LITHIUM AMIDE LiNH2

Properties of lithium amide:

White, melts without decomposition, decomposes on further heating. Completely hydrolysed by water. Reacts with acids.

 

Obtaining lithium amide:

2 Li + 2 NH3 = 2 LiNH2 + H2 (220° C)

LiH + NH3 = LiNH2 + H2 (350° C).

LiH + NH3 (liquid) = LiNH2 ↓ + H2 ↑ (- 40° C).


Reactions with lithium amide:

2 LiNH2 = Li2NH + NH3 (400—500° C).

LiNH2 + 2 H2O (cold) = LiOH + NH3-H2O.

LiNH2 + 2 HCl (diluted) = LiCl + NH4Cl
 

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