HCðCCðCCðCCðC anion
- Formula: C8H-
- Molecular weight: 97.0941
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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
C8H- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1485. ± 21. | kJ/mol | D-EA | Garand, Yacovitch, et al., 2010 | gas phase; Calns says linear H-terminated structure for anion |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1451. ± 21. | kJ/mol | H-TS | Garand, Yacovitch, et al., 2010 | gas phase; Calns says linear H-terminated structure for anion |
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 |
|---|---|---|---|
| 3.9701 ± 0.0010 | N/A | Garand, Yacovitch, et al., 2010 | Calns says linear H-terminated structure for anion |
| 3.956 ± 0.010 | LPD | Pino, Tulej, et al., 2002 | |
| 3.966 ± 0.010 | LPES | Taylor, Xu, et al., 1998 |
Protonation reactions
C8H- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1485. ± 21. | kJ/mol | D-EA | Garand, Yacovitch, et al., 2010 | gas phase; Calns says linear H-terminated structure for anion |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1451. ± 21. | kJ/mol | H-TS | Garand, Yacovitch, et al., 2010 | gas phase; Calns says linear H-terminated structure for anion |
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.
Garand, Yacovitch, et al., 2010
Garand, E.; Yacovitch, T.I.; Zhou, J.; Sheehan, S.M.; Neumark, D.M.,
Slow photoelectron velocity-map imaging of the CnH- (n=5-9) anions,
Chem. Sci., 2010, 1, 2, 192-201, https://doi.org/10.1039/c0sc00164c
. [all data]
Pino, Tulej, et al., 2002
Pino, T.; Tulej, M.; Guthe, F.; Pachkov, M.; Maier, J.P.,
Photodetachment spectroscopy of the C2nH- (n=2-4) anions in the vicinity of their electron detachment threshold,
J. Chem. Phys., 2002, 116, 14, 6126-6131, https://doi.org/10.1063/1.1451248
. [all data]
Taylor, Xu, et al., 1998
Taylor, T.R.; Xu, C.S.; Neumark, D.M.,
Photoelectron spectra of the C2nH- (n=1-4) and C2nD- (n=1-3) anions,
J. Chem. Phys., 1998, 108, 24, 10018-10026, https://doi.org/10.1063/1.476462
. [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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