cyclopentoxide anion
- Formula: C5H9O-
- Molecular weight: 85.1249
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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 by: John E. Bartmess
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Individual Reactions
C5H9O- + =
By formula: C5H9O- + H+ = C5H10O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 383.0 ± 4.6 | kcal/mol | D-EA | Alconcel and Continetti, 2002 | gas phase; derived acidity seems ca. 10 kcal/mol too weak, and EA likewise |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 366.9 ± 1.1 | kcal/mol | N/A | Garver, Yang, et al., 2011 | gas phase |
| ΔrG° | 374.9 ± 4.7 | kcal/mol | H-TS | Alconcel and Continetti, 2002 | gas phase; derived acidity seems ca. 10 kcal/mol too weak, and EA likewise |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, References, Notes
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 |
|---|---|---|---|
| 1.50 ± 0.10 | LPD | Alconcel and Continetti, 2002 | derived acidity seems ca. 10 kcal/mol too weak, and EA likewise |
Protonation reactions
C5H9O- + =
By formula: C5H9O- + H+ = C5H10O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 383.0 ± 4.6 | kcal/mol | D-EA | Alconcel and Continetti, 2002 | gas phase; derived acidity seems ca. 10 kcal/mol too weak, and EA likewise |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 366.9 ± 1.1 | kcal/mol | N/A | Garver, Yang, et al., 2011 | gas phase |
| ΔrG° | 374.9 ± 4.7 | kcal/mol | H-TS | Alconcel and Continetti, 2002 | gas phase; derived acidity seems ca. 10 kcal/mol too weak, and EA likewise |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Alconcel and Continetti, 2002
Alconcel, L.S.; Continetti, R.E.,
Dissociation dynamics and stability of cyclopentoxy and cyclopentoxide,
Chem. Phys. Lett., 2002, 366, 5-6, 642-649, https://doi.org/10.1016/S0009-2614(02)01633-0
. [all data]
Garver, Yang, et al., 2011
Garver, J.M.; Yang, Z.B.; Kato, S.; Wren, S.W.; Vogelhuber, K.M.; Lineberger, W.C.; Bierbaum, V.M.,
Gas Phase Reactions of 1,3,5-Triazine: Proton Transfer, Hydride Transfer, and Anionic sigma-Adduct Formation,
J. Am. Soc. Mass Spectrom., 2011, 22, 7, 1260-1272, https://doi.org/10.1007/s13361-011-0133-9
. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References
- 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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