Synthesis of lithium aluminum hydride

Preparation of lithium aluminum hydride

According to Wiberg (Z. Naturforsch. 7b, 59, 1952), the preparation of lithium aluminum hydride is more easy performed with aluminum bromide compared to aluminum chloride.

Preparation of lithium aluminum hydride

Preparation of lithium aluminum hydride

To 750 ml of very pure and dry ether, in the small portion 267 g aluminium bromide are added and the mixture is cooled with ice-salt mixture. 33 grams (or 4.1 moles) of coarsely ground lithium hydride is added to the tree-necked flask with a reflux condenser, a stirrer and a dropping funnel. 250 ml of ether are slowly added to cover lithium hydride and aluminum bromide solution is slowly started to run in. The addition of aluminum bromide takes one to two hours. Then the reaction mixture is refluxed for few hours. The lithium bromide and unreacted lithium hydride precipitate on cooling which are decanted through a layer of glass wool. Meanwhile, the filtrate obtained consists of an ether solution of lithium aluminium hydride saturated with lithium bromide. The solution may be stabilized by storing it over a small quantity of lithium hydride.

Handbook of preparative inorganic chemistry, by G. Brauer, Vol 1, 1963, 805-807.

IUPAC Name

aluminum;lithium;hydride

InChI

InChI=1S/Al.Li.4H/q+3;+1;4*-1

InChI Key

BJKLPLABXHXMIM-UHFFFAOYSA-N

Canonical SMILES

[H-].[H-].[H-].[H-].[Li+].[Al+3]

MeSH Synonyms

LiAlH4, lithium aluminum hydride

Depositor-Supplied Synonyms

lithium aluminium hydride, 16853-85-3, LiAlH4, lithiumaluminiumhydride, lithium-aluminiumhydride, lithiumaluminium hydride, Lithium aluminiumhydride, lithium alumimum hydride, lithium aluminium hydnde, lithium-aluminum hydride, Lithium hydride aluminum, aluminium lithium hydride, aluminium-lithium hydride, lithium-aluminium hydride, lithium- aluminium hydride, lithium aluminiumtetrahydride, Lithium aluminum tetrahydride, lithium aluminium tetrahydride, aluminum(III) lithium hydride, Aluminium(III) lithium hydride, Jsp003410, BJKLPLABXHXMIM-UHFFFAOYSA-N, MolPort-028-745-831, AN-168, RW2098, AKOS015901019, RTR-007325, TR-007325, I14-16065

Removed Synonyms

Aluminum lithium hydride, lithiumaluminum hydride, LITHIUM ALUMINUM HYDRIDE, Aluminate(1-), tetrahydro-, lithium (1:1), (T-4)-, LAH

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