Propane, 2-bromo-2-methyl-
- Formula: C4H9Br
- Molecular weight: 137.018
- IUPAC Standard InChIKey: RKSOPLXZQNSWAS-UHFFFAOYSA-N
- CAS Registry Number: 507-19-7
- 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: tert-Butyl bromide; Trimethylbromomethane; 2-Bromo-2-methylpropane; 2-Bromoisobutane; tert-C4H9Br; t-Butyl bromide; Bromotrimethylmethane; Tertiarybutyl bromide; Butylbromide, tert-; 1,1-Dimethylethyl bromide; 2-Methyl-2-bromopropane; NSC 8418
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Ion clustering 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
RCD - Robert C. Dunbar
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
By formula: Br- + C4H9Br = (Br- • C4H9Br)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 65.3 ± 4.2 | kJ/mol | TDAs | Li, Ross, et al., 1996 | gas phase; B |
ΔrH° | 51.88 | kJ/mol | TDAs | Dougherty, 1974 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 80.8 | J/mol*K | HPMS | Dougherty, 1974 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 30.5 ± 0.84 | kJ/mol | TDAs | Li, Ross, et al., 1996 | gas phase; B |
ΔrG° | 28.0 | kJ/mol | TDAs | Dougherty, 1974 | gas phase; B |
By formula: Cl- + C4H9Br = (Cl- • C4H9Br)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 74.1 ± 4.2 | kJ/mol | TDAs | Li, Ross, et al., 1996 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 37.2 ± 0.84 | kJ/mol | TDAs | Li, Ross, et al., 1996 | gas phase; B |
By formula: F- + C4H9Br = (F- • C4H9Br)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 93.3 ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1983 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 64.0 ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1983 | gas phase; B |
By formula: Na+ + C4H9Br = (Na+ • C4H9Br)
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
57.3 | 298. | IMRE | McMahon and Ohanessian, 2000 | Anchor alanine=39.89; RCD |
References
Go To: Top, Ion clustering 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]
Larson and McMahon, 1983
Larson, J.W.; McMahon, T.B.,
Strong hydrogen bonding in gas-phase anions. An ion cyclotron resonance determination of fluoride binding energetics to bronsted acids from gas-phase fluoride exchange equilibria measurements,
J. Am. Chem. Soc., 1983, 105, 2944. [all data]
McMahon and Ohanessian, 2000
McMahon, T.B.; Ohanessian, G.,
An Experimental and Ab Initio Study of the Nature of the Binding in Gas-Phase Complexes of Sodium Ions,
Chem. Eur. J., 2000, 6, 16, 2931, https://doi.org/10.1002/1521-3765(20000818)6:16<2931::AID-CHEM2931>3.0.CO;2-7
. [all data]
Notes
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- 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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