1,2-Propadiene-1,3-dione
- Formula: C3O2
- Molecular weight: 68.0309
- IUPAC Standard InChI: InChI=1S/C3O2/c4-2-1-3-5
- IUPAC Standard InChIKey: GNEVIACKFGQMHB-UHFFFAOYSA-N
- CAS Registry Number: 504-64-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Carbon suboxide; Carbon oxide (C3O2); C3O2
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Condensed phase thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -121.5 ± 1.0 | kJ/mol | Ccr | Kybett, Johnson, et al., 1965 | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -1059.1 | kJ/mol | Ccr | Kybett, Johnson, et al., 1965 | Corresponding ΔfHºliquid = -121.4 kJ/mol (simple calculation by NIST; no Washburn corrections) |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Kybett, Johnson, et al., 1965
Kybett, B.D.; Johnson, G.K.; Barker, C.K.; Margrave, J.L.,
The heats of formation and polymerization of carbon suboxide,
J. Phys. Chem., 1965, 69, 3603-3606. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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