Lithium cyanide
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Through Hygroscopy
Preparation
LiCN is produced from the reaction of lithium hydroxide and hydrogen cyanide. A laboratory-scale preparation uses acetone cyanohydrin as a surrogate for HCN:
- (CH3)2C(OH)CN + LiH → (CH3)2CO + LiCN + H2
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Uses
The compound decomposes to cyanamide and carbon when heated to a temperature close to but below 600 °C. Acids react to give hydrogen cyanide.
Lithium cyanide can be used as a reagent for organic compound cyanation.
- RX + LiCN → RCN + LiX