3-Penten-2-one
- Formula: C5H8O
- Molecular weight: 84.1164
- IUPAC Standard InChI: InChI=1S/C5H8O/c1-3-4-5(2)6/h3-4H,1-2H3
- IUPAC Standard InChIKey: LABTWGUMFABVFG-UHFFFAOYSA-N
- CAS Registry Number: 625-33-2
- Chemical structure:
This structure is also available as a 2d Mol file - Stereoisomers:
- Other names: Ethylidene acetone; Methyl propenyl ketone; Methyl 1-propenyl ketone; 2-Oxo-3-pentene; (E)-CH3CH=CHC(=O)CH3; 3-Pentene-2-one; Pent-3-en-2-one
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Gas phase thermochemistry 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -136. | kJ/mol | Cm | Trifel, Smirnov, et al., 1992 |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Proton affinity (review) | 864.3 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
| Quantity | Value | Units | Method | Reference | Comment |
| Gas basicity | 832.5 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.39 | PE | Masclet and Mouvier, 1978 | LLK |
References
Go To: Top, Gas phase thermochemistry 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.
Trifel, Smirnov, et al., 1992
Trifel, B.Yu.; Smirnov, V.V.; Gloriozov, I.P.; Kurbanov, N.I.; Mamedov, F.V.,
Mechanism of reaction between trichloroacetic acid and unsaturated ketones,
Vestn. Mosk. Univ. Ser. 2: Khim., 1992, 33, 547-550. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Masclet and Mouvier, 1978
Masclet, P.; Mouvier, G.,
Etude par spectrometrie photoelectronique d'aldehydes et de cetones ethyleniques conjugues,
J. Electron Spectrosc. Relat. Phenom., 1978, 14, 77. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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