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Calcium carbide is prepared industrially by heating carbon with lime (calcium oxide) at approximately 2,000 °C. [1] A similar process can be used to produce lithium carbide. Dilithium acetylide, Li 2 C 2, competes with the preparation of the monolithium derivative LiC 2 H. [11]
Calcium carbide, also known as calcium acetylide, is a chemical compound with the chemical formula of Ca C 2. Its main use industrially is in the production of acetylene and calcium cyanamide . [ 3 ]
Dilithium acetylide is an organometallic compound with the formula Li 2 C 2. It is typically derived by double deprotonation of acetylene. X-ray crystallography confirms the presence of C≡C subunits attached to lithium, resulting in a polymeric structure. [ 3 ]
Silver acetylide is an inorganic chemical compound with the formula Ag 2 C 2, a metal acetylide. The compound can be regarded as a silver salt of the weak acid , acetylene . The salt's anion consists of two carbon atoms linked by a triple bond , thus, its structure is [Ag + ] 2 [ − C≡C − ] .
Calcium carbide. Several carbides are assumed to be salts of the acetylide anion C 2− 2 (also called percarbide, by analogy with peroxide), which has a triple bond between the two carbon atoms. Alkali metals, alkaline earth metals, and lanthanoid metals form acetylides, for example, sodium carbide Na 2 C 2, calcium carbide CaC 2, and LaC 2. [2]
Strontium carbide (also more precisely known as strontium acetylide or strontium dicarbide) is a salt with chemical formula SrC 2. It was first synthesized by Moissan in 1894. [1] Strontium carbide can be formed in an electric arc furnace from strontium carbonate and a reductant, such as a reducing sugar [1] [2] or magnesium metal. [3]
Copper(I) acetylide, Kupfercarbid or cuprous acetylide, is a chemical compound with the formula Cu 2 C 2. Although never characterized by X-ray crystallography, the material has been claimed at least since 1856. [2] One form is claimed to be a monohydrate with formula Cu 2 C 2. H 2 O is a reddish-brown explosive powder.
The carbonaceous material in an archeological sample is treated with lithium metal in a small specialized research furnace to form lithium carbide (also known as lithium acetylide). The carbide can then be reacted with water, as usual, to form acetylene gas to feed into a mass spectrometer to measure the isotopic ratio of carbon-14 to carbon-12 ...