Hexanoic acid
- Formula: C6H12O2
- Molecular weight: 116.1583
- IUPAC Standard InChIKey: FUZZWVXGSFPDMH-UHFFFAOYSA-N
- CAS Registry Number: 142-62-1
- 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: Caproic acid; n-Caproic acid; n-Hexanoic acid; n-Hexoic acid; n-Hexylic acid; Butylacetic acid; Capronic acid; Hexoic acid; Pentiformic acid; Pentylformic acid; 1-Pentanecarboxylic acid; CH3(CH2)4COOH; Pentane-1-carboxylic acid; 1-Hexanoic acid; Hexacid 698; Kyselina kapronova; Pentanecarboxylic acid; NSC 8266
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Gas phase ion energetics data
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
≤10.12 | EI | Holmes, Fingas, et al., 1981 | LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C2H4O2+ | 10.52 ± 0.05 | C4H8 | EI | Holmes and Lossing, 1980 | LLK |
C2H402+ | 10.52 | 1-C4H8 | EI | Holmes and Lossing, 1980, 2 | LLK |
De-protonation reactions
C6H11O2- + =
By formula: C6H11O2- + H+ = C6H12O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1448. ± 8.8 | kJ/mol | G+TS | Caldwell, Renneboog, et al., 1989 | gas phase; B |
ΔrH° | 1447. ± 10. | kJ/mol | G+TS | McLuckey, Cameron, et al., 1981 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1419. ± 8.4 | kJ/mol | IMRE | Caldwell, Renneboog, et al., 1989 | gas phase; B |
ΔrG° | 1418. ± 9.6 | kJ/mol | CIDC | McLuckey, Cameron, et al., 1981 | gas phase; B |
References
Go To: Top, 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.
Holmes, Fingas, et al., 1981
Holmes, J.L.; Fingas, M.; Lossing, F.P.,
Towards a general scheme for estimating the heats of formation of organic ions in the gas phase. Part I. Odd-electron cations,
Can. J. Chem., 1981, 59, 80. [all data]
Holmes and Lossing, 1980
Holmes, J.L.; Lossing, F.P.,
Thermochemistry and unimolecular reactions of ionized acetic acid and its enol in the gas phase.,
J. Am. Chem. Soc., 1980, 102, 3732. [all data]
Holmes and Lossing, 1980, 2
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]
Caldwell, Renneboog, et al., 1989
Caldwell, G.; Renneboog, R.; Kebarle, P.,
Gas Phase Acidities of Aliphatic Carboxylic Acids, Based on Measurements of Proton Transfer Equilibria,
Can. J. Chem., 1989, 67, 4, 661, https://doi.org/10.1139/v89-092
. [all data]
McLuckey, Cameron, et al., 1981
McLuckey, S.A.; Cameron, D.; Cooks, R.G.,
Proton affinities from the dissociation of proton bound dimers,
J. Am. Chem. Soc., 1981, 103, 1313. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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