanium(I)-bromid. Ein erster Schritt zu neuen Clusterverbindungen des Germaniums?" @default.
- W2037379105 doi "https://doi.org/10.1002/1521-3749(200213)628:13<2914::aid-zaac2914>3.0.co;2-0" @default.
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