Benzoic acid, 4-bromo-
- Formula: C7H5BrO2
- Molecular weight: 201.017
- IUPAC Standard InChIKey: TUXYZHVUPGXXQG-UHFFFAOYSA-N
- CAS Registry Number: 586-76-5
- 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: Benzoic acid, p-bromo-; p-Bromobenzoic acid; 4-Bromobenzoic acid; p-Carboxybromobenzene
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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 | -65.94 ± 0.33 | kcal/mol | Ccr | Sabbah and Rojas Aguilar, 1996 | |
ΔfH°gas | -65.01 ± 0.41 | kcal/mol | Ccr | Ferrao and Pilcher, 1987 | |
ΔfH°gas | -69.4 ± 1.1 | kcal/mol | Ccb | Bjellerup, 1959 | Heat of formation derived by Cox and Pilcher, 1970 |
Condensed 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°solid | -90.58 ± 0.31 | kcal/mol | Ccr | Sabbah and Rojas Aguilar, 1996 | ALS |
ΔfH°solid | -90.20 ± 0.38 | kcal/mol | Ccb | Zhang, Xu, et al., 1990 | ALS |
ΔfH°solid | -90.73 ± 0.31 | kcal/mol | Ccr | Ferrao and Pilcher, 1987 | ALS |
ΔfH°solid | -90.4 ± 0.5 | kcal/mol | Ccb | Bjellerup, 1959 | Heat of formation derived by Cox and Pilcher, 1970; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -738.55 ± 0.31 | kcal/mol | Ccr | Sabbah and Rojas Aguilar, 1996 | ALS |
ΔcH°solid | -738.96 ± 0.31 | kcal/mol | Ccb | Zhang, Xu, et al., 1990 | ALS |
ΔcH°solid | -738.4 ± 0.2 | kcal/mol | Ccr | Ferrao and Pilcher, 1987 | ALS |
ΔcH°solid | -738.73 ± 0.50 | kcal/mol | Ccr | Bjellerup, 1959 | Reanalyzed by Cox and Pilcher, 1970, Original value = -738.49 kcal/mol; ALS |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
36.19 | 298.15 | Ferrao and Pilcher, 1987 | Value given as Cp = 0.753 J K-1 g-1.; DH |
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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 531. | K | N/A | Lamneck, 1954 | Uncertainty assigned by TRC = 3. K; TRC |
Tfus | 527. | K | N/A | Lamneck, 1954 | Uncertainty assigned by TRC = 4. K; TRC |
Tfus | 529. | K | N/A | Lamneck, 1954 | Uncertainty assigned by TRC = 4. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 24.6 ± 0.1 | kcal/mol | C | Tan and Raphael, 1994 | AC |
ΔsubH° | 25.72 ± 0.26 | kcal/mol | C | Ferrao and Pilcher, 1987 | ALS |
ΔsubH° | 25.72 ± 0.26 | kcal/mol | C | Ferrao and Pilcher, 1987 | AC |
ΔsubH° | 21.0 ± 1.0 | kcal/mol | V | Bjellerup, 1959 | Heat of formation derived by Cox and Pilcher, 1970; ALS |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
25.7 ± 0.1 | 358. | ME | Ribeiro da Silva, Fonseca, et al., 2005 | Based on data from 349. to 366. K.; AC |
26.3 ± 0.2 | 358. | ME | Ribeiro da Silva, Fonseca, et al., 2005 | Based on data from 349. to 366. K.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
7.378 | 526.3 | DSC | Ribeiro da Silva, Fonseca, et al., 2005 | AC |
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
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.7 ± 0.2 | EI | Benoit, 1973 | LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C6H4Br+ | 15.1 ± 0.2 | CO+OH | EI | Benoit, 1973 | LLK |
C7H4OBr+ | 12.3 ± 0.2 | OH | EI | Benoit, 1973 | LLK |
IR Spectrum
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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
Gas Phase Spectrum
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Additional Data
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Owner | NIST Standard Reference Data Program Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | NIST Mass Spectrometry Data Center |
State | gas |
Instrument | HP-GC/MS/IRD |
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 | Chemical Concepts |
NIST MS number | 152955 |
UV/Visible spectrum
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Spectrum
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Additional Data
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Source | Lang (editor), 1968 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 19073 |
Instrument | Unicam SP 700 |
Melting point | 254 |
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
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Packed | SE-30 | 1415. | Peng, Ding, et al., 1988 | He, Supelcoport and Chromosorb, 40. C @ 4. min, 10. K/min, 250. C @ 60. min; Column length: 3.05 m |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Sabbah and Rojas Aguilar, 1996
Sabbah, R.; Rojas Aguilar, A.,
Thermodynamic study of the three isomers of bromo and iodobenzoic acids. Part II,
Struct. Chem., 1996, 7, 383-390. [all data]
Ferrao and Pilcher, 1987
Ferrao, M.C.C.H.; Pilcher, G.,
Enthalpies of combustion of the three bromobenzoic acids by rotating-bomb calorimetry,
J. Chem. Thermodyn., 1987, 19, 543-548. [all data]
Bjellerup, 1959
Bjellerup, L.,
A moving-bomb method for combustion calorimetry of organic bromine compounds,
Acta Chem. Scand., 1959, 13, 1511-1541. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Zhang, Xu, et al., 1990
Zhang, F.M.; Xu, G.D.; Qu, S.S.,
Studies on thermochemistry of porphyrins V. The standard energies of combustion and standard enthalpies of formation of bromoporphyrin compounds,
Acta Chimica Sinica, 1990, 48, 38-41. [all data]
Lamneck, 1954
Lamneck, J.H.,
Bromination of the two propylbenzenes and three butylbenzenes,
J. Am. Chem. Soc., 1954, 76, 1106. [all data]
Tan and Raphael, 1994
Tan, Z.-C.; Raphael, S.,
Thermodynamic study of the three isomers of bromobenzoic acid,
Sci. China, Ser. B: Chem., Life Sci., Earth Sci., 1994, 37, 6, 641. [all data]
Ribeiro da Silva, Fonseca, et al., 2005
Ribeiro da Silva, Manuel A.V.; Fonseca, José M.S.; Carvalho, Rui P.B.M.; Monte, Manuel J.S.,
Thermodynamic study of the sublimation of six halobenzoic acids,
The Journal of Chemical Thermodynamics, 2005, 37, 3, 271-279, https://doi.org/10.1016/j.jct.2004.09.005
. [all data]
Benoit, 1973
Benoit, F.,
Substituent effects in mass spectrometry. III. Substituent effects in the dissociation of the molecular ions of para and meta subtituted benzoic acids,
Org. Mass Spectrom., 1973, 7, 295. [all data]
Lang (editor), 1968
Lang (editor), L.,
Absorption Spectra in the Ultraviolet and Visible Region, 1968, 10, 87. [all data]
Peng, Ding, et al., 1988
Peng, C.T.; Ding, S.F.; Hua, R.L.; Yang, Z.C.,
Prediction of Retention Indexes I. Structure-Retention Index Relationship on Apolar Columns,
J. Chromatogr., 1988, 436, 137-172, https://doi.org/10.1016/S0021-9673(00)94575-8
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, NIST Free Links, References
- Symbols used in this document:
AE Appearance energy Cp,solid Constant pressure heat capacity of solid Tfus Fusion (melting) point ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔfusH Enthalpy of fusion ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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