HC(CO2Et)2 anion
- Formula: C7H11O4-
- Molecular weight: 159.1604
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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 |
|---|---|---|---|
| 2.61 ± 0.19 | D-EA | Cumming and Kebarle, 1978 |
Protonation reactions
C7H11O4- + =
By formula: C7H11O4- + H+ = C7H12O4
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 348.3 ± 2.3 | kcal/mol | G+TS | Cumming and Kebarle, 1978 | gas phase |
| ΔrH° | 344.7 ± 1.2 | kcal/mol | EIAE | Muftakhov, Vasil'ev, et al., 1999 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 342.3 ± 2.0 | kcal/mol | IMRE | Cumming and Kebarle, 1978 | gas 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.
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]
Notes
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- Symbols used in this document:
EAneutral Electron affinity of neutral species ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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