H2O..H anion
- Formula: H3O-
- Molecular weight: 19.0238
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Gas phase 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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -169. ± 17. | kJ/mol | Endo | Paulson and Henchman, 1984 | HOH..HO- + H2 ->. See also Griffiths and Harris, 1989 |
| ΔfH°gas | -200. ± 50. | kJ/mol | IMRB | Kleingeld and Nibbering, 1983 | H- + HCO2H ->. |
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 |
|---|---|---|---|
| 1.530 ± 0.020 | LPES | Miller, Leopold, et al., 1985 | EA given is Vertical Detachment Energy. Est. Adiabatic: 1.40 eV, 32.3 kcal/mol |
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.
Paulson and Henchman, 1984
Paulson, J.F.; Henchman, M.J.,
On the Formation of H3O- in an Ion-Molecule Reaction
in Ionic Processes in the Gas Phase,, M.A. Almoster Ferreira, Ed., Reidel, Dordrecht,, 1984, 331. [all data]
Griffiths and Harris, 1989
Griffiths, W.J.; Harris, F.M.,
Amended Interpretation of the Results Obtained in an Experimental Investigation of the Structure of the H3O- Ion,
Int. J. Mass Spectrom. Ion Proc., 1989, 87, 1, R25, https://doi.org/10.1016/0168-1176(89)80017-5
. [all data]
Kleingeld and Nibbering, 1983
Kleingeld, J.C.; Nibbering, N.M.M.,
The long-lived H3O- ion in the gas phase: Its formation, structure, and reactions,
Int. J. Mass Spectrom. Ion Phys., 1983, 49, 311. [all data]
Miller, Leopold, et al., 1985
Miller, T.M.; Leopold, D.G.; Murray, K.K.; Lineberger, W.C.,
The Photoelectron Spectrum of H3O-,
Bull. Am. Phys. Soc., 1985, 30, 880. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
EAneutral Electron affinity of neutral species ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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