- Source: Aluminium borohydride
Aluminium borohydride, also known as aluminium tetrahydroborate, is the chemical compound with the formula Al(BH4)3. It is a volatile pyrophoric liquid which is used as a reducing agent in laboratories. Unlike most other metal–borohydrides, which are ionic structures, aluminium borohydride is a covalent compound.
Preparation
Aluminium borohydride is formed by the reaction between sodium borohydride with aluminium chloride:
3 NaBH4 + AlCl3 → Al(BH4)3 + 3 NaCl
or as the non-pyrophoric tetrahydrofuran (THF) adduct, by the analogous reaction of calcium borohydride and aluminium chloride in THF:
3 Ca(BH4)2 + 2 AlCl3 → 3 CaCl2 + 2 Al(BH4)3
Reactions
Like all borohydrides, this compound is a reducing agent and hydride donor. It reacts with water to give elemental hydrogen gas, and reduces carboxylic esters, aldehydes, and ketones to alcohols.
References
Further reading
Fletcher, Edward; Foster, Hampton; Straight, David (1959). "Aluminum Borohydride and Mixtures with Hydrocarbons in Jet Engine Combustor Ignition". Industrial & Engineering Chemistry. 51 (11): 1389. doi:10.1021/ie50599a044.
Hinkamp, James B.; Hnizda, Vincent (1955). "Aluminum Borohydride Preparation". Industrial & Engineering Chemistry. 47 (8): 1560. doi:10.1021/ie50548a032.
Kata Kunci Pencarian:
- Litium borohidrida
- Natrium borohidrida
- Kamus rumus kimia
- Aluminium borohydride
- Lithium borohydride
- Sodium borohydride
- Lithium aluminium hydride
- Uranium borohydride
- Diborane
- Carbonyl reduction
- Sodium aluminium hydride
- Organic redox reaction
- Boranes
