Back كربيد الليثيوم Arabic لیتیوم کربید AZB Lithiumcarbid German Καρβίδιο του λιθίου Greek لیتیم کربید FA Carbure de lithium French Litium karbida ID Carburo di litio Italian 二炭化リチウム Japanese Carbeto de lítio Portuguese
| |
| Names | |
|---|---|
| Preferred IUPAC name
Lithium acetylide | |
| Systematic IUPAC name
Lithium ethynediide | |
Other names
| |
| Identifiers | |
3D model (JSmol)
|
|
| ChemSpider | |
| ECHA InfoCard | 100.012.710 |
| EC Number |
|
PubChem CID
|
|
| UNII | |
| |
| |
| Properties | |
| Li2C2 | |
| Molar mass | 37.9034 g/mol |
| Appearance | Powder |
| Density | 1.3 g/cm3[1] |
| Melting point | 452°C[2] |
| Reacts | |
| Solubility | insoluble in organic solvents |
| Related compounds | |
Related compounds
|
|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Lithium carbide, Li2C2, often known as dilithium acetylide, is a chemical compound of lithium and carbon, an acetylide. It is an intermediate compound produced during radiocarbon dating procedures. Li2C2 is one of an extensive range of lithium-carbon compounds which include the lithium-rich Li4C, Li6C2, Li8C3, Li6C3, Li4C3, Li4C5, and the graphite intercalation compounds LiC6, LiC12, and LiC18.
Li2C2 is the most thermodynamically-stable lithium-rich carbide[3] and the only one that can be obtained directly from the elements. It was first produced by Moissan, in 1896[4] who reacted coal with lithium carbonate.
- Li2CO3 + 4 C → Li2C2 + 3 CO
The other lithium-rich compounds are produced by reacting lithium vapor with chlorinated hydrocarbons, e.g. CCl4. Lithium carbide is sometimes confused with the drug lithium carbonate, Li2CO3, because of the similarity of its name.
- ^ R. Juza; V. Wehle; H.-U. Schuster (1967). "Zur Kenntnis des Lithiumacetylids". Zeitschrift für anorganische und allgemeine Chemie. 352 (5–6): 252. doi:10.1002/zaac.19673520506.
- ^ Savchenko, A.P.; Kshnyakina, S.A.; H.-Majorova, A.F. (1997). "Thermal properties of lithium carbide and lithium intercalation compounds of graphite". Neorganicheskie Materialy. 33 (11): 1305–1307.
- ^ Ruschewitz, Uwe (September 2003). "Binary and ternary carbides of alkali and alkaline-earth metals". Coordination Chemistry Reviews. 244 (1–2): 115–136. doi:10.1016/S0010-8545(03)00102-4.
- ^ H. Moissan Comptes Rendus hebd. Seances Acad. Sci. 122, 362 (1896)