Lithium tetrahydridoaluminate

Base Information

• Chemical Name: Lithium tetrahydridoaluminate
• CAS No.: 16853-85-3
• Molecular Formula: AlH4.Li
• Molecular Weight: 37.9543
• Hs Code.: 2850 00 20
• European Community (EC) Number: 237-980-6
• Wikidata: Q409574
• Mol file: 16853-85-3.mol

Synonyms:Lithium tetrahydridoaluminate;Lithium aluminohydride;Li[AlH4];Lithium tetrahydroaluminate;Lithium tetrahydroaluminate(1-);Lithium aluminium deuteride;14128-54-2;lithium;alumanuide;lithiumtetrahydroaluminate;CHEBI:30142;lithium tetrahydro-aluminate(1-);AKOS015951240;Lithium aluminum hydride, reagent grade;Lithium aluminum hydride, hydrogen-storage grade;Q409574;Lithium aluminum hydride, >=97.0% (gas-volumetric);Lithium aluminum hydride, pellets, reagent grade, 95%;Lithium aluminum hydride, powder, reagent grade, 95%;B0001-204560;Lithium aluminum hydride, >=97.0% (gas-volumetric), tablet (~0.5 g each)

Chemical Property of Lithium tetrahydridoaluminate

Chemical Property:

• Appearance/Colour: white crystalline powder
• Melting Point: 125 °C (dec.)(lit.)
• Boiling Point: 0 °C
• Flash Point: 99 °F
• PSA: 0.00000
• Density: 0.917
• LogP: 0.45000
• Storage Temp.: 2-8°C
• Sensitive.: Air & Moisture Sensitive
• Water Solubility.: Reacts
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 0
• Exact Mass: 38.0288420
• Heavy Atom Count: 2
• Complexity: 0

Purity/Quality:

97%, ^*data from raw suppliers

Lithium Aluminum Hydride ^*data from reagent suppliers

Safty Information:

• Pictogram(s): F,C
• Hazard Codes: F,C,Xi,Xn,F+,T
• Statements: 15-34-14/15-11-36/37-19-40-10-67-66-22-12-35-37-65-48/20-63-36/38-61-60
• Safety Statements: 43-7/8-6A-45-43B-36/37/39-33-26-16-24/25-27-29-62-53

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Metal Hydrides
• Canonical SMILES: [Li+].[AlH4-]
• Description: Lithium aluminum hydride (LiAlH4) is a promising compound for hydrogen storage, with a high gravimetric and volumetric hydrogen density and a low decomposition temperature. Similar to other metastable hydrides, LiAlH4 does not form by direct hydrogenation at reasonable hydrogen pressures; therefore, there is considerable interest in developing new routes to regenerate the material from the dehydrogenated products LiH and Al. It can also be used as a reducing agent in the preparation of reduced graphene oxide (rGO).
• Physical properties: White crystalline powder when pure; monoclinic crystals; grey in the presence of aluminum impurity; stable below 120°C in dry air; turns grey on standing; hygroscopic; density 0.917 g/cm3; melts at 190°C (decomposes); reacts with water and alcohols; soluble in diethylether and tetrahydrofuran (about 30 and 13 g/100g, respectively at 25°C; also soluble in dimethylcellosolve; sparingly soluble in dibutylether; slightly soluble in dioxane (1g/L) and practically insoluble in hydrocarbons; can be solubilized in benzene by crown ether.
• Uses: It is used as a powerful reducing agent inorganic synthesis. Except for olefinic doublebonds, almost all organic functional groupsare reduced by lithium aluminum hydride(Sullivan and Wade 1980). It is used extensivelyin pharmaceutical synthesis and in catalytichydrogenation. Lithium aluminum hydride is among the most important industrial reducingagents. It is used extensively in organic syntheses and also in catalytichydrogenation. Reactant or reagent for: 1. The preparation of thermoplastic polyester polyamides from oleic acid 2. Lithium-polymer batteries 3. Hydrodefluorination of gem-difluoromethylene derivatives 4. Asymmetric aldol reactions 5. Synthesis of Li-Al-N-H composites with hydrogen absorption / desorption properties 6. LAH is a powerful reducing agent for many different reduction reactions such as that of ketones to alcohols

Technology Process of Lithium tetrahydridoaluminate

There total 22 articles about Lithium tetrahydridoaluminate which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

hydrogen (1333-74-0) + lithium hydride + aluminium (7429-90-5) → lithium aluminium tetrahydride (16853-85-3)

Guidance literature:

titanium(III) chloride; In tetrahydrofuran; at 20 ℃; for 4h; under 73132.3 - 73162.7 Torr; Product distribution / selectivity; Balled milled;

Reference yield:

lithium hexahydroaluminate + hydrogen (1333-74-0) + lithium hydride + aluminium (7429-90-5) → lithium aluminium tetrahydride (16853-85-3)

Guidance literature:

titanium; In diethyl ether; ball milling mixture of LiH, aluminium comd. and aluminium, obtained by dehydrogenating of LiAlH4, in hydrogen at different pressure for 2 h, addn. of ether, ball milling for 2 h at different hydrogen pressure at room temp.;

DOI:10.1021/ja060045l

Reference yield:

aluminum (III) chloride (7446-70-0,7784-13-6) + lithium hydride → lithium aluminium tetrahydride (16853-85-3) + lithium chloride

Guidance literature:

With hydrogen; at 20 ℃; for 1.5h; under 37503.8 Torr; Time; Milling; Glovebox; Sealed tube; Ionic liquid; Green chemistry;

DOI:10.1039/c8ta00533h

upstream raw materials:

hydrogen

aluminium

aluminium hydride

AlH₃*Et₂O

Downstream raw materials:

3-(4-amino-2-fluorophenyl)-3-methylazetidine

6-Amino-3.3-diphenylhexan-1-ol

4-(2-hydroxyethyl)piperidine-1-carboxylic acid tert-butyl ester

1,3-dimethyl-5-{3-[4-(2-methoxyphenyl)-1-piperazinyl]-propylamino}-1H-pyrazole

Refernces

• 1、 Bastide,Bureau,Claudy,Letoffe,El Hajri. "HYDRIDOALUMINATES OF ALKALINE METALS.". . p. 209 - 210. Retrieved 1986.
• 2、 Ravnsb?k, Dorthe B.,Jensen, Torben R.. "Tuning hydrogen storage properties and reactivity: Investigation of the LiBH4NaAlH4 system". . p. 1144 - 1149. Retrieved 2011/01/09.
• 3、 Wang, Jun,Ebner, Armin D.,Ritter, James A.. "Physiochemical pathway for cyclic dehydrogenation and rehydrogenation of LiAlH4". . p. 5949 - 5954. Retrieved 2007/10/03.