Acetaldehyde, hydroxy-

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Reaction thermochemistry data

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), 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: John E. Bartmess

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

C2H3O2- + Hydrogen cation = Acetaldehyde, hydroxy-

By formula: C2H3O2- + H+ = C2H4O2

Quantity Value Units Method Reference Comment
Δr>1536. ± 8.4kJ/molIMRBDawson and Nibbering, 1980gas phase; G3MP2B3 calculations put dGacid ca. 353 kcal/mol

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), References, Notes

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:
B - John E. Bartmess
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard

View reactions leading to C2H4O2+ (ion structure unspecified)

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CH3O+10.86 ± 0.05HCOEIHolmes and Lossing, 1984LBLHLM
CH4O+[CH2OH2+]10.42 ± 0.05COEIHolmes, Lossing, et al., 1982LBLHLM

De-protonation reactions

C2H3O2- + Hydrogen cation = Acetaldehyde, hydroxy-

By formula: C2H3O2- + H+ = C2H4O2

Quantity Value Units Method Reference Comment
Δr>1536. ± 8.4kJ/molIMRBDawson and Nibbering, 1980gas phase; G3MP2B3 calculations put dGacid ca. 353 kcal/mol; B

Mass spectrum (electron ionization)

Go To: Top, Reaction thermochemistry data, 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

Spectrum

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Mass spectrum
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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
NIST MS number 161

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References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes

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

Dawson and Nibbering, 1980
Dawson, J.H.J.; Nibbering, N.M.M., The gas phase anionic chemistry of saturated and unsaturated aliphatic nitriles, Int. J. Mass Spectrom. Ion Phys., 1980, 33, 3. [all data]

Holmes and Lossing, 1984
Holmes, J.L.; Lossing, F.P., Heats of formation of organic radicals from appearance energies, Int. J. Mass Spectrom. Ion Processes, 1984, 58, 113. [all data]

Holmes, Lossing, et al., 1982
Holmes, J.L.; Lossing, F.P.; Terlouw, J.K.; Burgers, P.C., The radical cation [CH2OH2]+ and related stable gas phase ion-dipole complexes, J. Am. Chem. Soc., 1982, 104, 2931. [all data]


Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References