CAS number : 7782-89-0
Molecular weight :
Molecular formula/chemical symbol :LiNH2
Description :
Lithium amide is an inorganic compound with the chemical formula Li+NH2-, i.e. it is composed of a lithium cation, and the conjugate base of ammonia. It is a white solid with a tetragonal crystal structure.
The anionic conjugate bases of amines are known as amides. Thus lithium amide may also refer to lithium salts of amines e.g. Li+NR2-. An example of a lithium amide is lithium diisopropylamide (LDA), which is quite commonly used.
Lithium amide can be made by adding lithium metal to liquid ammonia:
2Li + 2NH3 → 2LiNH2 + H2
Lithium amides in general can be similarly formed, substituting ammonia with the appropriate amine:
2Li + 2R2NH → 2LiNR2 + H2
Lithium amides are very reactive compounds and can act as strong bases. Unless the nitrogen atom is hindered, as in the case of LDA, they can also act as nucleophiles.
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Lithium amide |
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IUPAC name[hide] Lithium amide |
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Other names[hide] Lithamide |
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Identifiers |
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22939 |
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Jmol-3D images |
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[show] · [Li+].[NH2-] |
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[show]
· InChI=1S/Li.H2N/h;1H2/q+1;-1
InChI=1/Li.H2N/h;1H2/q+1;-1 |
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Properties |
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LiNH2 |
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22.96 g/mol |
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Appearance |
white solid |
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1.178 g/cm3 |
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390 °C |
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430 °C |
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Solubility in water |
decomposes |
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USES :
Used in organic synthesis, drug manufacturing.
Keyword:Catalyst
Report :