Ethyl bromide
- Formula: C2H5Br
- Molecular weight: 108.965
- IUPAC Standard InChI: InChI=1S/C2H5Br/c1-2-3/h2H2,1H3
- IUPAC Standard InChIKey: RDHPKYGYEGBMSE-UHFFFAOYSA-N
- CAS Registry Number: 74-96-4
- 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: Ethane, bromo-; Bromic ether; Bromoethane; Hydrobromic ether; Monobromoethane; C2H5Br; 1-Bromoethane; Bromure d'ethyle; Etylu bromek; Halon 2001; NCI-C55481; UN 1891; NSC 8824
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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
+
= (
•
)
By formula: Br- + C2H5Br = (Br- • C2H5Br)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 50.2 ± 4.2 | kJ/mol | TDAs | Li, Ross, et al., 1996 | gas phase; B |
| ΔrH° | 48.53 | kJ/mol | TDAs | Dougherty, 1974 | gas phase; B,M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 80.3 | J/mol*K | HPMS | Dougherty, 1974 | gas phase; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 24.7 ± 0.84 | kJ/mol | TDAs | Li, Ross, et al., 1996 | gas phase; B |
| ΔrG° | 24.7 | kJ/mol | TDAs | Dougherty, 1974 | gas phase; B |
+
= (
•
)
By formula: Cl- + C2H5Br = (Cl- • C2H5Br)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 56.9 ± 4.2 | kJ/mol | TDAs | Li, Ross, et al., 1996 | gas phase; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 29.0 ± 0.84 | kJ/mol | TDAs | Li, Ross, et al., 1996 | gas phase; B |
=
+
By formula: C2H5Br = HBr + C2H4
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 80.3 ± 2.1 | kJ/mol | Eqk | Lane, Linnett, et al., 1953 | gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = 79.9 kJ/mol; ALS |
+
=
+
By formula: H2 + C2H5Br = HBr + C2H6
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -59.0 ± 1.1 | kJ/mol | Chyd | Fowell, Lacher, et al., 1965 | gas phase; ALS |
+ 2
= 2
+
By formula: H2 + 2C2H5Br = 2C2H6 + Br2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 23. ± 13. | kJ/mol | Chyd | Ashcroft, Carson, et al., 1965 | liquid phase; ALS |
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.
Li, Ross, et al., 1996
Li, C.; Ross, P.; Szulejko, J.; McMahon, T.B.,
High-Pressure Mass Spectrometric Investigations of the Potential Energy Surfaces of Gas-Phase Sn2 Reactions.,
J. Am. Chem. Soc., 1996, 118, 39, 9360, https://doi.org/10.1021/ja960565o
. [all data]
Dougherty, 1974
Dougherty, R.C.,
SN2 reactions in the gas phase. Alkyl group structural effects,
Org. Mass Spectrom., 1974, 8, 85. [all data]
Lane, Linnett, et al., 1953
Lane, M.R.; Linnett, J.W.; Oswin, H.G.,
A study of the C2H4+HCl=C2H5Cl and C2H4+Hbr=C2H5Br equilibria,
Proc. Roy. Soc. London A, 1953, 216, 361-374. [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]
Fowell, Lacher, et al., 1965
Fowell, P.; Lacher, J.R.; Park, J.D.,
Reaction heats of organic compounds. Part 3.-Heats of hydrogenation of methyl bromide and ethyl bromide,
Trans. Faraday Soc., 1965, 61, 1324-1327. [all data]
Ashcroft, Carson, et al., 1965
Ashcroft, S.J.; Carson, A.S.; Carter, W.; Laye, P.G.,
Thermochemistry of reductions caused by lithium aluminium hydride. Part 3.- The C-halogen bond dissociation energies in ethyl iodine and ethyl bromide,
Trans. Faraday Soc., 1965, 61, 225-229. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
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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