MeCH(OH)CO2 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

(MeCH(OH)CO2 anion • Water) + Water = (MeCH(OH)CO2 anion • 2Water)

By formula: (C3H5O3- • H2O) + H2O = (C3H5O3- • 2H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr51.5 ± 6.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. ΔSaff approx. 24 cal/mol-K; B
Quantity Value Units Method Reference Comment
Δr22.2 ± 1.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. ΔSaff approx. 24 cal/mol-K; B,M

MeCH(OH)CO2 anion + Water = (MeCH(OH)CO2 anion • Water)

By formula: C3H5O3- + H2O = (C3H5O3- • H2O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Δr61.5 ± 6.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. ΔSaff approx. 24 cal/mol-K; B
Quantity Value Units Method Reference Comment
Δr32.2 ± 1.3kJ/molTDAsBlades, Klassen, et al., 1995gas phase; T: 293 K. ΔSaff approx. 24 cal/mol-K; B,M

MeCH(OH)CO2 anion + Hydrogen cation = dl-lactic acid

By formula: C3H5O3- + H+ = C3H6O3

Quantity Value Units Method Reference Comment
Δr1413. ± 9.2kJ/molG+TSCaldwell, Renneboog, et al., 1989gas phase; May have large entropy correction from cyclization; see HOCH2CO2-; B
Quantity Value Units Method Reference Comment
Δr1383. ± 8.4kJ/molIMRECaldwell, Renneboog, et al., 1989gas phase; May have large entropy correction from cyclization; see HOCH2CO2-; B

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.

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]

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]


Notes

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