Lithium sulfide

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Lithium sulfide
Template:Longitem Template:Unbulleted list
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Template:Longitem Li2S
Molar mass 45.95 g/mol
Appearance white solid
Density 1.67 g/cm3
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Solubility very soluble in ethanol
Template:Longitem Antifluorite (cubic), cF12
Template:Longitem Fm3m, No. 225
Template:Longitem Tetrahedral (Li+); cubic (S2−)
Template:Longitem 63 J/mol K
Template:Longitem −9.401 kJ/g or −447 kJ/mol
Template:Longitem Lithium oxide
Lithium selenide
Lithium telluride
Lithium polonide
Template:Longitem Sodium sulfide
Potassium sulfide
Rubidium sulfide
Caesium sulfide
Template:Longitem Lithium hydrosulfide

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Lithium sulfide is the inorganic compound with the formula Li2S. It crystallizes in the antifluorite motif, described as the salt (Li+)2S2−. It forms a solid yellow-white deliquescent powder. In air, it easily hydrolyses to release foul smelling hydrogen sulfide gas.[1]

Preparation

Lithium sulfide is prepared by treating lithium with sulfur. This reaction is conveniently conducted in anhydrous ammonia.[2]

2 Li + S → Li2S

The THF-soluble triethylborane adduct of lithium sulfide can be generated using superhydride.[3]

Reactions and applications

Lithium sulfide has been considered for use in lithium–sulfur batteries.[4]

References

  1. Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.), Oxford:Butterworth-Heinemann. Template:ISBN.
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External links

Template:Lithium compounds Template:Sulfides