Conclusions
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1.
Tetrabutylammonium borohydride was obtained by the exchange reaction of tetrabutylammonium bromide with excess sodium borohydride in ether isopropyl alcohol or benzene medium.
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2.
Tetrabutylammonium borohydride aluminate, [(C4H9)4N] [Al(BH4)4], was synthesized by the reaction of the tetrabutylammonium and aluminum borohydrides.
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3.
In the series of complex hydrides, containing the anions BH −4 and [Al(BH4)4]− and the cation [R4N]+, the solubility in nonpolar solvents increases in a steady manner, while the melting point decreases, with increase in the length of the hydrocarbon chain R.
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Literature cited
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1354–1356, June, 1971.
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Titov, L.V., Gavrilova, L.A., Eremin, E.R. et al. Tetrabutylammonium borohydride and its complex with aluminum borohydride. Russ Chem Bull 20, 1266–1268 (1971). https://doi.org/10.1007/BF00855404
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DOI: https://doi.org/10.1007/BF00855404