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Benzene, bromo-

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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

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Individual Reactions

C6H4Br- + Hydrogen cation = Benzene, bromo-

By formula: C6H4Br- + H+ = C6H5Br

Quantity Value Units Method Reference Comment
Deltar1620. ± 10.kJ/molBranWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes; B
Deltar1607. ± 8.8kJ/molG+TSLinnert and Riveros, 1994gas phase; Acidity between quinoline and benzonitrile; B
Quantity Value Units Method Reference Comment
Deltar1586. ± 11.kJ/molH-TSWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes; B
Deltar1572. ± 8.4kJ/molIMRBLinnert and Riveros, 1994gas phase; Acidity between quinoline and benzonitrile; B

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

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

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Deltar56.9kJ/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Deltar110.J/mol*KN/AMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M

Free energy of reaction

DeltarG° (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
Deltar1605. ± 8.8kJ/molBranWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes; B
Quantity Value Units Method Reference Comment
Deltar1570. ± 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
Deltar1643. ± 8.4kJ/molBranWenthold and Squires, 1995gas phase; By HO- cleavage of substituted silanes; B
Quantity Value Units Method Reference Comment
Deltar1611. ± 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
Deltar-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
Deltar328.6 ± 3.3kJ/molCmChernick, Skinner, et al., 1956liquid phase; ALS

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

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

Quantity Value Units Method Reference Comment
Deltar28.5kJ/molTDEqFrench, Ikuta, et al., 1982gas phase; B,M

References

Go To: Top, Reaction thermochemistry data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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

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