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1,3-Cyclopentanedione

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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

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

C5H5O2- + Hydrogen cation = 1,3-Cyclopentanedione

By formula: C5H5O2- + H+ = C5H6O2

Quantity Value Units Method Reference Comment
Deltar1395. ± 8.8kJ/molG+TSMishima, Matsuoka, et al., 2004gas phase; Calc: keto form of acid more stable.
Quantity Value Units Method Reference Comment
Deltar1366. ± 8.4kJ/molIMREMishima, Matsuoka, et al., 2004gas phase; Calc: keto form of acid more stable.

References

Go To: Top, Reaction thermochemistry data, Notes

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

Mishima, Matsuoka, et al., 2004
Mishima, M.; Matsuoka, M.; Lei, Y.X.; Rappoport, Z., Gas-phase acidities of disubstituted methanes and of enols of carboxamides substituted by electron-withdrawing groups, J. Org. Chem., 2004, 69, 18, 5947-5965, https://doi.org/10.1021/jo040196b . [all data]


Notes

Go To: Top, Reaction thermochemistry data, References