NH3+
- Formula: H3N+
- Molecular weight: 17.0300
- CAS Registry Number: 19496-55-0
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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: Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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Individual Reactions
(H3N+ • ) +
= (H3N+ • 2
)
By formula: (H3N+ • H3N) + H3N = (H3N+ • 2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 40. ± 20. | kJ/mol | EI | Breen, Tzeng, et al., 1989 | gas phase |
| ΔrH° | 38. ± 19. | kJ/mol | EI | Stephan, Futrell, et al., 1982 | gas phase |
H3N+ + = (H3N+ •
)
By formula: H3N+ + H3N = (H3N+ • H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 97. ± 19. | kJ/mol | EI | Stephan, Futrell, et al., 1982 | gas phase |
| ΔrH° | 75.7 | kJ/mol | PI | Ng, Trevor, et al., 1977 | gas phase |
References
Go To: Top, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Breen, Tzeng, et al., 1989
Breen, J.J.; Tzeng, W.B.; Kilgore, K.; Keesee, R.G.; Castleman, A.W.,
Intracluster Reactions in Phenylacetylene - Ammonia Clusters Initiated through Resonant Enhanced Ionization,
J. Phys. Chem., 1989, 90, 1, 19, https://doi.org/10.1063/1.456521
. [all data]
Stephan, Futrell, et al., 1982
Stephan, K.; Futrell, J.H.; Peterson, K.I.; Castleman, A.W.; Wagner, H.E.; Djuric, N.; Mark, T.D.,
An Electron - Impact Study of Ammonia Clusters in a Supersonic Molecular Beam: Appearence Potentials of NH4+, (NH3)2H+, (NH3)3+, (NH3)3H+ and (NH2 NH3)+,
Int. J. Mass Spectrom. Ion Phys., 1982, 44, 3-4, 167, https://doi.org/10.1016/0020-7381(82)80023-5
. [all data]
Ng, Trevor, et al., 1977
Ng, C.Y.; Trevor, D.J.; Tiedemann, P.W.; Ceyer, S.T.; Kronebush, B.H.; Mahan, B.H.; Lee, Y.T.,
Photoinization of Dimeric Polyatomic Molecules: Proton Affinities of H2O and HF,
J. Chem. Phys., 1977, 67, 9, 4235, https://doi.org/10.1063/1.435404
. [all data]
Notes
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- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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