Silver acetylide

Silver acetylide
	Wireframe model of silver acetylide
Names
	Preferred IUPAC name Silver acetylide
	Systematic IUPAC name Silver(I) ethynediide
	Other names Silver percarbide; Silver carbide; Silver dicarbide; Argentous acetylide; Argentous ethynediide; Argentous percarbide; Argentous carbide; Argentous dicarbide;
Identifiers
CAS Number	7659-31-6 ; ethynide: 13092-75-6 ;
3D model (JSmol)	Interactive image; ethynide: Interactive image;
ChemSpider	25934157; ethynide: 55489;
PubChem CID	ethynide: 25150847;
CompTox Dashboard (EPA)	DTXSID30904769 ;
	InChI InChI=1S/C2.2Ag/c1-2;;/q-2;2*+1 Key: FIDGMLJJLFFOEI-UHFFFAOYSA-N; ethynide: InChI=1S/C2H.Ag/c1-2;/h1H;/q-1;+1 Key: SLERPCVQDVNSAK-UHFFFAOYSA-N;
	SMILES [Ag+].[Ag+].[C-]#[C-]; ethynide: [Ag+].[C-]#C;
Properties
Chemical formula	Ag2C2
Molar mass	239.758 g·mol−1
Appearance	gray or white solid
Density	4.47 g/cm3
Melting point	120 °C (248 °F; 393 K)
Boiling point	decomposes
Solubility in water	insoluble
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	highly sensitive primary explosive
NFPA 704 (fire diamond)	3 3 4
Flash point	77 °C (171 °F; 350 K)
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	357.6±5.0 kJ/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Silver acetylide is an inorganic chemical compound with the formula Ag₂C₂, 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⁻]. The alternate name "silver carbide" is rarely used, although the analogous calcium compound CaC₂ is called calcium carbide. Silver acetylide is a primary explosive.

^ McCowan, J. D. (1963). "Decomposition of silver acetylide". Transactions of the Faraday Society. 59: 1860–1864. doi:10.1039/tf9635901860.
^ Finch, Arthur; Gardner, Peter J.; Head, Arthur J.; Majdi, Hassan S. (1991). "The standard enthalpy of formation of silver acetylide". Thermochimica Acta. 180: 325–330. Bibcode:1991TcAc..180..325F. doi:10.1016/0040-6031(91)80402-5.

[1] McCowan, J. D. (1963). "Decomposition of silver acetylide". Transactions of the Faraday Society. 59: 1860–1864. doi:10.1039/tf9635901860.

[2] Finch, Arthur; Gardner, Peter J.; Head, Arthur J.; Majdi, Hassan S. (1991). "The standard enthalpy of formation of silver acetylide". Thermochimica Acta. 180: 325–330. Bibcode:1991TcAc..180..325F. doi:10.1016/0040-6031(91)80402-5.

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