Benzene, bromo-

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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
Δfliquid58.6kJ/molCmHolm, 1973Grignard Rx; ALS
Δfliquid60.9 ± 4.1kJ/molCmChernick, Skinner, et al., 1956Reanalyzed by Cox and Pilcher, 1970, Original value = 59.0 kJ/mol; ALS
Quantity Value Units Method Reference Comment
Δcliquid-3111.9 ± 0.67kJ/molCcbSmith and Bjellerup, 1947ALS
Quantity Value Units Method Reference Comment
liquid21922.J/mol*KN/AMasi and Scott, 1975DH
liquid207.9J/mol*KN/AStull, 1937Extrapolation below 91 K, 55.86 J/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
155.9303.15Reddy, 1986T = 303.15, 313.15 K.; DH
154.29298.15Masi and Scott, 1975T = 11 to 300 K.; DH
155.39298.1Stull, 1937T = 90 to 320 K.; DH
145.6302.6de Kolossowsky and Udowenko, 1934DH
145.6302.6Kolosovskii and Udovenko, 1934DH
127.6231.7Andrews and Haworth, 1928T = 101 to 232 K. Value is unsmoothed experimental datum.; DH
151.5293.2Williams and Daniels, 1925T = 20 to 80°C.; DH
151.0298.von Reis, 1881T = 291 to 444 K.; DH

Reaction 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:
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- + Hydrogen cation = Benzene, bromo-

By formula: C6H4Br- + H+ = C6H5Br

Quantity Value Units Method Reference Comment
Δr1620. ± 10.kJ/molBranWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes; B
Δr1607. ± 8.8kJ/molG+TSLinnert and Riveros, 1994gas phase; Acidity between quinoline and benzonitrile; B
Quantity Value Units Method Reference Comment
Δr1586. ± 11.kJ/molH-TSWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes; B
Δr1572. ± 8.4kJ/molIMRBLinnert and Riveros, 1994gas phase; Acidity between quinoline and benzonitrile; B

C6H7N+ + Benzene, bromo- = (C6H7N+ • Benzene, bromo-)

By formula: C6H7N+ + C6H5Br = (C6H7N+ • C6H5Br)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr56.9kJ/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr110.J/mol*KN/AMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M

Free energy of reaction

ΔrG° (kJ/mol) T (K) Method Reference Comment
21.325.PHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M

C6H4Br- + Hydrogen cation = Benzene, bromo-

By formula: C6H4Br- + H+ = C6H5Br

Quantity Value Units Method Reference Comment
Δr1605. ± 8.8kJ/molBranWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes; B
Quantity Value Units Method Reference Comment
Δr1570. ± 9.2kJ/molH-TSWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes; B

C6H4Br- + Hydrogen cation = Benzene, bromo-

By formula: C6H4Br- + H+ = C6H5Br

Quantity Value Units Method Reference Comment
Δr1643. ± 8.4kJ/molBranWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes; B
Quantity Value Units Method Reference Comment
Δr1611. ± 8.8kJ/molH-TSWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes; B

Ethylbenzene + Benzene, bromo- = C8H9Br + Benzene

By formula: C8H10 + C6H5Br = C8H9Br + C6H6

Quantity Value Units Method Reference Comment
Δr-0.59 ± 0.021kJ/molCmMerdzhanov, Alenin, et al., 1982gas phase; Heat of isomerization at 349 K; ALS

2Benzene, bromo- + Mercury(II) bromide = Mercury, diphenyl- + 2Bromine

By formula: 2C6H5Br + Br2Hg = C12H10Hg + 2Br2

Quantity Value Units Method Reference Comment
Δr328.6 ± 3.3kJ/molCmChernick, Skinner, et al., 1956liquid phase; ALS

Chlorine anion + Benzene, bromo- = (Chlorine anion • Benzene, bromo-)

By formula: Cl- + C6H5Br = (Cl- • C6H5Br)

Quantity Value Units Method Reference Comment
Δr28.5kJ/molTDEqFrench, Ikuta, et al., 1982gas phase; B,M

References

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, 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]

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]

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

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