Ethynol
- Formula: C2H2O
- Molecular weight: 42.0367
- IUPAC Standard InChI: InChI=1S/C2H2O/c1-2-3/h1,3H
- IUPAC Standard InChIKey: QFXZANXYUCUTQH-UHFFFAOYSA-N
- CAS Registry Number: 32038-79-2
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, Vibrational and/or electronic energy levels, 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 | 9.94 | kcal/mol | Ion | Orlov, Krivoruchko, et al., 1986 |
Vibrational and/or electronic energy levels
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 compiled by: Marilyn E. Jacox
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a' | 1 | OH stretch | 3501.3 | s | Ar | IR | Hochstrasser and Wirz, 1989 |
| 2 | CH stretch | 3339.6 | m | Ar | IR | Hochstrasser and Wirz, 1989 | |
| 3 | CC stretch | 2198.3 | vs | Ar | IR | Hochstrasser and Wirz, 1989 | |
| 4 | COH bend | 1232.1 | m | Ar | IR | Hochstrasser and Wirz, 1989 | |
| 5 | CO stretch | 1072.1 | m | Ar | IR | Hochstrasser and Wirz, 1989 | |
| Bend | 599 | T | Ar | IR | Hochstrasser and Wirz, 1989 | ||
| Bend | 523 | T | Ar | IR | Hochstrasser and Wirz, 1989 | ||
| Bend | 383 | T | Ar | IR | Hochstrasser and Wirz, 1989 | ||
| Bend | 346 | T | Ar | IR | Hochstrasser and Wirz, 1989 | ||
Additional references: Jacox, 1994, page 255
Notes
| m | Medium |
| s | Strong |
| vs | Very strong |
| T | Tentative assignment or approximate value |
References
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Orlov, Krivoruchko, et al., 1986
Orlov, V.M.; Krivoruchko, A.A.; Misharev, A.D.; Takhistov, V.V.,
Enthalpy of vapor phase formation of ketene, ethynol, and their analogs,
Bull. Acad. Sci. USSR, Div. Chem. Sci., 1986, 2404-2405. [all data]
Hochstrasser and Wirz, 1989
Hochstrasser, R.; Wirz, J.,
Ethinol: Photochemische Erzeugung in einer Argonmatrix, IR-Spektrum und Photoisomerisierung zu Keten,
Angew. Chem., 1989, 101, 2, 183, https://doi.org/10.1002/ange.19891010209
. [all data]
Jacox, 1994
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, 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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