Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

FCH2CO2 anion


Reaction thermochemistry data

Go To: Top, References, Notes

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

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

FCH2CO2 anion + Hydrogen cation = Fluoroacetic acid

By formula: C2H2FO2- + H+ = C2H3FO2

Quantity Value Units Method Reference Comment
Deltar1418. ± 9.2kJ/molG+TSCaldwell, Renneboog, et al., 1989gas phase; B
Deltar1417. ± 9.2kJ/molG+TSFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Deltar1416. ± 12.kJ/molG+TSCumming and Kebarle, 1978gas phase; B
Quantity Value Units Method Reference Comment
Deltar1387. ± 8.4kJ/molIMRECaldwell, Renneboog, et al., 1989gas phase; B
Deltar1386. ± 8.4kJ/molIMREFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Deltar1385. ± 8.4kJ/molIMRECumming and Kebarle, 1978gas phase; B

(FCH2CO2 anion bullet 2Water) + Water = (FCH2CO2 anion bullet 3Water)

By formula: (C2H2FO2- bullet 2H2O) + H2O = (C2H2FO2- bullet 3H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar48.5 ± 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
Deltar19.2 ± 1.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. «DELTA»Saff approx. 24 cal/mol-K; B,M

(FCH2CO2 anion bullet Water) + Water = (FCH2CO2 anion bullet 2Water)

By formula: (C2H2FO2- bullet H2O) + H2O = (C2H2FO2- bullet 2H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar54.0 ± 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
Deltar24.7 ± 1.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. «DELTA»Saff approx. 24 cal/mol-K; B,M

FCH2CO2 anion + Water = (FCH2CO2 anion bullet Water)

By formula: C2H2FO2- + H2O = (C2H2FO2- bullet H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar64.0 ± 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
Deltar34.7 ± 1.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. «DELTA»Saff approx. 24 cal/mol-K; B,M

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.

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

Go To: Top, Reaction thermochemistry data, References