n-Propyl radical
- Formula: C3H7
- Molecular weight: 43.0877
- IUPAC Standard InChIKey: OCBFFGCSTGGPSQ-UHFFFAOYSA-N
- CAS Registry Number: 2143-61-5
- Chemical structure:
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Gas phase 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.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 100. ± 2. | kJ/mol | N/A | Tsang, 1996 |
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 by: Robert C. Dunbar
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: Cr+ + C3H7 = (Cr+ • C3H7)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 134. ± 5.9 | kJ/mol | CIDT | Fisher and Armentrout, 1992 |
Gas phase ion energetics 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:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
View reactions leading to C3H7+ (ion structure unspecified)
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
-0.07 ± 0.12 | D-EA | DePuy, Gronert, et al., 1989 | B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.09 ± 0.01 | PE | Dyke, Ellis, et al., 1985 | LBLHLM |
8.15 ± 0.02 | PE | Schultz, Houle, et al., 1984 | LBLHLM |
8.10 ± 0.05 | EI | Lossing and Semeluk, 1970 | RDSH |
8.13 ± 0.05 | EI | Williams and Hamill, 1968 | RDSH |
8.2 ± 0.1 | EI | Melton and Hamill, 1964 | RDSH |
≤8.1 | PI | Elder, Giese, et al., 1962 | RDSH |
8.35 ± 0.01 | PE | Dyke, Ellis, et al., 1985 | Vertical value; LBLHLM |
8.43 ± 0.02 | PE | Schultz, Houle, et al., 1984 | Vertical value; LBLHLM |
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 by: 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: Cr+ + C3H7 = (Cr+ • C3H7)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 134. ± 5.9 | kJ/mol | CIDT | Fisher and Armentrout, 1992 |
Vibrational and/or electronic energy levels
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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 by: Marilyn E. Jacox
State: X
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
CH stretch | 3100 | Ar | IR | Pacansky, Horne, et al., 1977 | |||
CH stretch | 3018 | Ar | IR | Pacansky, Horne, et al., 1977 | |||
2-CH stretch | 2812 | Ar | IR | Pacansky, Horne, et al., 1977 | |||
RCH2 deform. | 530 | vs | Ar | IR | Pacansky, Horne, et al., 1977 | ||
Additional references: Jacox, 1994, page 383
Notes
vs | Very strong |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, NIST Free Links, NIST Subscription Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Tsang, 1996
Tsang, W.,
Heats of Formation of Organic Free Radicals by Kinetic Methods
in Energetics of Organic Free Radicals, Martinho Simoes, J.A.; Greenberg, A.; Liebman, J.F., eds., Blackie Academic and Professional, London, 1996, 22-58. [all data]
Fisher and Armentrout, 1992
Fisher, E.R.; Armentrout, P.B.,
Activation of Alkanes by Cr+: Unique Reactivity of Ground-State Cr+(6S) and Thermochemistry of Neutral and Ionic Chromium-Carbon Bonds,
J. Am. Chem. Soc., 1992, 114, 6, 2039, https://doi.org/10.1021/ja00032a017
. [all data]
DePuy, Gronert, et al., 1989
DePuy, C.H.; Gronert, S.; Barlow, S.E.; Bierbaum, V.M.; Damrauer, R.,
The Gas Phase Acidities of the Alkanes,
J. Am. Chem. Soc., 1989, 111, 6, 1968, https://doi.org/10.1021/ja00188a003
. [all data]
Dyke, Ellis, et al., 1985
Dyke, J.; Ellis, A.; Jonathan, N.; Morris, A.,
Vacuum ultraviolet photoelectron spectroscopy of transient species. Part 18. The cyclopropyl, isopropyl, an n-propyl radicals,
J. Chem. Soc. Faraday Trans. 2, 1985, 81, 1573. [all data]
Schultz, Houle, et al., 1984
Schultz, J.C.; Houle, F.A.; Beauchamp, J.L.,
Photoelectron spectroscopy of 1-propyl, 1-butyl, isobutyl, neopentyl and 2-butyl radicals: Free radical precursors to high energy carbonium ion isomers,
J. Am. Chem. Soc., 1984, 106, 3917. [all data]
Lossing and Semeluk, 1970
Lossing, F.P.; Semeluk, G.P.,
Free radicals by mass spectrometry. XLII.Ionization potentials and ionic heats of formation for C1-C4 alkyl radicals,
Can. J. Chem., 1970, 48, 955. [all data]
Williams and Hamill, 1968
Williams, J.M.; Hamill, W.H.,
Ionization potentials of molecules and free radicals and appearance potentials by electron impact in the mass spectrometer,
J. Chem. Phys., 1968, 49, 4467. [all data]
Melton and Hamill, 1964
Melton, C.E.; Hamill, W.H.,
Ionization potentials of alkyl free radicals and of benzene, toluene, and triethylamine by the RPD technique,
J. Chem. Phys., 1964, 41, 3464. [all data]
Elder, Giese, et al., 1962
Elder, F.A.; Giese, C.; Steiner, B.; Inghram, M.,
Photo-ionization of alkyl free radicals,
J. Chem. Phys., 1962, 36, 3292. [all data]
Pacansky, Horne, et al., 1977
Pacansky, J.; Horne, D.E.; Gardini, G.P.; Bargon, J.,
Matrix isolation studies of alkyl radicals. The characteristic infrared spectra of primary alkyl radicals,
J. Phys. Chem., 1977, 81, 23, 2149, https://doi.org/10.1021/j100538a003
. [all data]
Jacox, 1994
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]
Notes
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- Symbols used in this document:
EA Electron affinity ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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