1H-Imidazole, 1-acetyl-
- Formula: C5H6N2O
- Molecular weight: 110.1139
- IUPAC Standard InChI: InChI=1S/C5H6N2O/c1-5(8)7-3-2-6-4-7/h2-4H,1H3
- IUPAC Standard InChIKey: VIHYIVKEECZGOU-UHFFFAOYSA-N
- CAS Registry Number: 2466-76-4
- 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: Imidazole, 1-acetyl-; Acetylimidazole; N-Acetylimidazole; 1-Acetylimidazole; Imidazole, N-acetyl-; 1-Acetyl-1H-imidazole
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, 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
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
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By formula: C5H6N2O + H2O = C3H4N2 + C2H4O2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -4.83 ± 0.05 | kcal/mol | Cm | Wadso, 1960 | liquid phase; solvent: Aqueous; Heat of hydrolysis |
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By formula: C4H11N + C5H6N2O = C6H13NO + C3H4N2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -18.07 ± 0.08 | kcal/mol | Cm | Wadso, 1962 | solid phase |
Gas phase ion energetics 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: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.38 | PE | Ramsey, 1979 | Vertical value |
Mass spectrum (electron ionization)
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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| Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Origin | NIST Mass Spectrometry Data Center, 2010 |
| NIST MS number | 374473 |
Gas Chromatography
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Van Den Dool and Kratz RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | VF-5MS | 1054. | Todua, 2011 | 30. m/0.25 mm/0.25 μm, He; Tstart: 60. C; Tend: 270. C |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Wadso, 1960
Wadso, I.,
Heats of hydrolysis of N-acetylated imidazole, 1,2,4-triazole and tetrazole,
Acta Chem. Scand., 1960, 14, 903-908. [all data]
Wadso, 1962
Wadso, I.,
Heats of aminolysis and hydrolysis of some N-acetyl compounds and of acetic anhydride,
Acta Chem. Scand., 1962, 16, 471-478. [all data]
Ramsey, 1979
Ramsey, B.G.,
Substituent effects on imidazole basicity and photoelectron spectroscopy determined ionization energies,
J. Org. Chem., 1979, 44, 2093. [all data]
Todua, 2011
Todua, N.G.,
Retention Data. NIST Mass Spectrometry Data Center., NIST Mass Spectrometry Data Center, 2011. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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