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- W1974484328 abstract "The synthesis of hexa(isobutyl)dialanate with an aluminium-aluminium bond from tri(isobutyl)alane and potassium is described in the literature. We have repeated this reaction under the conditions given, but have not been able to trace the dialanate. Instead, the expected product of disproportionation, potassium tetra(isobutyl)alanate (1) was formed and isolated as the only compound. The crystal structure of 1 showed layers with the α-carbon atoms of the alanate anions bound to three different potassium cations. Furthermore, we have observed interactions of methyl group CH σ-bonds with the alkali metal. Die Umsetzung des Tri(isobutyl)alans mit Kalium soll nach Literaturangaben zu einem Dialanat mit Aluminium-Aluminium-Bindung führen. Wir wiederholten these Reaktion unter den angegebenen Bedingungen, fanden aber keinen Hinweis auf die genannte Verbindung. Stattdessen wird ausschließlich das erwartete Disproportionierungsprodukt Kalium[tetra(isobutyl)alanat] (1) isoliert. Die Kristallstruktur von 1 besteht aus Schichten, in denen die Alanateinheiten durch Wechselwirkungen von α-Kohlenstoffatomen mit Kaliumionen verbrückt sind. Zusätzlich werden enge Kontakte zwischen Kalium und CH-σ-Bindungen von Methylgruppen beobachtet" @default.
- W1974484328 created "2016-06-24" @default.
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- W1974484328 date "1992-04-01" @default.
- W1974484328 modified "2023-10-12" @default.
- W1974484328 title "Die reaktion des tri(isobutyl)alans mit kalium—eine Neuuntersuchung; kristallstruktur des kalium[tetra(isobutyl)alanats]" @default.
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- W1974484328 doi "https://doi.org/10.1016/0022-328x(92)83080-2" @default.
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