2,5-Cyclohexadiene-1,4-dione, 2,5-dimethyl-

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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 compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess

View reactions leading to C8H8O2+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
1.761 ± 0.061IMREHeinis, Chowdhury, et al., 1988ΔGea(423 K) = -39.2 kcal/mol; ΔSea estimated = -3.3 eu; B

Ionization energy determinations

IE (eV) Method Reference Comment
9.58PEKobayashi, 1975LLK
9.60 ± 0.05PEDougherty and McGlynn, 1977Vertical value; LLK

Gas Chromatography

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Van Den Dool and Kratz RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryBPX-51129.Hill, Isaacs, et al., 199950. m/0.325 mm/0.5 μm, He, 20. C @ 2. min, 4. K/min, 250. C @ 10. min
CapillaryBPX-51129.Hill, Isaacs, et al., 199950. m/0.325 mm/0.5 μm, He, 20. C @ 2. min, 4. K/min, 250. C @ 10. min

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Heinis, Chowdhury, et al., 1988
Heinis, T.; Chowdhury, S.; Scott, S.L.; Kebarle, P., Electron Affinities of Benzo-, Naphtho-, and Anthraquinones Determined from Gas-Phase Equilibria Measurements, J. Am. Chem. Soc., 1988, 110, 2, 400, https://doi.org/10.1021/ja00210a015 . [all data]

Kobayashi, 1975
Kobayashi, T., Photoelectron spectra of p-benzoquinones, J. Electron. Spectrosc. Relat. Phenom., 1975, 7, 349. [all data]

Dougherty and McGlynn, 1977
Dougherty, D.; McGlynn, S.P., Photoelectron spectroscopy of carbonyls. 1,4-Benzoquinones, J. Am. Chem. Soc., 1977, 99, 3234. [all data]

Hill, Isaacs, et al., 1999
Hill, V.M.; Isaacs, N.S.; Ledward, D.A.; Ames, J.M., Effect of high hydrostatic pressure on the volatile components of a glucose-lysine model system, J. Agric. Food Chem., 1999, 47, 9, 3675-3681, https://doi.org/10.1021/jf990124z . [all data]


Notes

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