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barbiturate anion


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

C4H3N2O3- + Hydrogen cation = Barbituric acid

By formula: C4H3N2O3- + H+ = C4H4N2O3

Quantity Value Units Method Reference Comment
Deltar1402. ± 12.kJ/molG+TSCumming and Kebarle, 1978gas phase; Acid: barbituric acid
Quantity Value Units Method Reference Comment
Deltar1369. ± 8.4kJ/molIMRECumming and Kebarle, 1978gas phase; Acid: barbituric acid

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry 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: John E. Bartmess

Protonation reactions

C4H3N2O3- + Hydrogen cation = Barbituric acid

By formula: C4H3N2O3- + H+ = C4H4N2O3

Quantity Value Units Method Reference Comment
Deltar1402. ± 12.kJ/molG+TSCumming and Kebarle, 1978gas phase; Acid: barbituric acid
Quantity Value Units Method Reference Comment
Deltar1369. ± 8.4kJ/molIMRECumming and Kebarle, 1978gas phase; Acid: barbituric acid

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Notes

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

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

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References