Hydrogen azide
- Formula: HN3
- Molecular weight: 43.0280
- IUPAC Standard InChIKey: JUINSXZKUKVTMD-UHFFFAOYSA-N
- CAS Registry Number: 7782-79-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Hydrazoic acid; Azoimide; Diazoimide; Hydronitric acid; Triazoic acid; HN3; Stickstoffwasserstoffsaeure
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Reaction thermochemistry data
Go To: Top, Mass spectrum (electron ionization), Gas Chromatography, 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:
B - John E. Bartmess
MS - José A. Martinho Simões
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 341.50 ± 0.71 | kcal/mol | D-EA | Yang, Kiran, et al., 2004 | gas phase; B |
ΔrH° | 344.0 ± 3.0 | kcal/mol | G+TS | Pellerite, Jackson, et al., 1981 | gas phase; Acidity near HCO2H; B |
ΔrH° | 339.0 ± 5.0 | kcal/mol | Acid | Franklin, Dibeler, et al., 1958 | gas phase; From MeN3 and HN3; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 335.54 ± 0.81 | kcal/mol | H-TS | Yang, Kiran, et al., 2004 | gas phase; B |
ΔrG° | 338.0 ± 2.9 | kcal/mol | IMRB | Pellerite, Jackson, et al., 1981 | gas phase; Acidity near HCO2H; B |
C10H10N6Ti (cr) + 2( • 4.18
) (solution) =
(cr) + 2
(g)
By formula: C10H10N6Ti (cr) + 2(HCl • 4.18H2O) (solution) = C10H10Cl2Ti (cr) + 2HN3 (g)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 18.1 ± 1.4 | kcal/mol | RSC | Calhorda, Gomes da Costa, et al., 1982 | Please also see Dias, Dias, et al., 1987.; MS |
Mass spectrum (electron ionization)
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
NIST MS number | 60 |
Gas Chromatography
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Van Den Dool and Kratz RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-Wax | 1213. | Shimoda, Peralta, et al., 1996 | 60. m/0.25 mm/0.25 μm, He, 3. K/min; Tstart: 50. C; Tend: 230. C |
References
Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Yang, Kiran, et al., 2004
Yang, X.; Kiran, B.; Wang, X.B.; Wang, L.S.; Mucha, M.; Jungwirth, P.,
Solvation of the azide anion (N-3(-)) in water clusters and aqueous interfaces: A combined investigation by photoelectron spectroscopy, density functional calculations, and molecular dynamic,
J. Phys. Chem. A, 2004, 108, 39, 7820-7826, https://doi.org/10.1021/jp0496396
. [all data]
Pellerite, Jackson, et al., 1981
Pellerite, M.J.; Jackson, R.L.; Brauman, J.I.,
Proton affinity of the gaseous azide Ion. The N-H bond dissociation enegry in HN3,
J. Phys. Chem., 1981, 85, 1624. [all data]
Franklin, Dibeler, et al., 1958
Franklin, J.L.; Dibeler, V.H.; Reese, R.M.; Krauss, M.,
Ionization and dissociation of hydrazoic acid and methyl azide by electron impact,
J. Am. Chem. Soc., 1958, 80, 298. [all data]
Calhorda, Gomes da Costa, et al., 1982
Calhorda, M.J.; Gomes da Costa, R.; Dias, A.R.; Martinho Simões, J.A.,
J. Chem. Soc., Dalton Trans., 1982, 2327.. [all data]
Dias, Dias, et al., 1987
Dias, A.R.; Dias, P.B.; Diogo, H.P.; Galvão, A.M.; Minas da Piedade, M.E.; Martinho Simões, J.A.,
Organometallics, 1987, 6, 1427. [all data]
Shimoda, Peralta, et al., 1996
Shimoda, M.; Peralta, R.R.; Osajima, Y.,
Headspace gas analysis of fish sauce,
J. Agric. Food Chem., 1996, 44, 11, 3601-3605, https://doi.org/10.1021/jf960345u
. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
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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