| |||
 | |||
| Names | |||
|---|---|---|---|
| IUPAC name 2-Oxoethenylidene | |||
| Other names Ketenylidene | |||
| Identifiers | |||
3D model (JSmol) | |||
| ChemSpider |
| ||
| |||
| |||
| Properties | |||
| C2O | |||
| Molar mass | 40.021 g·mol−1 | ||
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |||
Dicarbon monoxide (C2O) is amolecule that contains twocarbonatoms and oneoxygen atom. It is alinear molecule that, because of its simplicity, is of interest in a variety of areas. It is, however, so extremelyreactive that it is not encountered in everyday life. It is classified as acarbene,cumulene and anoxocarbon.[1]
Dicarbon monoxide is a product of thephotolysis ofcarbon suboxide:[2][3]
It is stable enough to observe reactions withNO andNO2.[4]
Calledketenylidene inorganometallic chemistry, it is aligand observed inmetal carbonyl clusters, e.g. [OC2Co3(CO)9]+. Ketenylidenes are proposed as intermediates in the chain growth mechanism of theFischer-Tropsch Process, which convertscarbon monoxide andhydrogen to hydrocarbon fuels.[5]
Theorganophosphorus compound (C6H5)3PCCO (CAS# 15596-07-3) contains the C2O functionality. Sometimes called Bestmann's Ylide, it is a yellow solid.[6]
