Benzene, bromo-
- Formula: C6H5Br
- Molecular weight: 157.008
- IUPAC Standard InChIKey: QARVLSVVCXYDNA-UHFFFAOYSA-N
- CAS Registry Number: 108-86-1
- 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: Bromobenzene; Monobromobenzene; Phenyl bromide; 1-Bromobenzene; NCI-C55492; UN 2514
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Phase change data
Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), References, Notes
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
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
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 |
---|---|---|---|---|---|
Tboil | 429.1 ± 0.6 | K | AVG | N/A | Average of 27 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 242.4 ± 0.3 | K | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 242.42 | K | N/A | Marsh, 1987 | Uncertainty assigned by TRC = 0.02 K; recommended as fixed point for thermometry; TRC |
Ttriple | 242.400 | K | N/A | Masi and Scott, 1975 | Uncertainty assigned by TRC = 0.01 K; TRC |
Ttriple | 242.4 | K | N/A | Stull, 1937 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 10.65 | kcal/mol | N/A | Majer and Svoboda, 1985 | |
ΔvapH° | 10.7 | kcal/mol | N/A | Boublik, Fried, et al., 1984 | Based on data from 330. to 430. K. See also Basarová and Svoboda, 1991.; AC |
ΔvapH° | 10.6 ± 0.02 | kcal/mol | C | Wadsö, Luoma, et al., 1968 | AC |
ΔvapH° | 10.65 ± 0.01 | kcal/mol | C | Wadso, 1968 | ALS |
ΔvapH° | 9.05 ± 0.008 | kcal/mol | V | Mathews, 1926 | ALS |
Reduced pressure boiling point
Tboil (K) | Pressure (atm) | Reference | Comment |
---|---|---|---|
300.9 | 0.007 | Buckingham and Donaghy, 1982 | BS |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
10.1 | 348. | A | Stephenson and Malanowski, 1987 | Based on data from 333. to 463. K. See also Dykyj, 1972.; AC |
10.5 | 293. | C | Masi and Scott, 1975, 2 | AC |
10.1 | 344. | N/A | Dreyer, Martin, et al., 1955 | Based on data from 329. to 427. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
329.22 to 427.39 | 4.06631 | 1495.044 | -61.508 | Dreyer, Martin, et al., 1955 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
2.5578 | 242.40 | Masi and Scott, 1975, 3 | DH |
2.56 | 242.4 | Domalski and Hearing, 1996 | AC |
2.5399 | 242.43 | Stull, 1937, 2 | DH |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
10.55 | 242.40 | Masi and Scott, 1975, 3 | DH |
10.48 | 242.43 | Stull, 1937, 2 | DH |
Reaction thermochemistry data
Go To: Top, Phase change data, Mass spectrum (electron ionization), References, Notes
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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
C6H4Br- + =
By formula: C6H4Br- + H+ = C6H5Br
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 387.2 ± 2.5 | kcal/mol | Bran | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
ΔrH° | 384.0 ± 2.1 | kcal/mol | G+TS | Linnert and Riveros, 1994 | gas phase; Acidity between quinoline and benzonitrile; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 379.0 ± 2.6 | kcal/mol | H-TS | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
ΔrG° | 375.8 ± 2.0 | kcal/mol | IMRB | Linnert and Riveros, 1994 | gas phase; Acidity between quinoline and benzonitrile; B |
By formula: C6H7N+ + C6H5Br = (C6H7N+ • C6H5Br)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 13.6 | kcal/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 26. | cal/mol*K | N/A | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
5.1 | 325. | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
C6H4Br- + =
By formula: C6H4Br- + H+ = C6H5Br
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 383.5 ± 2.1 | kcal/mol | Bran | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 375.3 ± 2.2 | kcal/mol | H-TS | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
C6H4Br- + =
By formula: C6H4Br- + H+ = C6H5Br
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 392.8 ± 2.0 | kcal/mol | Bran | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 385.0 ± 2.1 | kcal/mol | H-TS | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
+ = C8H9Br +
By formula: C8H10 + C6H5Br = C8H9Br + C6H6
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -0.14 ± 0.0050 | kcal/mol | Cm | Merdzhanov, Alenin, et al., 1982 | gas phase; Heat of isomerization at 349 K; ALS |
By formula: 2C6H5Br + Br2Hg = C12H10Hg + 2Br2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 78.53 ± 0.80 | kcal/mol | Cm | Chernick, Skinner, et al., 1956 | liquid phase; ALS |
By formula: Cl- + C6H5Br = (Cl- • C6H5Br)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrG° | 6.80 | kcal/mol | TDEq | French, Ikuta, et al., 1982 | gas phase; B,M |
Mass spectrum (electron ionization)
Go To: Top, Phase change data, Reaction thermochemistry 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
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
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 | NIST Mass Spectrometry Data Center, 1998. |
NIST MS number | 291408 |
References
Go To: Top, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Marsh, 1987
Marsh, K.N.,
Recommended Reference Materials for the Realization of Physicochemical Properties, Blackwell Sci. Pub., Oxford, 1987. [all data]
Masi and Scott, 1975
Masi, J.F.; Scott, R.B.,
Some thermodynamic properties of bromobenzene from 0 to 1500k,
J. Res. Natl. Bur. Stand., Sect. A, 1975, 79, 619-28. [all data]
Stull, 1937
Stull, D.R.,
A Semi-micro Calorimeter for Measuring Heat Capacities at Low Temp.,
J. Am. Chem. Soc., 1937, 59, 2726. [all data]
Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E.,
The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [all data]
Basarová and Svoboda, 1991
Basarová, Pavlína; Svoboda, Václav,
Calculation of heats of vaporization of halogenated hydrocarbons from saturated vapour pressure data,
Fluid Phase Equilibria, 1991, 68, 13-34, https://doi.org/10.1016/0378-3812(91)85008-I
. [all data]
Wadsö, Luoma, et al., 1968
Wadsö, Ingemar; Luoma, Sinikka; Olson, Thomas; Norin, Torbjörn,
Heats of Vaporization of Organic Compounds. II. Chlorides, Bromides, and Iodides.,
Acta Chem. Scand., 1968, 22, 2438-2444, https://doi.org/10.3891/acta.chem.scand.22-2438
. [all data]
Wadso, 1968
Wadso, I.,
Heats of vaporization of organic compounds II. Chlorides, bromides, and iodides,
Acta Chem. Scand., 1968, 22, 2438. [all data]
Mathews, 1926
Mathews, J.H.,
The accurate measurement of heats of vaporization of liquids,
J. Am. Chem. Soc., 1926, 48, 562-576. [all data]
Buckingham and Donaghy, 1982
Buckingham, J.; Donaghy, S.M.,
Dictionary of Organic Compounds: Fifth Edition, Chapman and Hall, New York, 1982, 1. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Dykyj, 1972
Dykyj, J.,
Petrochemia, 1972, 12, 1, 13. [all data]
Masi and Scott, 1975, 2
Masi, Joseph F.; Scott, Russell B.,
Some thermodynamic properties of bromobenzene from 0 to 1500 K,
J. RES. NATL. BUR. STAN. SECT. A., 1975, 79A, 5, 619, https://doi.org/10.6028/jres.079A.022
. [all data]
Dreyer, Martin, et al., 1955
Dreyer, R.; Martin, W.; von Weber, U.,
Die S«65533»ttigungsdampfdrucke von Benzol, Toluol, «65533»thylbenzol, Styrol, Cumol und Brombenzol zwischen 10 und 760 Torr,
J. Prakt. Chem., 1955, 1, 5-6, 324-328, https://doi.org/10.1002/prac.19550010508
. [all data]
Masi and Scott, 1975, 3
Masi, J.F.; Scott, R.B.,
Some thermodynamic properties of bromobenzene from 0 to 1500K,
J. Res., 1975, NBS 79A, 619-628. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Stull, 1937, 2
Stull, D.R.,
A semi-micro calorimeter for measuring heat capacities at low temperatures,
J. Am. Chem. Soc., 1937, 59, 2726-2733. [all data]
Wenthold and Squires, 1995
Wenthold, P.G.; Squires, R.R.,
Determination of the gas-phase acidities of halogen-substituted aromatic compounds using the silane-cleavage method,
J. Mass Spectrom., 1995, 30, 1, 17, https://doi.org/10.1002/jms.1190300105
. [all data]
Linnert and Riveros, 1994
Linnert, H.V.; Riveros, J.M.,
Benzyne-related mechanisms in the gas phase ion molecule reactions of haloarenes,
Int. J. Mass Spectrom. Ion Proc., 1994, 140, 1, 163, https://doi.org/10.1016/0168-1176(94)04079-6
. [all data]
Meot-Ner (Mautner) and El-Shall, 1986
Meot-Ner (Mautner), M.; El-Shall, M.S.,
Ionic Charge Transfer Complexes. 1. Cationic Complexes with Delocalized and Partially Localized pi Systems,
J. Am. Chem. Soc., 1986, 108, 15, 4386, https://doi.org/10.1021/ja00275a026
. [all data]
Merdzhanov, Alenin, et al., 1982
Merdzhanov, V.R.; Alenin, V.I.; Nesterova, T.N.; Rozhnov, A.M.,
Study of equilibrium transformation of ethylbromobenzenes,
Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 1982, 25, 1047-1049. [all data]
Chernick, Skinner, et al., 1956
Chernick, C.L.; Skinner, H.A.; Wadso, I.,
Thermochemistry of metallic alkyls. Part 7.-The heat of formation of mercury diphenyl, and of mercury phenyl chloride,
Trans. Faraday Soc., 1956, 52, 1088-1093. [all data]
French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P.,
Hydrogen bonding of O-H and C-H hydrogen donors to Cl-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl- = RHCl-,
Can. J. Chem., 1982, 60, 1907. [all data]
Notes
Go To: Top, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), References
- Symbols used in this document:
T Temperature Tboil Boiling point Tfus Fusion (melting) point Ttriple Triple point temperature ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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