1,4-Benzenedicarboxaldehyde
- Formula: C8H6O2
- Molecular weight: 134.1320
- IUPAC Standard InChI: InChI=1S/C8H6O2/c9-5-7-1-2-8(6-10)4-3-7/h1-6H
- IUPAC Standard InChIKey: KUCOHFSKRZZVRO-UHFFFAOYSA-N
- CAS Registry Number: 623-27-8
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Terephthaladehyde; p-Benzenedicarboxaldehyde; p-Formylbenzaldehyde; p-Phthalaldehyde; Terephthalaldehyde; Terephthalic aldehyde; 1,4-Diformylbenzene; 4-Formylbenzaldehyde; Terephthaldicarboxaldehyde; Terephthaldialdehyde; Terephthaldehyde; Terephtaldehyde; 1,4-Benzenedialdehyde; 1,4-Benzenedicarbaldehyde; p-Phthaldialdehyde; p-Benzenedialdehyde; NSC 13395
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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:
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 ± 0.087 | IMRE | Mishima, Huh, et al., 1993 | ΔGea(343 K)=-29.4 kcal/mol. Reanchored to EA(PhNO2), Kebarle and Chowdhury, 1987.; B |
| 1.284 ± 0.087 | IMRE | Huh, Kang, et al., 1999 | ΔG(EA) 343K; anchored to ΔG value. Including anchor ΔS, EA is ca. 0.4 kcal/mol more bound.; B |
| 0.560005 | ECD | Kuhn, Levins, et al., 1968 | Done at constant temperature, accuracy uncertain: Chen and Wentworth, 1989;; B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 10.13 ± 0.01 | EI | Kuhn, Levins, et al., 1968 | RDSH |
Gas Chromatography
Go To: Top, Gas phase ion energetics data, References, Notes
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
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Carbowax 20M | 2347. | Chen, Kuo, et al., 1986 | He, 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
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Ultra-1 | 1166. | Okumura, 1991 | 25. 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, 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
Go To: Top, Gas phase ion energetics data, Gas Chromatography, References
- Symbols used in this document:
EA Electron affinity - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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