Barbituric acid

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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:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV) Method Reference Comment
10.20PEDougherty, Younathan, et al., 1978LLK

De-protonation reactions

C4H3N2O3- + Hydrogen cation = Barbituric acid

By formula: C4H3N2O3- + H+ = C4H4N2O3

Quantity Value Units Method Reference Comment
Δr1402. ± 12.kJ/molG+TSCumming and Kebarle, 1978gas phase; Acid: barbituric acid; B
Quantity Value Units Method Reference Comment
Δr1369. ± 8.4kJ/molIMRECumming and Kebarle, 1978gas phase; Acid: barbituric acid; 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.

Dougherty, Younathan, et al., 1978
Dougherty, D.; Younathan, E.S.; Voll, R.; Abdulnur, S.; McGlynn, S.P., Photoelectron spectroscopy of some biological molecules, J. Electron Spectrosc. Relat. Phenom., 1978, 13, 379. [all data]

Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P., Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A), Can. J. Chem., 1978, 56, 1. [all data]


Notes

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