Lithium aluminium hydride
Lithium aluminum hydride is an inorganic compound. Its chemical formula is LiAlH4. It is commonly abbreviated as LAH. It is a grey solid. It was discovered by Finholt, Bond and Schlesinger in 1947.[1]
Properties
Lithium aluminium hydride is a colorless solid, but commercial samples are usually gray because of contamination.[2] It can be purified by recrystallization from diethyl ether.[2] It reacts violently with water.[2] Some commercial samples contain mineral oil to stop reactions with moisture in the atmosphere.[2]
Uses
Lithium aluminum hydride is used in organic chemistry as a reducing agent.[2] Lithium aluminum hydride is most commonly used for the reduction of esters and carboxylic acids to primary alcohols.[3]
Lithium Aluminium Hydride Media
Scanning Electron Microscope image of LAH powder
- Lithium-aluminium-hydride-unit-cell-3D-polyhedra.png
The crystal structure of LAH; Li atoms are purple and AlH
4 tetrahedra are tan. - Lialh4 xrpd.svg
X-ray powder diffraction pattern of as-received Li[AlH
4]. The asterisk designates an impurity, possibly LiCl. - Lialh4 dsc.svg
Differential scanning calorimetry of as-received Li[AlH
4]. - Volvsgrav.png
Volumetric and gravimetric hydrogen storage densities of different hydrogen storage*methods. Metal hydrides are represented with squares and complex hydrides with triangles (including LiAlH4).*Reported values for hydrides are excluding tank weight. DOE FreedomCAR targets are including tank weight.
References
- ↑ Lua error in Module:Citation/CS1/Identifiers at line 630: attempt to index field 'known_free_doi_registrants_t' (a nil value).
- ↑ 2.0 2.1 2.2 2.3 2.4 Encyclopaedia of science & technology (2nd ed.). Claremont: New Africa Education. 2004. ISBN 1-86928-384-8. OCLC 238823160.
- ↑ "Preparation of Enantiomerically Pure α-N,N-Dibenzylamino Aldehydes: S-2-(N,N-Dibenzylamino)-3-Phenylpropanal". www.orgsyn.org. Retrieved 2020-09-19.
