Lithium gallium hydride

A. C. Bond jr., and H. I. Schlesinger Lithium Aluminium Hydride, Aluminium Hydride and Lithium Gallium Hydride, and some of their Applications in Organic and Inorganic Chemistry. J. Amer. chem. Soc. 69, 1199 (1947). 

A.E. Finholt, A.C. Bond Jr., H.I. Schlesinger, Lithium aluminum hydride, aluminum hydride and lithium gallium hydride, and some of their applications in organic and inorganic chemistry, J. Am. Chem. Soc. 69 (1949) 1199-1203. 

Liquid injection molding, for silicone rubbers, 3, 674—675 Liquid ligands, in metal vapor synthesis, 1, 229 Liquid-phase catalysis, supported, for green olefin hydroformylation, 12, 855 Lithiacarbaboranes, preparation, 3, 114 Lithiation, arene chromium tricarbonyls, 5, 236 Lithium aluminum amides, reactions, 3, 282 Lithium aluminum hydride, for alcohol reductions, 3, 279 Lithium borohydride, in hydroborations, 9, 158 Lithium gallium hydride, in reduction reactions, 9, 738 Lithium indium hydride, in carbonyl reductions, 9, 713—714... 

Finholt, A.E., Bond, A.S. and Schlesinger, H.J. (1947) Lithium Aluminum Hydride, Aluminum Hydride and Lithium Gallium Hydride and some of their Applications in organic and Inorganic Chemistry, J.Chem.Soc. No. 5, 1199. 

Lithium gallium hydride reduces effectively both primary and secondary alkyl bromides and iodides to the corresponding hydrocarbons (Table 41).435... 

Table 41 Reduction of alkyl bromides with lithium gallium hydride. Reproduced with permission from the Korean Chemical Society...

Gallium hydride decomposes above 130 into its elements. Lithium gallium hydride has been prepared and has properties similar to lithium aluminium hydride. 

Lithium tetrahydridogallate, which was first prepared by Finholt, Bond, and Schlesinger,1 is a very useful starting material for the preparation of gallium hydride derivatives.2-3 The present synthesis is based on an adaptation of the original preparation.1-4 Since gallium-hydrogen bonds are susceptible to hydrolysis, it is necessary to perform the preparation in the absence of air. The procedure described is based on the use of Schlenk-type inert-atmosphere techniques. 

Lithium tetrahydridogallate(l —) is a moisture-sentitive solid similar in many respects to lithium tetrahydridoaluminate(l —). It reacts with protic solvents, but is soluble without reaction in a variety of ethers. The solid decomposes slowly at room temperature, but may be stored with decomposition at — 78° under an inert atmosphere or in vacuum. Ether solutions are stable for at least several days. A variety of gallium hydride derivatives may be prepared from Li[GaH4], including (CH3)3N GaH3.1,2,6 Infrared and Raman data have been reported for [GaH4]-.7... 

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