Propane, 1-bromo-2-methyl-
- Formula: C4H9Br
- Molecular weight: 137.018
- IUPAC Standard InChIKey: HLVFKOKELQSXIQ-UHFFFAOYSA-N
- CAS Registry Number: 78-77-3
- 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: Isobutyl bromide; 1-Bromo-2-methylpropane; iso-C4H9Br; i-Butyl bromide; UN 2342
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Gas phase ion energetics data
Go To: Top, Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
L - Sharon G. Lias
Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 10.09 ± 0.02 | eV | N/A | N/A | L |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
10.11 | EST | Luo and Pacey, 1992 | LL |
10.09 | PE | Kimura, Katsumata, et al., 1981 | LLK |
10.10 ± 0.015 | PE | Hashmall and Heilbronner, 1970 | RDSH |
10.09 ± 0.02 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
Gas Chromatography
Go To: Top, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | Squalane | 27. | 666. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 49. | 671. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 67. | 676. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 86. | 680. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 65. | 674. | Adlard, Evans, et al., 1965 | Ar, Celite; Column length: 1.2 m |
Packed | Squalane | 78. | 677. | Adlard, Evans, et al., 1965 | Ar, Celite; Column length: 1.2 m |
Packed | Squalane | 100. | 680. | Adlard, Evans, et al., 1965 | Ar, Celite; Column length: 1.5 m |
Packed | Squalane | 65. | 672. | Adlard, Evans, et al., 1965 | Ar, Celite; Column length: 1.5 m |
Packed | Squalane | 78. | 675. | Adlard, Evans, et al., 1965 | Ar, Celite; Column length: 1.5 m |
Packed | Squalane | 100. | 681. | Adlard, Evans, et al., 1965 | N2, Celite; Column length: 1.8 m |
Packed | Squalane | 65. | 673. | Adlard, Evans, et al., 1965 | N2, Celite; Column length: 1.8 m |
Packed | Squalane | 78. | 676. | Adlard, Evans, et al., 1965 | N2, Celite; Column length: 1.8 m |
Packed | Squalane | 100. | 679. | Adlard, Evans, et al., 1965 | Mixture, Celite; Column length: 1.5 m |
Packed | Squalane | 65. | 673. | Adlard, Evans, et al., 1965 | Mixture, Celite; Column length: 1.5 m |
Packed | Squalane | 78. | 676. | Adlard, Evans, et al., 1965 | Mixture, Celite; Column length: 1.5 m |
Packed | Squalane | 100. | 686. | Adlard, Evans, et al., 1965 | He, Celite; Column length: 0.9 m |
Packed | Squalane | 65. | 677. | Adlard, Evans, et al., 1965 | He, Celite; Column length: 0.9 m |
Packed | Squalane | 78. | 679. | Adlard, Evans, et al., 1965 | He, Celite; Column length: 0.9 m |
Packed | Squalane | 100. | 682. | Adlard, Evans, et al., 1965 | |
Packed | Squalane | 65. | 674. | Adlard, Evans, et al., 1965 | |
Packed | Squalane | 78. | 677. | Adlard, Evans, et al., 1965 | |
Packed | Apiezon L | 130. | 711. | von Kováts, 1958 | Celite (40:60 Gewichtsverhaltnis) |
Packed | Apiezon L | 70. | 699. | von Kováts, 1958 | Celite (40:60 Gewichtsverhaltnis) |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Methyl Silicone | 677. | Zenkevich and Marinichev, 2001 | Program: not specified |
References
Go To: Top, Gas phase ion energetics data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Luo and Pacey, 1992
Luo, Y.-R.; Pacey, P.D.,
Effects of alkyl substitution on ionization energies of alkanes and haloalkanes and on heats of formation of their molecular cations. Part 2. Alkanes and chloro-, bromo- and iodoalkanes,
Int. J. Mass Spectrom. Ion Processes, 1992, 112, 63. [all data]
Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S.,
Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules
in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [all data]
Hashmall and Heilbronner, 1970
Hashmall, J.A.; Heilbronner, E.,
n-Ionization potentials of alkyl bromides,
Angew. Chem. Intern. Ed., 1970, 9, 305. [all data]
Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J.,
Ionization potentials of some molecules,
J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]
Hively and Hinton, 1968
Hively, R.A.; Hinton, R.E.,
Variation of the retention index with temperature on squalane substrates,
J. Gas Chromatogr., 1968, 6, 4, 203-217, https://doi.org/10.1093/chromsci/6.4.203
. [all data]
Adlard, Evans, et al., 1965
Adlard, E.R.; Evans, M.B.; Butlin, A.G.; Evans, R.S.; Hill, R.; Huber, J.F.K.; Littlewood, A.B.; McCambley, W.G.; Smith, J.F.; Swanton, W.T.; Swoboda, P.A.T.,
Recommendations of the data sub-committee for the publication of retention data,
J. Gas Chromatogr., 1965, 3, 9, 298-302, https://doi.org/10.1093/chromsci/3.9.298
. [all data]
von Kováts, 1958
von Kováts, E.,
206. Gas-chromatographische Charakterisierung organischer Verbindungen. Teil 1: Retentionsindices aliphatischer Halogenide, Alkohole, Aldehyde und Ketone,
Helv. Chim. Acta, 1958, 41, 7, 1915-1932, https://doi.org/10.1002/hlca.19580410703
. [all data]
Zenkevich and Marinichev, 2001
Zenkevich, I.G.; Marinichev, A.N.,
Comparison of Topological and Dynamics Molecular Characteristics for Precalculation of Chromatographic Retention Parameters of Organic Compounds (in Russian),
Zh. Struct. Khim., 2001, 42, 5, 893-902. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Gas Chromatography, References
- Symbols used in this document:
IE (evaluated) Recommended ionization energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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