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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:
MM - Michael M. Meot-Ner (Mautner)
LL - Sharon G. Lias and Joel F. Liebman
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 C5H10O+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)9.25 ± 0.01eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)196.7kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity190.1kcal/molN/AHunter and Lias, 1998HL

Gas basicity at 298K

Gas basicity (review) (kcal/mol) Reference Comment
191.0 ± 0.02Decouzon, Gal, et al., 1996T = 338K; MM
191.0Decouzon, Gal, et al., 1996T = T(eff) = 430K; MM

Ionization energy determinations

IE (eV) Method Reference Comment
9.24 ± 0.05EIHolmes and Lossing, 1991LL
9.16PEBehan, Dean, et al., 1976LLK
9.25 ± 0.01SHernandez, 1963RDSH
9.26 ± 0.03PIWatanabe, Nakayama, et al., 1962RDSH
9.57PEKimura, Katsumata, et al., 1981Vertical value; LLK
9.46PEPlanckaert, Doucet, et al., 1974Vertical value; LLK
9.48PEKobayashi and Nagakura, 1973Vertical value; LLK
9.50PESweigart and Turner, 1972Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C2H4+~13.8?EICollin and Conde-Caprace, 1966RDSH
C2H5O+11.56?EICollin and Conde-Caprace, 1966RDSH
C3H5+~12.8?EICollin and Conde-Caprace, 1966RDSH
C4H7+~12.2CH2O+HEICollin and Conde-Caprace, 1966RDSH
C4H8+11.88CH2O?EICollin and Conde-Caprace, 1966RDSH
C5H9O+11.22HEICollin and Conde-Caprace, 1966RDSH


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]

Decouzon, Gal, et al., 1996
Decouzon, M.; Gal, J.E.; Herreros, M.; Marai, P.C.; Murrell, J.; Todd, J.F.J., On the Use of the Kinetic Method for the Determination of Proton Affinities by Fourier-Transfrom Ion Cyclotron Resonance Mass Spectrometry, Rapid. Comm. Mass Spectrom., 1996, 10, 242. [all data]

Holmes and Lossing, 1991
Holmes, J.L.; Lossing, F.P., Ionization energies of homologous organic compounds and correlation with molecular size, Org. Mass Spectrom., 1991, 26, 537. [all data]

Behan, Dean, et al., 1976
Behan, J.M.; Dean, F.M.; Johnstone, R.A.W., Photoelectron spectra of cyclic aromatic ethers. The question of the Mills-Nixon effect, Tetrahedron, 1976, 32, 167. [all data]

Hernandez, 1963
Hernandez, G.J., Vacuum-ultraviolet absorption spectra of the cyclic ethers: trimethylene oxide, tetrahydrofuran, and tetrahydropyran, J. Chem. Phys., 1963, 38, 2233. [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]

Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S., Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [all data]

Planckaert, Doucet, et al., 1974
Planckaert, A.A.; Doucet, J.; Sandorfy, C., Comparative study of the vacuum ultraviolet absorption and photoelectron spectra of some simple ethers and thioethers, J. Chem. Phys., 1974, 60, 4846. [all data]

Kobayashi and Nagakura, 1973
Kobayashi, T.; Nagakura, S., Photoelectron spectra of tetrahydropyran, 1,3-dioxane, and 1,4-dioxane, Bull. Chem. Soc. Jpn., 1973, 46, 1558. [all data]

Sweigart and Turner, 1972
Sweigart, D.A.; Turner, D.W., Lone pair orbitals and their interactions studied by photoelectron spectroscopy. II. Equivalent orbitals in saturated oxygen and sulfur J. Heterocycl. Chem., J. Am. Chem. Soc., 1972, 94, 5599. [all data]

Collin and Conde-Caprace, 1966
Collin, J.E.; Conde-Caprace, G., Ionization and dissociation of cyclic ethers by electron impact, Intern. J. Mass Spectrom. Ion Phys., 1966, 1, 213. [all data]


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