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HCO2 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

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

HCO2 anion + Hydrogen cation = Formic acid

By formula: CHO2- + H+ = CH2O2

Quantity Value Units Method Reference Comment
Deltar1449. ± 5.0kJ/molD-EAKim, Bradforth, et al., 1995gas phase; dHacid(0K) = 344.67±0.62 kcal/mol; B
Deltar1445. ± 9.2kJ/molG+TSCaldwell, Renneboog, et al., 1989gas phase; B
Deltar1445. ± 9.2kJ/molG+TSFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Deltar1444. ± 12.kJ/molG+TSCumming and Kebarle, 1978gas phase; B
Deltar1423. ± 19.kJ/molEIAEMuftakhov, Vasil'ev, et al., 1999gas phase; B
Quantity Value Units Method Reference Comment
Deltar1419. ± 6.3kJ/molH-TSKim, Bradforth, et al., 1995gas phase; dHacid(0K) = 344.67±0.62 kcal/mol; B
Deltar1415. ± 8.4kJ/molIMRECaldwell, Renneboog, et al., 1989gas phase; B
Deltar1416. ± 8.4kJ/molIMREFujio, McIver, et al., 1981gas phase; value altered from reference due to change in acidity scale; B
Deltar1415. ± 8.4kJ/molIMRECumming and Kebarle, 1978gas phase; B

HCO2 anion + Water = (HCO2 anion bullet Water)

By formula: CHO2- + H2O = (CHO2- bullet H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar66.9 ± 4.2kJ/molTDAsMeot-Ner and Sieck, 1986gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar96.2J/mol*KPHPMSMeot-Ner and Sieck, 1986gas phase; M
Quantity Value Units Method Reference Comment
Deltar38. ± 6.7kJ/molTDAsMeot-Ner and Sieck, 1986gas phase; B
Deltar35.1 ± 0.84kJ/molN/AViidanoja, Reiner, et al., 2000gas phase; B
Deltar38.5 ± 1.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. «DELTA»Saff approx. 24 cal/mol-K; B,M

HCO2 anion + Hydrogen cyanide = (HCO2 anion bullet Hydrogen cyanide)

By formula: CHO2- + CHN = (CHO2- bullet CHN)

Quantity Value Units Method Reference Comment
Deltar92.0kJ/molPHPMSMeot-ner, 1988gas phase; M,B,M
Quantity Value Units Method Reference Comment
Deltar92.J/mol*KN/AMeot-ner, Cybulski, et al., 1988gas phase; Entropy change calculated or estimated; M
Deltar89.5J/mol*KPHPMSMeot-ner, 1988gas phase; M
Quantity Value Units Method Reference Comment
Deltar65.3 ± 6.7kJ/molTDAsMeot-ner, Cybulski, et al., 1988gas phase; Entropy of 22.0 eu assumed.; B

Free energy of reaction

DeltarG° (kJ/mol) T (K) Method Reference Comment
49.4473.PHPMSMeot-ner, Cybulski, et al., 1988gas phase; Entropy change calculated or estimated; M

(HCO2 anion bullet Hydrogen cyanide) + Hydrogen cyanide = (HCO2 anion bullet 2Hydrogen cyanide)

By formula: (CHO2- bullet CHN) + CHN = (CHO2- bullet 2CHN)

Quantity Value Units Method Reference Comment
Deltar74.5kJ/molPHPMSMeot-ner, 1988gas phase; M,B,M
Quantity Value Units Method Reference Comment
Deltar92.J/mol*KN/AMeot-ner, Cybulski, et al., 1988gas phase; Entropy change calculated or estimated; M
Deltar98.7J/mol*KPHPMSMeot-ner, 1988gas phase; M
Quantity Value Units Method Reference Comment
Deltar44.77kJ/molTDAsMeot-ner, Cybulski, et al., 1988gas phase; Entropy estimated; B

Free energy of reaction

DeltarG° (kJ/mol) T (K) Method Reference Comment
40.350.PHPMSMeot-ner, Cybulski, et al., 1988gas phase; Entropy change calculated or estimated; M

(HCO2 anion bullet 2Water) + Water = (HCO2 anion bullet 3Water)

By formula: (CHO2- bullet 2H2O) + H2O = (CHO2- bullet 3H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar50.6 ± 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
Deltar21.3 ± 1.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. «DELTA»Saff approx. 24 cal/mol-K; B,M
Deltar21.8 ± 0.84kJ/molN/AViidanoja, Reiner, et al., 2000gas phase; B

(HCO2 anion bullet Water) + Water = (HCO2 anion bullet 2Water)

By formula: (CHO2- bullet H2O) + H2O = (CHO2- bullet 2H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar57.7 ± 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
Deltar28.5 ± 1.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. «DELTA»Saff approx. 24 cal/mol-K; B,M
Deltar28.9 ± 0.84kJ/molN/AViidanoja, Reiner, et al., 2000gas phase; B

HCO2 anion + Formic acid = (HCO2 anion bullet Formic acid)

By formula: CHO2- + CH2O2 = (CHO2- bullet CH2O2)

Quantity Value Units Method Reference Comment
Deltar154. ± 4.2kJ/molN/AMeot-Ner and Sieck, 1986gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar164.J/mol*KPHPMSMeot-Ner and Sieck, 1986gas phase; large «DELTA»rH, «DELTA»rS,; cyclic structure? pyrolysis?; M
Quantity Value Units Method Reference Comment
Deltar105. ± 6.7kJ/molTDAsMeot-Ner and Sieck, 1986gas phase; B

(HCO2 anion bullet 4Formic acid) + Formic acid = (HCO2 anion bullet 5Formic acid)

By formula: (CHO2- bullet 4CH2O2) + CH2O2 = (CHO2- bullet 5CH2O2)

Quantity Value Units Method Reference Comment
Deltar42.3 ± 8.4kJ/molN/ALuczynski, Wlodek, et al., 1978gas phase; Buffer gas H2. There may be appreciable fractionation of neutral gases: Williamson, Knighton, et al., 1996; B,M
Quantity Value Units Method Reference Comment
Deltar50.J/mol*KHPMSLuczynski, Wlodek, et al., 1978gas phase; Entropy change is questionable; M

(HCO2 anion bullet 3Formic acid) + Formic acid = (HCO2 anion bullet 4Formic acid)

By formula: (CHO2- bullet 3CH2O2) + CH2O2 = (CHO2- bullet 4CH2O2)

Quantity Value Units Method Reference Comment
Deltar59.4 ± 8.8kJ/molN/ALuczynski, Wlodek, et al., 1978gas phase; Buffer gas H2. There may be appreciable fractionation of neutral gases: Williamson, Knighton, et al., 1996; B,M
Quantity Value Units Method Reference Comment
Deltar90.0J/mol*KHPMSLuczynski, Wlodek, et al., 1978gas phase; M

(HCO2 anion bullet 2Formic acid) + Formic acid = (HCO2 anion bullet 3Formic acid)

By formula: (CHO2- bullet 2CH2O2) + CH2O2 = (CHO2- bullet 3CH2O2)

Quantity Value Units Method Reference Comment
Deltar84. ± 11.kJ/molN/ALuczynski, Wlodek, et al., 1978gas phase; Buffer gas H2. There may be appreciable fractionation of neutral gases: Williamson, Knighton, et al., 1996; B,M
Quantity Value Units Method Reference Comment
Deltar130.J/mol*KHPMSLuczynski, Wlodek, et al., 1978gas phase; M

(HCO2 anion bullet Formic acid) + Formic acid = (HCO2 anion bullet 2Formic acid)

By formula: (CHO2- bullet CH2O2) + CH2O2 = (CHO2- bullet 2CH2O2)

Quantity Value Units Method Reference Comment
Deltar109. ± 13.kJ/molN/ALuczynski, Wlodek, et al., 1978gas phase; Buffer gas H2. There may be appreciable fractionation of neutral gases: Williamson, Knighton, et al., 1996; B,M
Quantity Value Units Method Reference Comment
Deltar140.J/mol*KHPMSLuczynski, Wlodek, et al., 1978gas phase; M

HCO2 anion + Methyl Alcohol = (HCO2 anion bullet Methyl Alcohol)

By formula: CHO2- + CH4O = (CHO2- bullet CH4O)

Quantity Value Units Method Reference Comment
Deltar73.6 ± 4.2kJ/molN/AMeot-Ner and Sieck, 1986gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar98.7J/mol*KPHPMSMeot-Ner and Sieck, 1986gas phase; M
Quantity Value Units Method Reference Comment
Deltar43.9 ± 6.7kJ/molTDAsMeot-Ner and Sieck, 1986gas phase; B

(HCO2 anion bullet 4294967295Carbon dioxide) + Carbon dioxide = HCO2 anion

By formula: (CHO2- bullet 4294967295CO2) + CO2 = CHO2-

Quantity Value Units Method Reference Comment
Deltar216. ± 9.6kJ/molN/ACaldwell, Renneboog, et al., 1989gas phase; B

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.

Kim, Bradforth, et al., 1995
Kim, E.H.; Bradforth, S.E.; Arnold, D.W.; Metz, R.B.; Neumark, D.M., Study of HCO2 and DCO2 by Negative Ion Photoelectron Spectroscopy, J. Chem. Phys., 1995, 103, 18, 7801, https://doi.org/10.1063/1.470196 . [all data]

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]

Muftakhov, Vasil'ev, et al., 1999
Muftakhov, M.V.; Vasil'ev, Y.V.; Mazunov, V.A., Determination of electron affinity of carbonyl radicals by means of negative ion mass spectrometry, Rapid Commun. Mass Spectrom., 1999, 13, 12, 1104-1108, https://doi.org/10.1002/(SICI)1097-0231(19990630)13:12<1104::AID-RCM619>3.0.CO;2-C . [all data]

Meot-Ner and Sieck, 1986
Meot-Ner, M.; Sieck, L.W., The ionic hydrogen bond and ion solvation. 5. OH...O- bonds. Gas phase solvation and clustering of alkoxide and carboxylate anions, J. Am. Chem. Soc., 1986, 108, 7525. [all data]

Viidanoja, Reiner, et al., 2000
Viidanoja, J.; Reiner, T.; Kiendler, A.; Grimm, F.; Arnold, F., Laboratory investigations of negative ion molecule reactions of propionic, butyric, glyoxylic, pyruvic, and pinonic acids, Int. J. Mass Spectrom., 2000, 194, 1, 53-68, https://doi.org/10.1016/S1387-3806(99)00172-4 . [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]

Meot-ner, 1988
Meot-ner, M., Ionic Hydrogen Bond and Ion Solvation. 6. Interaction Energies of the Acetate Ion with Organic Molecules. Comparison of CH3COO- with Cl-, CN-, and SH-, J. Am. Chem. Soc., 1988, 110, 12, 3854, https://doi.org/10.1021/ja00220a022 . [all data]

Meot-ner, Cybulski, et al., 1988
Meot-ner, M.; Cybulski, S.M.; Scheiner, S.; Liebman, J.F., Is CN- Significantly Anisotropic? Comparison of CN- vs. Cl-: Clustering with HCN and Condensed Phase Thermochemistry, J. Phys. Chem., 1988, 92, 10, 2738, https://doi.org/10.1021/j100321a009 . [all data]

Luczynski, Wlodek, et al., 1978
Luczynski, Z.; Wlodek, S.; Wincel, H., Stabilities of HCOO-.(HCOOH)n and Cl-.(HCOOH)n clusters, Int. J. Mass Spectrom. Ion Phys., 1978, 26, 103. [all data]

Williamson, Knighton, et al., 1996
Williamson, D.H.; Knighton, W.B.; Grimsrud, E.P., Pulsed High Pressure Mass Spectrometry with Near-Viscous Flow Ion Sampling, Int. J. Mass Spectrom. Ion Proc., 1996, 154, 1-2, 15, https://doi.org/10.1016/0168-1176(96)04372-8 . [all data]


Notes

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