H2O..H anion
- Formula: H3O-
- Molecular weight: 19.0238
- Information on this page:
- Options:
Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics 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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -40.3 ± 4.1 | kcal/mol | Endo | Paulson and Henchman, 1984 | HOH..HO- + H2 ->. See also Griffiths and Harris, 1989 |
| ΔfH°gas | -48. ± 12. | kcal/mol | IMRB | Kleingeld and Nibbering, 1983 | H- + HCO2H ->. |
Gas phase ion energetics data
Go To: Top, Gas phase 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 |
|---|---|---|---|
| 1.530 ± 0.020 | LPES | Miller, Leopold, et al., 1985 | EA given is Vertical Detachment Energy. Est. Adiabatic: 1.40 eV, 32.3 kcal/mol |
References
Go To: Top, Gas phase 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.
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
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.