2-Bromopropanoic acid


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: John E. Bartmess

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Individual Reactions

C3H4BrO2- + Hydrogen cation = 2-Bromopropanoic acid

By formula: C3H4BrO2- + H+ = C3H5BrO2

Quantity Value Units Method Reference Comment
Δr1409. ± 8.8kJ/molG+TSCaldwell, Renneboog, et al., 1989gas phase
Δr1407. ± 8.8kJ/molG+TSCaldwell, McMahon, et al., 1985gas phase
Quantity Value Units Method Reference Comment
Δr1380. ± 8.4kJ/molIMRECaldwell, Renneboog, et al., 1989gas phase
Δr1377. ± 8.4kJ/molIMRECaldwell, McMahon, et al., 1985gas phase

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:
B - John E. Bartmess
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

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CHO2+11.82BrCHCH3EIHolmes and Lossing, 1988LL
C2H5Br+10.70CO2EIBlanchette, Holmes, et al., 1987LBLHLM

De-protonation reactions

C3H4BrO2- + Hydrogen cation = 2-Bromopropanoic acid

By formula: C3H4BrO2- + H+ = C3H5BrO2

Quantity Value Units Method Reference Comment
Δr1409. ± 8.8kJ/molG+TSCaldwell, Renneboog, et al., 1989gas phase; B
Δr1407. ± 8.8kJ/molG+TSCaldwell, McMahon, et al., 1985gas phase; B
Quantity Value Units Method Reference Comment
Δr1380. ± 8.4kJ/molIMRECaldwell, Renneboog, et al., 1989gas phase; B
Δr1377. ± 8.4kJ/molIMRECaldwell, McMahon, et al., 1985gas phase; B

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.

Caldwell, Renneboog, et al., 1989
Caldwell, G.; Renneboog, R.; Kebarle, P., Gas Phase Acidities of Aliphatic Carboxylic Acids, Based on Measurements of Proton Transfer Equilibria, Can. J. Chem., 1989, 67, 4, 661, https://doi.org/10.1139/v89-092 . [all data]

Caldwell, McMahon, et al., 1985
Caldwell, G.; McMahon, T.B.; Kebarle, P.; Bartmess, J.E.; Kiplinger, J.P., Methyl substituent effects in the gas phase acidities of halosubstituted oxygen acids. A realignment with substituent effects in solution, J. Am. Chem. Soc., 1985, 107, 80. [all data]

Holmes and Lossing, 1988
Holmes, J.L.; Lossing, F.P., Heats of formation and bond dissociation energies in halogen-substituted methyl and ethyl radicals, J. Am. Chem. Soc., 1988, 110, 7343. [all data]

Blanchette, Holmes, et al., 1987
Blanchette, M.C.; Holmes, J.L.; Lossing, F.P., The ethyl halides: Stable neutral and radical cation isomers [C2, H5, X] where X = F, Cl, Br, I, Org. Mass Spectrom., 1987, 22, 701. [all data]


Notes

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