Imidogen
- Formula: HN
- Molecular weight: 15.0146
- IUPAC Standard InChI: InChI=1S/HN/h1H
- IUPAC Standard InChIKey: PDCKRJPYJMCOFO-UHFFFAOYSA-N
- CAS Registry Number: 13774-92-0
- Chemical structure:
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Gas phase ion energetics data
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
View reactions leading to HN+ (ion structure unspecified)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°(+) ion | 395.2 | kcal/mol | N/A | N/A | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH(+) ion,0K | 396.4 | kcal/mol | N/A | N/A |
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 0.3700 ± 0.0040 | LPES | Neumark, Lykke, et al., 1985 | B |
| 0.381 ± 0.014 | LPES | Engleking and Lineberger, 1976 | Neutral singlet 36.6±0.4 kcal/mol above triplet. See also Neumark, Lykke, et al., 1985, 2; B |
| 0.380 ± 0.030 | LPES | Celotta, Bennett, et al., 1974 | B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 12.8 | EI | Melton, 1966 | RDSH |
| 13.1 ± 0.2 | EI | Foner and Hudson, 1966 | RDSH |
| 13.10 ± 0.05 | EI | Reed and Snedden, 1959 | RDSH |
| 13.49 ± 0.01 | PE | Dunlavey, Dyke, et al., 1980 | Vertical value; LLK |
References
Go To: Top, 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.
Neumark, Lykke, et al., 1985
Neumark, D.M.; Lykke, K.R.; Anderson, T.; Lineberger, W.C.,
Infrared Spectrum and Autodetachment Dynamics of NH-,
J. Chem. Phys., 1985, 83, 9, 4364, https://doi.org/10.1063/1.449052
. [all data]
Engleking and Lineberger, 1976
Engleking, P.C.; Lineberger, W.C.,
Laser photoelectron spectrometry of NH-: Electron affinity and intercombination energy difference in NH,
J. Chem. Phys., 1976, 65, 4323. [all data]
Neumark, Lykke, et al., 1985, 2
Neumark, D.M.; Lykke, K.R.; Andersen, T.; Lineberger, W.C.,
Laser photodetachment measurement of the electron affinity of atomic oxygen,
Phys. Rev. A:, 1985, 32, 1890. [all data]
Celotta, Bennett, et al., 1974
Celotta, R.S.; Bennett, R.A.; Hall, J.L.,
Laser Photodetachment Determination of the Electron Affinities of OH, NH2, NH, SO2, and S2,
J. Chem. Phys., 1974, 60, 5, 1740, https://doi.org/10.1063/1.1681268
. [all data]
Melton, 1966
Melton, C.E.,
Study by mass spectrometry of the decomposition of ammonia by ionizing radiation in a wide-range radiolysis source,
J. Chem. Phys., 1966, 45, 4414. [all data]
Foner and Hudson, 1966
Foner, S.N.; Hudson, R.L.,
Mass spectrometry of free radicals and vibronically excited molecules produced by pulsed electrical discharges,
J. Chem. Phys., 1966, 45, 40. [all data]
Reed and Snedden, 1959
Reed, R.I.; Snedden, W.,
The ionisation potential of NH,
J. Chem. Soc., 1959, 4132. [all data]
Dunlavey, Dyke, et al., 1980
Dunlavey, S.J.; Dyke, J.M.; Jonathan, N.; Morris, A.,
Vacuum ultraviolet photoelectron spectroscopy of transient species. Part 11. The NH2(X(2)B1) radical,
Mol. Phys., 1980, 39, 1121. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
EA Electron affinity ΔfH(+) ion,0K Enthalpy of formation of positive ion at 0K - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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