Benzoic acid, 4-nitro-, methyl ester
- Formula: C8H7NO4
- Molecular weight: 181.1455
- IUPAC Standard InChI: InChI=1S/C8H7NO4/c1-13-8(10)6-2-4-7(5-3-6)9(11)12/h2-5H,1H3
- IUPAC Standard InChIKey: YOJAHJGBFDPSDI-UHFFFAOYSA-N
- CAS Registry Number: 619-50-1
- Chemical structure:
This structure is also available as a 2d Mol file - Species with the same structure:
- Other names: Benzoic acid, p-nitro-, methyl ester; p-Nitrobenzoic acid methyl ester; Methyl p-nitrobenzoate; Methyl 4-nitrobenzoate; Methyl para-nitrobenzoate; Methyl ester of 4-Nitrobenzoic acid; 4-Nitrobenzoic acid methyl ester
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- Other data available:
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Gas phase thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -287. ± 11. | kJ/mol | Cm | Guthrie, Pike, et al., 1992 | Hydrolysis |
Phase change 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔvapH° | 100. ± 10. | kJ/mol | E | Guthrie, Pike, et al., 1992 | Hydrolysis |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Phase change data, 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:
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) | 813.2 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
| Quantity | Value | Units | Method | Reference | Comment |
| Gas basicity | 782.3 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 1.461 ± 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 |
| 1.470 ± 0.087 | IMRE | Mishima, Huh, et al., 1995 | ΔGea(343 K)=-34.8 kcal/mol. Reanchored to EA(PhNO2), Kebarle and Chowdhury, 1987.; B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.70 | EI | Howe and Williams, 1969 | RDSH |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C7H4NO3+ | 11.52 | CH3O | EI | Howe and Williams, 1969 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, 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.
Guthrie, Pike, et al., 1992
Guthrie, J.P.; Pike, D.C.; Lee, Y.-C.,
Equilibrium constants and heats of formation of methyl esters and N,N-dimethyl amides of substituted benzoic acids,
Can. J. Chem., 1992, 70, 1671-1683. [all data]
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]
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]
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]
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]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy EA Electron affinity ΔfH°gas Enthalpy of formation of gas at standard conditions ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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