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2-Butene, 2-methyl-

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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 - E.P. Hunter and S.G. Lias
L - S.G. Lias

Data compiled as indicated in comments:
LBLHLM - S.G. Lias, J.E. Bartmess, J.F. Liebman, J.L. Holmes, R.D. Levin, and W.G. Mallard
LLK - S.G. Lias, R.D. Levin, and S.A. Kafafi
RDSH - H.M. Rosenstock, K. Draxl, B.W. Steiner, and J.T. Herron

View reactions leading to C5H10+ (ion structure unspecified)

QuantityValueUnitsMethodReferenceComment
IE (evaluated)8.69 ± 0.01eVN/AN/AL
QuantityValueUnitsMethodReferenceComment
Proton affinity (review)808.8kJ/molN/AHunter and Lias, 1998HL
QuantityValueUnitsMethodReferenceComment
Gas basicity779.9kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV)MethodReferenceComment
8.69PITraeger, 1986LBLHLM
8.68 ± 0.02PEBieri, Burger, et al., 1977LLK
8.682 ± 0.003PEMasclet, Grosjean, et al., 1973LLK
8.70EILossing, 1972LLK
8.83 ± 0.11EIGross and Wilkins, 1971LLK
8.72PEFrost and Sandhu, 1971LLK
8.85 ± 0.04EIBock and Seidl, 1968RDSH
8.67 ± 0.02PIWatanabe, Nakayama, et al., 1962RDSH
8.68PIBralsford, Harris, et al., 1960RDSH

Appearance energy determinations

IonAE (eV)Other ProductsMethodReferenceComment
C3H6+11.70 ± 0.11C2H4EIGross and Wilkins, 1971LLK
C4H7+10.80CH3PITraeger, 1986LBLHLM
C4H7+10.84CH3EIBrand and Baer, 1984LBLHLM
C4H7+10.84CH3EILossing, 1972LLK
C4H7+11.33 ± 0.12CH3EIGross and Wilkins, 1971LLK

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. [doi:10.1063/1.556018] [all data]

Traeger, 1986
Traeger, J.C., Heat of formation for the 1-methylallyl cation by photoionization mass spectrometry, J. Phys. Chem., 1986, 90, 4114. [all data]

Bieri, Burger, et al., 1977
Bieri, G.; Burger, F.; Heilbronner, E.; Maier, J.P., Valence ionization enrgies of hydrocarbons, Helv. Chim. Acta, 1977, 60, 2213. [all data]

Masclet, Grosjean, et al., 1973
Masclet, P.; Grosjean, D.; Mouvier, G., Alkene ionization potentials. Part I. Quantitative determination of alkyl group structural effects, J. Electron Spectrosc. Relat. Phenom., 1973, 2, 225. [all data]

Lossing, 1972
Lossing, F.P., Free radicals by mass spectrometry. XLV. Ionization potentials and heats of formation of C3H3, C3H5, and C4H7 radicals and ions, Can. J. Chem., 1972, 50, 3973. [all data]

Gross and Wilkins, 1971
Gross, M.L.; Wilkins, C.L., Computer-assisted ion cyclotron resonance appearance potential measurements for C5H10 isomers, Anal. Chem., 1971, 43, 1624. [all data]

Frost and Sandhu, 1971
Frost, D.C.; Sandhu, J.S., Ionization potentials of ethylene and some methyl-substituted ethylenes as determined by photoelectron spectroscopy, Indian J. Chem., 1971, 9, 1105. [all data]

Bock and Seidl, 1968
Bock, H.; Seidl, H., d-Orbitaleffekte in siliziumsubstituierten «pi»-Elektronensystemen. VI. Spektroskopische Untersuchungen an Alkyl- und Silylathylenen, J. Organometal. Chem., 1968, 13, 87. [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]

Bralsford, Harris, et al., 1960
Bralsford, R.; Harris, P.V.; Price, W.C., The effect of fluorine on the electronic spectra and ionization potentials of molecules, Proc. Roy. Soc. (London), 1960, A258, 459. [all data]

Brand and Baer, 1984
Brand, W.A.; Baer, T., Dissociation dynamics of energy-selected C5H10+ ions, J. Am. Chem. Soc., 1984, 106, 3154. [all data]


Notes

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