Carbon suboxide
Encyclopedia : C : CA : CAR : Carbon suboxide
| Carbon suboxide | |
|---|---|
| O=C=C=C=O | |
| Molecular formula | C3O2 |
| Molar mass | 68.031 g/mol |
| Appearance | colourless gas |
| Properties | |
| Density | 3.0 kg/m³, gas at 298 K |
| Melting point | −107°C |
| Boiling point | 6.8°C |
| Molecular shape | linear |
| Related compounds | |
| Related oxides | carbon dioxide carbon monoxide dicarbon monoxide |
| Related compounds | carbon subnitride |
| [Chemical infoboxInfobox disclaimer and references] | |
Carbon suboxide, C3O2, is a colorless but pungent gas, with four cumulative double bonds, making it a cumulene. It is closely related to CO, CO2 and C2O, and other oxides of carbon.
Brodie discovered it in 1873 by submitting electric current to carbon monoxide.[#endnote_brodie][#endnote_brodieb] The Berthelot created the name carbon suboxide, while Otto Diels later stated that the more organic names dicarbonyl methane and dioxallene were also correct.
It is synthesized by warming a dry mixture of tetraphosphorus decoxide (P4O10) and malonic acid or the esters of malonic acid. [#endnote_diels]
Several other ways for synthesis and reactions of carbon suboxide can be found in a review from 1930 by Reyerson.[#endnote_reyerson]
References
- ↑
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- ↑ [DOI]
External links
- For a full list of external links to MSDSs, spectroscopic data, commercial chemicals suppliers etc. for this compound, see [Chemical sources].
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