4H-Pyran-4-one
- Formula: C5H4O2
- Molecular weight: 96.0841
- IUPAC Standard InChI: InChI=1S/C5H4O2/c6-5-1-3-7-4-2-5/h1-4H
- IUPAC Standard InChIKey: CVQUWLDCFXOXEN-UHFFFAOYSA-N
- CAS Registry Number: 108-97-4
- 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: γ-Pyrone; Pyran-4-one; 4-Pyrone; 4H-Pyran, 4-oxo-
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Phase change data
Go To: Top, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Robert L. Brown and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 485.7 | K | N/A | Weast and Grasselli, 1989 |
Gas phase ion energetics data
Go To: Top, Phase change data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.35 ± 0.05 | PE | Colonna, Distefano, et al., 1980 | Vertical value |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C4H4O+ | 10.64 ± 0.05 | CO | EI | Holmes and Terlouw, 1979 |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Colonna, Distefano, et al., 1980
Colonna, F.P.; Distefano, G.; Guerra, M.; Jones, D.,
Photoelectron (He(I), He(II) and X-ray) spectroscopy of γ-pyrone and its related sulphur derivatives: valence and core ionization energies shake-up satellites,
J. Electron Spectrosc. Relat. Phenom., 1980, 18, 309. [all data]
Holmes and Terlouw, 1979
Holmes, J.L.; Terlouw, J.K.,
Structures of [C4H4O]+ ions produced from 2- and 4-pyrone,
J. Am. Chem. Soc., 1979, 101, 4973. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Tboil Boiling point - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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