Hydroxymethyl radical


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
Δfgas-9. ± 4.kJ/molN/ATsang, 1996 

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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to CH3O+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
Proton affinity (review)695.kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity662.5kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Δf(+) ion718. ± 2.kJ/molN/AN/A 

Ionization energy determinations

IE (eV) Method Reference Comment
7.562 ± 0.004EVALJohnson and Hudgens, 1996LL
7.553 ± 0.006PIBerkowitz, Ellison, et al., 1994Unpublished results of B. Ruscic and J. Berkowitz; LL
7.56 ± 0.02PITao, Klemm, et al., 1992LL
7.56 ± 0.01PEDyke, Ellis, et al., 1984LBLHLM
7.6DERGriller and Lossing, 1981LLK
8.14 ± 0.15EIFisher and Henderson, 1967RDSH
8.14 ± 0.01PEDyke, Ellis, et al., 1984Vertical value; LBLHLM

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CHO+8.61H2PITao, Klemm, et al., 1992LL

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.

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]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Johnson and Hudgens, 1996
Johnson, R.D., III; Hudgens, J.W., Structural and thermochemical properties of hydroxymethyl (CH2OH) radicals and cations derived from observations of B 2A'(3p)←X 2A" electronic spectra and from ab initio calculations, J. Phys. Chem., 1996, 100, 19874. [all data]

Berkowitz, Ellison, et al., 1994
Berkowitz, J.; Ellison, G.B.; Gutman, D., Three methods to measure RH bond energies, J. Phys. Chem., 1994, 98, 2744. [all data]

Tao, Klemm, et al., 1992
Tao, W.; Klemm, R.B.; Nesbitt, F.L.; Stief, J.L., A discharge flow-photoionization mass spectrometric study of hydroxymethyl radicals (H2COH and H2COD): Photoionization spectrum and ionization energy, J. Phys. Chem., 1992, 96, 104. [all data]

Dyke, Ellis, et al., 1984
Dyke, J.M.; Ellis, A.R.; Jonathan, N.; Keddar, N.; Morris, A., Observation of the CH2OH radical in the gas Ppase by vacuum ultraviolet photoelectron spectroscopy, Chem. Phys. Lett., 1984, 111, 207. [all data]

Griller and Lossing, 1981
Griller, D.; Lossing, F.P., On the thermochemistry of α-aminoalkyl radicals, J. Am. Chem. Soc., 1981, 103, 1586. [all data]

Fisher and Henderson, 1967
Fisher, I.P.; Henderson, E., Mass spectrometry of free radicals, J. Chem. Soc. Faraday Trans., 1967, 63, 1342. [all data]


Notes

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