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F2CHCO2 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 as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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Individual Reactions

C2HF2O2- + Hydrogen cation = Difluoroacetic acid

By formula: C2HF2O2- + H+ = C2H2F2O2

Quantity Value Units Method Reference Comment
Deltar1385. ± 9.2kJ/molG+TSCaldwell, Renneboog, et al., 1989gas phase; B
Deltar1385. ± 9.2kJ/molG+TSFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Deltar1384. ± 12.kJ/molG+TSCumming and Kebarle, 1978gas phase; B
Quantity Value Units Method Reference Comment
Deltar1355. ± 8.4kJ/molIMRECaldwell, Renneboog, et al., 1989gas phase; B
Deltar1355. ± 8.4kJ/molIMREFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Deltar1354. ± 8.4kJ/molIMRECumming and Kebarle, 1978gas phase; B

(C2HF2O2- bullet Water) + Water = (C2HF2O2- bullet 2Water)

By formula: (C2HF2O2- bullet H2O) + H2O = (C2HF2O2- bullet 2H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar51.5 ± 6.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. «DELTA»Saff approx. 24 cal/mol-K; B
Quantity Value Units Method Reference Comment
Deltar22.2 ± 1.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. «DELTA»Saff approx. 24 cal/mol-K; B,M

C2HF2O2- + Water = (C2HF2O2- bullet Water)

By formula: C2HF2O2- + H2O = (C2HF2O2- bullet H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar60.7 ± 6.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. «DELTA»Saff approx. 24 cal/mol-K; B
Quantity Value Units Method Reference Comment
Deltar31.4 ± 1.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. «DELTA»Saff approx. 24 cal/mol-K; B,M

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]

Fujio, McIver, et al., 1981
Fujio, M.; McIver, R.T., Jr.; Taft, R.W., Effects on the acidities of phenols from specific substituent-solvent interactions. Inherent substituent parameters from gas phase acidities, J. Am. Chem. Soc., 1981, 103, 4017. [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]

Blades, Klassen, et al., 1995
Blades, A.T.; Klassen, J.S.; Kebarle, P., Free Energies of Hydration in the Gas Phase on the Anions of Some Oxo Acids of C, N, S, P, Cl and I, J. Am. Chem. Soc., 1995, 117, 42, 10563, https://doi.org/10.1021/ja00147a019 . [all data]


Notes

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