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Methyl propionate

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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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C4H8O2+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)10.15 ± 0.03eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)830.2kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity799.2kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
10.15PITraeger, 1985LBLHLM
9.9 ± 0.2CEMSJalonen, Tedder, et al., 1980LLK
10.15EIHolmes and Lossing, 1980LLK
10.15 ± 0.03PIWatanabe, Nakayama, et al., 1962RDSH
10.30PEBenoit and Harrison, 1977Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C2H3O2+11.42 ± 0.05C2H5EIBlanchette, Holmes, et al., 1986LBLHLM
C2H3O2+11.9 ± 0.3C2H5CEMSJalonen, Tedder, et al., 1980LLK
C2H5+11.9 ± 0.3COOCH3CEMSJalonen, Tedder, et al., 1980LLK
C3H5O+10.78CH3OPITraeger, 1985LBLHLM
C3H5O+11.0 ± 0.1OCH3CEMSJalonen, Tedder, et al., 1980LLK

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.

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]

Traeger, 1985
Traeger, J.C., Heat of formation for the propanoyl cation by photoionization mass spectrometry, Org. Mass Spectrom., 1985, 20, 223. [all data]

Jalonen, Tedder, et al., 1980
Jalonen, J.; Tedder, J.M.; Nidaud, P.H., Charge-exchange mass spectra of ethyl acetate, methyl proprionate and propyl formate, J. Chem. Soc. Faraday Trans. 2, 1980, 76, 1450. [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]

Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J., Ionization potentials of some molecules, J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]

Benoit and Harrison, 1977
Benoit, F.M.; Harrison, A.G., Predictive value of proton affinity. Ionization energy correlations involving oxygenated molecules, J. Am. Chem. Soc., 1977, 99, 3980. [all data]

Blanchette, Holmes, et al., 1986
Blanchette, M.C.; Holmes, J.L.; Hop, C.E.C.A.; Lossing, F.P.; Postma, R.; Ruttink, P.J.A.; Terlouw, J.K., Theory and experiment in concert; the CH3O-C=O+ ion and its isomers, J. Am. Chem. Soc., 1986, 108, 7589. [all data]


Notes

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