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Carbon compounds: carbon suboxide
The carbon in carbon suboxide formally is in the oxidation state .

Carbon suboxide
- Formula as often written: C3O2
- Hill system formula: C3O2
- CAS registry number: [504-64-3]
- Formula weight: 68.031
- Class: oxide
Synonyms
- carbon suboxide
- carbon oxide
Physical properties
- Colour: colourless
- Appearance: gas
- Melting point: -107°C
- Boiling point: 6.8°C
- Density: 3.0 kg m-3 (gas)
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Element analysis
Element percentages for the elements in carbon suboxide
| Element |
% |
| C |
52.96 |
| O |
47.04 |
Synthesis
Not available
Solid state structure
- Geometry of carbon: 2 coordinate: linear
- Prototypical structure:

Isotope pattern
What follows is the calculated isotope pattern for the C3O2 unit with the most intense ion set to 100%.
Formula: C3O2
mass %
68 100.0 __________________________________________________ 69 3.4 __ 70 0.4 71 0.0
References
The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.
- R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
- N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
- F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
- A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
- R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
- A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
- A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
- J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
- D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
- J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
- J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.
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