Dicarbon monoxide

Dicarbon monoxide
Dicarbon monoxide
CAS number 119754-08-4 YesY
PubChem 189691 YesY
ChemSpider 164756 YesY
Jmol-3D images Image 1
Molar mass 40.02 g mol−1
 YesY monoxide (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Dicarbon monoxide (C2O) is an extremely reactive molecule that contains two carbon atoms and one oxygen atom. Dicarbon monoxide, covalently bonded, is a product of the photolysis of carbon suboxide.[1][2] It is closely related to CO, CO2 and C3O2, and other oxocarbons.

C3O2 → CO + C2O

It is stable enough to observe reactions with NO and NO2.[3]


  1. ^ Bayes K. (1961). "Photolysis of Carbon Suboxide". Journal of the American Chemical Society 83 (17): 3712–3713. doi:10.1021/ja01478a033. 
  2. ^ Anderson D. J., Rosenfeld R. N. (1991). "Photodissociation of Carbon Suboxide". Journal of Chemical Physics 94 (12): 7852–7867. doi:10.1063/1.460121. 
  3. ^ Thweatt W. D., Erickson M. A., Hershberger J. F. (2004). "Kinetics of the CCO+NO and CCO+NO2 reactions". Journal of Physical Chemistry 108 (1): 74–79. doi:10.1021/jp0304125. 

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