nPrCO2 anion


Gas phase ion energetics 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

Electron affinity of neutral species

EAneutral (eV) Method Reference Comment
3.47 ± 0.16D-EACaldwell, Renneboog, et al., 1989 
3.40 ± 0.30LPESDing, Wang, et al., 1998Around 3.4 eV" for CH3(CH2)nCO2-, n=0-8, Dervived DH = 113.4±8 kcal/mol

Protonation reactions

C4H7O2- + Hydrogen cation = Butanoic acid

By formula: C4H7O2- + H+ = C4H8O2

Quantity Value Units Method Reference Comment
Δr346.8 ± 2.0kcal/molTDEqNorrman and McMahon, 1999gas phase
Δr346.5 ± 2.2kcal/molG+TSCaldwell, Renneboog, et al., 1989gas phase
Δr346.5 ± 2.2kcal/molG+TSCumming and Kebarle, 1978gas phase
Quantity Value Units Method Reference Comment
Δr339.5 ± 2.0kcal/molIMRECaldwell, Renneboog, et al., 1989gas phase
Δr339.5 ± 2.0kcal/molIMRECumming and Kebarle, 1978gas phase

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]

Ding, Wang, et al., 1998
Ding, C.F.; Wang, X.B.; Wang, L.S., Photoelectron spectroscopy of doubly charged anions: Intramolecular Coulomb repulsion and solvent stabilization, J. Phys. Chem. A, 1998, 102, 45, 8633-8636, https://doi.org/10.1021/jp982698x . [all data]

Norrman and McMahon, 1999
Norrman, K.; McMahon, T.B., Intramolecular solvation of carboxylate anions in the gas phase, J. Phys. Chem. A, 1999, 103, 35, 7008-7016, https://doi.org/10.1021/jp9908202 . [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]


Notes

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