Butanoic acid, 2-methyl-, methyl ester
- Formula: C6H12O2
- Molecular weight: 116.1583
- IUPAC Standard InChI: InChI=1S/C6H12O2/c1-4-5(2)6(7)8-3/h5H,4H2,1-3H3
- IUPAC Standard InChIKey: OCWLYWIFNDCWRZ-UHFFFAOYSA-N
- CAS Registry Number: 868-57-5
- 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. - Species with the same structure:
- Isotopologues:
- Other names: Butyric acid, 2-methyl-, methyl ester; Methyl α-methylbutanoate; Methyl α-methylbutyrate; Methyl 2-methylbutanoate; Methyl 2-methylbutyrate; 2-Methylbutanoic acid, methyl ester; dl-2-Methylbutyric acid methyl ester; Methyl ester of 2-methyl-butanoic acid; 2-Methylbutyric acid, methyl ester; Butyric acid, α-methyl-, methyl ester; 53955-81-0; 2-methyl(methyl butanoate)
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, 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 | -492.5 ± 7.5 | kJ/mol | Ccb | Hancock, Watson, et al., 1954 | Heat of formation derived by Cox and Pilcher, 1970 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, 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°liquid | -534.3 ± 7.1 | kJ/mol | Ccb | Hancock, Watson, et al., 1954 | Heat of formation derived by Cox and Pilcher, 1970 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -3541.8 ± 7.1 | kJ/mol | Ccb | Hancock, Watson, et al., 1954 | Reanalyzed by Cox and Pilcher, 1970, Original value = -3540. kJ/mol; Corresponding ΔfHºliquid = -534.30 kJ/mol (simple calculation by NIST; no Washburn corrections) |
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
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C4H8O2+ | 9.81 | C2H4 | EI | Holmes and Lossing, 1980 |
References
Go To: Top, Gas phase thermochemistry data, Condensed 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.
Hancock, Watson, et al., 1954
Hancock, C.K.; Watson, G.M.; Gilby, R.F.,
Heats of combustion of five-carbon fatty acids and their methyl and ethyl esters,
J. Phys. Chem., 1954, 58, 127-129. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Holmes and Lossing, 1980
Holmes, J.L.; Lossing, F.P.,
Gas-phase heats of formation of keto and enol ions of carbonyl compounds.,
J. Am. Chem. Soc., 1980, 102, 1591. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas 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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