Tert-butyl radical
- Formula: C4H9
- Molecular weight: 57.1143
- CAS Registry Number: 1605-73-8
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Gas phase thermochemistry data
Go To: Top, Vibrational and/or electronic energy levels, References, Notes
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 | 11. ± 0.7 | kcal/mol | N/A | Tsang, 1996 |
Vibrational and/or electronic energy levels
Go To: Top, Gas phase thermochemistry 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: Marilyn E. Jacox
State: 3d
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
Tx = 42900 | gas | 3d-X | Parkes and Quinn, 1975 | ||||
Parkes and Quinn, 1976 | |||||||
Wendt and Hunziker, 1984 | |||||||
State: 3p
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
Tx = 39500 | gas | 3p-X | Parkes and Quinn, 1976 | ||||
Wendt and Hunziker, 1984 | |||||||
State: 3s
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
Tx = 30000 | gas | 3s-X | Wendt and Hunziker, 1984 | ||||
State: X
Additional references: Jacox, 1994, page 384
Notes
vs | Very strong |
x | Energy separation between the band maximum of the excited electronic state and the v = 0 level of the ground state. |
References
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, 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]
Parkes and Quinn, 1975
Parkes, D.A.; Quinn, C.P.,
The ultraviolet absorption spectrum of tert-butyl radicals and the rate constant for their recombination,
Chem. Phys. Lett., 1975, 33, 3, 483, https://doi.org/10.1016/0009-2614(75)85757-5
. [all data]
Parkes and Quinn, 1976
Parkes, D.A.; Quinn, C.P.,
J. Chem. Soc., 1976, Faraday Trans. 1 72, 1952. [all data]
Wendt and Hunziker, 1984
Wendt, H.R.; Hunziker, H.E.,
The UV spectra of primary, secondary, and tertiary alkyl radicals,
J. Chem. Phys., 1984, 81, 2, 717, https://doi.org/10.1063/1.447755
. [all data]
Pacansky and Chang, 1981
Pacansky, J.; Chang, J.S.,
Infrared matrix isolation studies on the t-butyl radical,
J. Chem. Phys., 1981, 74, 10, 5539, https://doi.org/10.1063/1.440916
. [all data]
Schrader, Pacansky, et al., 1984
Schrader, B.; Pacansky, J.; Pfeiffer, U.,
Calculation of the frequencies and intensities in the infrared spectra of matrix-isolated tert-butyl radical and isobutane,
J. Phys. Chem., 1984, 88, 18, 4069, https://doi.org/10.1021/j150662a043
. [all data]
Bethune, 1981
Bethune, D.S.,
J. R. Lankard, 1981, P. P. Sorokin, A. J. Schell-Sorokin, R. M. Plecenik, and Ph. Avouris, J. Chem. Phys. 75, 2231. [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
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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