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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Reaction thermochemistry data
Go To: Top, 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° | 1620. ± 10. | kJ/mol | Bran | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
ΔrH° | 1607. ± 8.8 | kJ/mol | G+TS | Linnert and Riveros, 1994 | gas phase; Acidity between quinoline and benzonitrile; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1586. ± 11. | kJ/mol | H-TS | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
ΔrG° | 1572. ± 8.4 | kJ/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° | 56.9 | kJ/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | N/A | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
21. | 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° | 1605. ± 8.8 | kJ/mol | Bran | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1570. ± 9.2 | kJ/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° | 1643. ± 8.4 | kJ/mol | Bran | Wenthold and Squires, 1995 | gas phase; By HO- cleavage of substituted silanes; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1611. ± 8.8 | kJ/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° | -0.59 ± 0.021 | kJ/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° | 328.6 ± 3.3 | kJ/mol | Cm | Chernick, Skinner, et al., 1956 | liquid phase; ALS |
By formula: Cl- + C6H5Br = (Cl- • C6H5Br)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrG° | 28.5 | kJ/mol | TDEq | French, Ikuta, et al., 1982 | gas 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
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
T Temperature ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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