1,4-Benzenedicarboxaldehyde


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:
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

View reactions leading to C8H6O2+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
1.236 ± 0.087IMREMishima, Huh, et al., 1993ΔGea(343 K)=-29.4 kcal/mol. Reanchored to EA(PhNO2), Kebarle and Chowdhury, 1987.; B
1.284 ± 0.087IMREHuh, Kang, et al., 1999ΔG(EA) 343K; anchored to ΔG value. Including anchor ΔS, EA is ca. 0.4 kcal/mol more bound.; B
0.560005ECDKuhn, Levins, et al., 1968Done at constant temperature, accuracy uncertain: Chen and Wentworth, 1989;; B

Ionization energy determinations

IE (eV) Method Reference Comment
10.13 ± 0.01EIKuhn, Levins, et al., 1968RDSH

Mass spectrum (electron ionization)

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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

Spectrum

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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Japan AIST/NIMC Database- Spectrum MS-NW-4739
NIST MS number 230032

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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, polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryCarbowax 20M2347.Chen, Kuo, et al., 1986He, 50. C @ 5. min, 2. K/min, 200. C @ 40. min; Column length: 50. m; Column diameter: 0.32 mm

Normal alkane RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryUltra-11166.Okumura, 199125. m/0.32 mm/0.25 μm, He, 3. K/min; Tstart: 80. C; Tend: 260. C

References

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, Notes

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

Mishima, Huh, et al., 1993
Mishima, M.; Huh, C.; Nakamura, H.; Fujio, M.; Tsuno, Y., Electron Affinities of Benzaldehydes. Substituent Effects on Stabilities of Aromatic Radical Anions., Tetrahed. Lett., 1993, 34, 26, 4223, https://doi.org/10.1016/S0040-4039(00)60533-6 . [all data]

Kebarle and Chowdhury, 1987
Kebarle, P.; Chowdhury, S., Electron affinities and electron transfer reactions, Chem. Rev., 1987, 87, 513. [all data]

Huh, Kang, et al., 1999
Huh, C.; Kang, C.H.; Lee, H.W.; Nakamura, H.; Mishima, M.; Tsuno, Y.; Yamataka, H., Thermodynamic stabilities and resonance demand of aromatic radical anions in the gas phase, Bull. Chem. Soc. Japan, 1999, 72, 5, 1083-1091, https://doi.org/10.1246/bcsj.72.1083 . [all data]

Kuhn, Levins, et al., 1968
Kuhn, W.F.; Levins, R.J.; Lilly, A.C., Jr., Electron affinities and ionization potentials of phthalate compounds, J. Chem. Phys., 1968, 49, 5550. [all data]

Chen and Wentworth, 1989
Chen, E.C.M.; Wentworth, W.E., Experimental Determination of Electron Affinities of Organic Molecules, Mol. Cryst. Liq. Cryst., 1989, 171, 271. [all data]

Chen, Kuo, et al., 1986
Chen, C.-C.; Kuo, M.-C.; Liu, S.-E.; Wu, C.-M., Volatile components of salted and pickled prunes (Prunus mume Sieb. et Zucc.), J. Agric. Food Chem., 1986, 34, 1, 140-144, https://doi.org/10.1021/jf00067a038 . [all data]

Okumura, 1991
Okumura, T., retention indices of environmental chemicals on methyl silicone capillary column, Journal of Environmental Chemistry (Japan), 1991, 1, 2, 333-358, https://doi.org/10.5985/jec.1.333 . [all data]


Notes

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