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Tert-butyl radical

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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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

View reactions leading to C4H9+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
Deltaf(+) ion711. ± 4.kJ/molN/AN/A 
Quantity Value Units Method Reference Comment
DeltafH(+) ion,0K734. ± 4.kJ/molN/AN/A 

Electron affinity determinations

EA (eV) Method Reference Comment
-0.162 ± 0.092D-EADePuy, Gronert, et al., 1989B
0.650462SIPage, 1972The Magnetron method, lacking mass analysis, is not considered reliable.; B
0.589753SIPage and Goode, 1969The Magnetron method, lacking mass analysis, is not considered reliable.; B

Ionization energy determinations

IE (eV) Method Reference Comment
6.70 ± 0.03PEHoule and Beauchamp, 1979LLK
6.58 ± 0.01PEDyke, Jonathan, et al., 1977LLK
6.93 ± 0.05EILossing and Semeluk, 1970RDSH
6.95 ± 0.05PEKoenig, Balle, et al., 1975Vertical value; LLK

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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]

Page, 1972
Page, F.M., Experimental determination of the electron affinities of inorganic radicals, Adv. Chem. Ser., 1972, 36, 68. [all data]

Page and Goode, 1969
Page, F.M.; Goode, G.C., Negative Ions and the Magnetron., Wiley, NY, 1969. [all data]

Houle and Beauchamp, 1979
Houle, F.A.; Beauchamp, J.L., Photoelectron spectroscopy of methyl, ethyl, isopropyl, and tert-butyl radicals. Implications for the thermochemistry and structures of the radicals and their corresponding carbonium ions, J. Am. Chem. Soc., 1979, 101, 4067. [all data]

Dyke, Jonathan, et al., 1977
Dyke, J.; Jonathan, N.; Lee, E.; Morris, A.; Winter, M., Vacuum ultraviolet photoelectron spectroscopy of transient species: Part 8, the t-butyl radical, Phys. Scr., 1977, 16, 197. [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]

Koenig, Balle, et al., 1975
Koenig, T.; Balle, T.; Snell, W., Helium(I) photoelectron spectra of organic radicals, J. Am. Chem. Soc., 1975, 97, 662. [all data]


Notes

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