Ethanone, 1-(4-chlorophenyl)-
- Formula: C8H7ClO
- Molecular weight: 154.594
- IUPAC Standard InChIKey: BUZYGTVTZYSBCU-UHFFFAOYSA-N
- CAS Registry Number: 99-91-2
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Acetophenone, 4'-chloro-; p-Chloroacetophenone; 1-(4-Chlorophenyl)ethanone; 4'-Chloroacetophenone; 4-Chloroacetophenone; USAF do-1
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Gas phase ion energetics data
Go To: Top, References, Notes
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
Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 204.7 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 197.1 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
0.585 ± 0.087 | IMRE | Mishima, Huh, et al., 1995 | ΔGea(343 K) = -13.8 kcal/mol. Reanchored to EA(PhNO2), Kebarle and Chowdhury, 1987.; B |
0.551 ± 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 |
0.5668 ± 0.0052 | ECD | Steelhammer and Wentworth, 1969 | B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.63 | EI | Howe and Williams, 1969 | RDSH |
9.6 ± 0.1 | EI | Chin and Harrison, 1969 | RDSH |
9.47 ± 0.05 | EI | Foffani, Pignataro, et al., 1964 | RDSH |
9.64 ± 0.15 | EI | Buchs, Rossetti, et al., 1964 | RDSH |
9.25 | PE | Gal, Geribaldi, et al., 1985 | Vertical value; LBLHLM |
9.52 | PE | Pfister-Guillouzo, Geribaldi, et al., 1982 | Vertical value; LBLHLM |
9.60 ± 0.05 | PE | McAlduff, 1980 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C7H4OCl+ | 10.34 ± 0.03 | CH3 | EI | Helal and Zahran, 1978 | LLK |
C7H4OCl+ | 10.69 | CH3 | EI | Howe and Williams, 1969 | RDSH |
C7H4OCl+ | 10.4 ± 0.1 | CH3 | EI | Chin and Harrison, 1969 | RDSH |
C7H4OCl+ | 10.04 | CH3 | EI | Buchs, Rossetti, et al., 1964 | RDSH |
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, https://doi.org/10.1063/1.556018
. [all data]
Mishima, Huh, et al., 1995
Mishima, M.; Huh, C.; Lee, H.W.; Nakamura, H.; Fujio, M.; Tsuno, Y.,
Electron affinities of acetophenones and methyl benzoates. Varying resonance demand of aromatic radical anions,
Tetrahed. Lett., 1995, 36, 13, 2265, https://doi.org/10.1016/0040-4039(95)00267-G
. [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]
Steelhammer and Wentworth, 1969
Steelhammer, J.C.; Wentworth, W.E.,
Correlation of Electron Beam and Thermal Electron Attachment Studies for Some Chloro, Bromo, Iodo Aromatic Compounds,
J. Chem. Phys., 1969, 51, 5, 1802, https://doi.org/10.1063/1.1672262
. [all data]
Howe and Williams, 1969
Howe, I.; Williams, D.H.,
Calculation and qualitative predictions of mass spectra. Mono- and paradisubstituted benzenes,
J. Am. Chem. Soc., 1969, 91, 7137. [all data]
Chin and Harrison, 1969
Chin, M.S.; Harrison, A.G.,
Substituent effects on ion abundances and energetics in substituted acetophenones,
Org. Mass Spectrom., 1969, 2, 1073. [all data]
Foffani, Pignataro, et al., 1964
Foffani, A.; Pignataro, S.; Cantone, B.; Grasso, F.,
Ionization potentials and substituent effects for aromatic carbonyl compounds,
Z. Physik. Chem. (Frankfurt), 1964, 42, 221. [all data]
Buchs, Rossetti, et al., 1964
Buchs, A.; Rossetti, G.P.; Susz, B.P.,
Etude, en fonction de la constante σp de Hammett, du spectre de masse d'acetophenones p-substituees,
Helv. Chim. Acta, 1964, 47, 1563. [all data]
Gal, Geribaldi, et al., 1985
Gal, J.-F.; Geribaldi, S.; Pfister-Guillouzo, G.; Morris, D.G.,
Basicity of the carbonyl group. Part 12. Correlations between ionization potentials and lewis basicities in aromatic carbonyl compounds,
J. Chem. Soc. Perkin Trans. 2, 1985, 103. [all data]
Pfister-Guillouzo, Geribaldi, et al., 1982
Pfister-Guillouzo, G.; Geribaldi, S.; Gal, J.-F.,
Spectres photoelectroniques de cyclohexene-2-ones-1 diversement substituees en position 3. Correlations avec la reactivite,
Can. J. Chem., 1982, 60, 1163. [all data]
McAlduff, 1980
McAlduff, E.J.,
Photoelectron spectra of substituted acetophenones. Correlations with reactivity,
Can. J. Chem., 1980, 58, 622. [all data]
Helal and Zahran, 1978
Helal, A.I.; Zahran, N.F.,
Kinetic shift in some para-substituted acetophenones,
Org. Mass Spectrom., 1978, 13, 549. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy EA Electron affinity - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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