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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Condensed phase thermochemistry data
Go To: Top, Phase change data, Reaction thermochemistry data, IR Spectrum, 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:
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°liquid | 14.0 | kcal/mol | Cm | Holm, 1973 | Grignard Rx; ALS |
ΔfH°liquid | 14.55 ± 0.99 | kcal/mol | Cm | Chernick, Skinner, et al., 1956 | Reanalyzed by Cox and Pilcher, 1970, Original value = 14.1 kcal/mol; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -743.75 ± 0.16 | kcal/mol | Ccb | Smith and Bjellerup, 1947 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 5239.5 | cal/mol*K | N/A | Masi and Scott, 1975 | DH |
S°liquid | 49.69 | cal/mol*K | N/A | Stull, 1937 | Extrapolation below 91 K, 55.86 J/mol*K.; DH |
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
37.26 | 303.15 | Reddy, 1986 | T = 303.15, 313.15 K.; DH |
36.876 | 298.15 | Masi and Scott, 1975 | T = 11 to 300 K.; DH |
37.139 | 298.1 | Stull, 1937 | T = 90 to 320 K.; DH |
34.80 | 302.6 | de Kolossowsky and Udowenko, 1934 | DH |
34.80 | 302.6 | Kolosovskii and Udovenko, 1934 | DH |
30.50 | 231.7 | Andrews and Haworth, 1928 | T = 101 to 232 K. Value is unsmoothed experimental datum.; DH |
36.21 | 293.2 | Williams and Daniels, 1925 | T = 20 to 80°C.; DH |
36.09 | 298. | von Reis, 1881 | T = 291 to 444 K.; DH |
Phase change data
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, IR Spectrum, 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, 2 | Uncertainty assigned by TRC = 0.01 K; TRC |
Ttriple | 242.4 | K | N/A | Stull, 1937, 2 | 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, 3 | 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 | DH |
2.56 | 242.4 | Domalski and Hearing, 1996 | AC |
2.5399 | 242.43 | Stull, 1937 | DH |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
10.55 | 242.40 | Masi and Scott, 1975 | DH |
10.48 | 242.43 | Stull, 1937 | DH |
Reaction thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, 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 |
IR Spectrum
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References, Notes
Data compiled by: Coblentz Society, Inc.
- SOLUTION (10% CCl4 FOR 3800-1330, 10% CS2 FOR 1330-450 CM-1); DOW KBr FOREPRISM-GRATING; 2 cm-1 resolution
- SOLUTION (2% CCl4 FOR 3800-1330, 2% CS2 FOR 1330-450 CM-1); DOW KBr FOREPRISM-GRATING; 2 cm-1 resolution
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Holm, 1973
Holm, T.,
Thermochemistry of Grignard reagents. Enthalpies of formation of alkylmagnesium bromides and of alkyl bromides,
J. Organomet. Chem., 1973, 56, 87-93. [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]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Smith and Bjellerup, 1947
Smith, L.; Bjellerup, L.,
Neue Versuche mit beweglicher calorimetrischer Bombe,
Acta Chem. Scand., 1947, 1, 566-570. [all data]
Masi and Scott, 1975
Masi, J.F.; Scott, R.B.,
Some thermodynamic properties of bromobenzene from 0 to 1500K,
J. Res., 1975, NBS 79A, 619-628. [all data]
Stull, 1937
Stull, D.R.,
A semi-micro calorimeter for measuring heat capacities at low temperatures,
J. Am. Chem. Soc., 1937, 59, 2726-2733. [all data]
Reddy, 1986
Reddy, K.S.,
Isentropic compressibilities of binary liquid mixtures at 303.15 and 313.15 K,
J. Chem. Eng. Data, 1986, 31, 238-240. [all data]
de Kolossowsky and Udowenko, 1934
de Kolossowsky, N.; Udowenko, W.W.,
Determination des chaleurs specifiques des liquides,
Compt. rend., 1934, 198, 1394-1395. [all data]
Kolosovskii and Udovenko, 1934
Kolosovskii, N.A.; Udovenko, W.W.,
Specific heat of liquids. II.,
Zhur. Obshchei Khim., 1934, 4, 1027-1033. [all data]
Andrews and Haworth, 1928
Andrews, D.H.; Haworth, E.,
An application of the rule of Dulong and Petit to molecules,
J. Am. Chem. Soc., 1928, 50, 2998-3002. [all data]
Williams and Daniels, 1925
Williams, J.W.; Daniels, F.,
The specific heats of binary mixtures,
J. Am. Chem. Soc., 1925, 47, 1490-1503. [all data]
von Reis, 1881
von Reis, M.A.,
Die specifische Wärme flüssiger organischer Verbindungen und ihre Beziehung zu deren Moleculargewicht,
Ann. Physik [3], 1881, 13, 447-464. [all data]
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, 2
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, 2
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, 3
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]
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]
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
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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]
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, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions T Temperature Tboil Boiling point Tfus Fusion (melting) point Ttriple Triple point temperature ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions 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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