Basic information Safety Supplier Related

dilithium acetylide

Basic information Safety Supplier Related

dilithium acetylide Basic information

Product Name:
dilithium acetylide
Synonyms:
  • dilithium acetylide
  • lithium carbide
  • 1,2-Dilithioacetylene
  • Dilithioacetylene
  • Ethyne-1,2-diylbislithium
  • Ethynylenebislithium
CAS:
1070-75-3
MF:
C2Li2
MW:
37.9034
EINECS:
213-980-1
Mol File:
1070-75-3.mol
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dilithium acetylide Chemical Properties

Density 
1.650
solubility 
reacts with H2O; insoluble in organic solvents
color 
white hygroscopic crystals, crystalline
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dilithium acetylide Usage And Synthesis

Chemical Properties

crystal(s) white powder(s); decomposes in water, evolves acetylene when dissolved in acid [HAW93]

Preparation

Lithium carbide, Li2C2, may be prepared by the direct combination of lithium and carbon at about 1000°C or by the reaction of lithium metal with acetylene in liquid ammonia. The latter process first yields lithium acetylide, LiC=CH, which decomposes to lithium carbide. The conversion to the carbide is incomplete, however . A convenient laboratory preparation of lithium carbide may be carried out by bubbling acetylene into a solution of n-butyllithium in hexane. The precipitated carbide may be filtered from the reaction mixture, washed, and dried. Lithium carbide is ionic and yields acetylene on hydrolysis.

dilithium acetylideSupplier

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