Nitrogen
- Formula: N2
- Molecular weight: 28.0134
- IUPAC Standard InChIKey: IJGRMHOSHXDMSA-UHFFFAOYSA-N
- CAS Registry Number: 7727-37-9
- 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: Nitrogen gas; N2; UN 1066; UN 1977; Dinitrogen; Molecular nitrogen; Diatomic nitrogen; Nitrogen-14
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Phase change data
- Reaction thermochemistry data: reactions 51 to 100, reactions 101 to 150, reactions 151 to 156
- Henry's Law data
- Ion clustering data
- Constants of diatomic molecules
- Fluid Properties
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Gas phase thermochemistry data
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°gas,1 bar | 191.609 ± 0.004 | J/mol*K | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
S°gas,1 bar | 191.61 | J/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1977 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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Temperature (K) | 100. to 500. | 500. to 2000. | 2000. to 6000. |
---|---|---|---|
A | 28.98641 | 19.50583 | 35.51872 |
B | 1.853978 | 19.88705 | 1.128728 |
C | -9.647459 | -8.598535 | -0.196103 |
D | 16.63537 | 1.369784 | 0.014662 |
E | 0.000117 | 0.527601 | -4.553760 |
F | -8.671914 | -4.935202 | -18.97091 |
G | 226.4168 | 212.3900 | 224.9810 |
H | 0.0 | 0.0 | 0.0 |
Reference | Chase, 1998 | Chase, 1998 | Chase, 1998 |
Comment | Data last reviewed in March, 1977; New parameter fit January 2009 | Data last reviewed in March, 1977; New parameter fit January 2009 | Data last reviewed in March, 1977; New parameter fit January 2009 |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), 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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
MS - José A. Martinho Simões
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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.
Reactions 1 to 50
By formula: NO- + N2 = (NO- • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19. ± 1. | kJ/mol | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
ΔrH° | 20. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase; ΔrS+-12. J/mol*K; M |
ΔrH° | 18. | kJ/mol | HPMS | Speller, Fitaire, et al., 1983 | gas phase; Entropy change is questionable; M |
ΔrH° | 22. | kJ/mol | HPMS | Turner and Conway, 1976 | gas phase; M |
ΔrH° | 19. | kJ/mol | DT | Johnsen, Huang, et al., 1975 | gas phase; corrected for ln T by Keesee and Castleman, 1986; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 71.1 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
ΔrS° | 57.7 | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase; ΔrS+-12. J/mol*K; M |
ΔrS° | 55.6 | J/mol*K | HPMS | Speller, Fitaire, et al., 1983 | gas phase; Entropy change is questionable; M |
ΔrS° | 79.1 | J/mol*K | HPMS | Turner and Conway, 1976 | gas phase; M |
ΔrS° | 65.7 | J/mol*K | DT | Johnsen, Huang, et al., 1975 | gas phase; corrected for ln T by Keesee and Castleman, 1986; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
2. | 200. | FA | Dunkin, Fehsenfeld, et al., 1971 | gas phase; M |
By formula: N2+ + N2 = (N2+ • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 102. to 102. | kJ/mol | RNG | N/A | Range of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 87.9 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrS° | 67.8 | J/mol*K | PHPMS | Teng and Conway, 1973 | gas phase; M |
ΔrS° | 81.6 | J/mol*K | PHPMS | Payzant and Kebarle, 1970 | gas phase; M |
ΔrS° | 46. | J/mol*K | DT | Varney, 1968 | gas phase; Entropy change is questionable; M |
ΔrS° | -4. | J/mol*K | DT | Varney, 1959 | gas phase; Entropy change is questionable; M |
By formula: O2+ + N2 = (O2+ • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 21. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrH° | 22. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; M |
ΔrH° | 24. | kJ/mol | PHPMS | Janik and Conway, 1967 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrS° | 66.1 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; M |
ΔrS° | 79.1 | J/mol*K | PHPMS | Janik and Conway, 1967 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
0.0 | 296. | FA | Howard, Bierbaum, et al., 1972 | gas phase; M |
By formula: (HN2+ • 4N2) + N2 = (HN2+ • 5N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 12. ± 1. | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrH° | 13. | kJ/mol | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 95.8 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrS° | 84. | J/mol*K | N/A | Hiraoka, Saluja, et al., 1979 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
5.9 | 92. | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; Entropy change calculated or estimated; M |
By formula: (O2- • 7N2 • O2) + N2 = (O2- • 8N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
ΔrH° | 6.40 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 74.9 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
ΔrS° | 75.3 | J/mol*K | N/A | Hiraoka, 1988 | gas phase; Entropy change calculated or estimated; M |
By formula: (O2+ • 2N2) + N2 = (O2+ • 3N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 18. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrH° | 15. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 82.0 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrS° | 50.6 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
By formula: (O2+ • N2) + N2 = (O2+ • 2N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrH° | 18. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 79.9 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrS° | 57.7 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
By formula: (NO- • N2) + N2 = (NO- • 2N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 17. ± 1. | kJ/mol | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
ΔrH° | 16. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.8 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
ΔrS° | 52.7 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
C3N2NiO3 (solution) = C3NiO3 (solution) + (solution)
By formula: C3N2NiO3 (solution) = C3NiO3 (solution) + N2 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 42. ± 4. | kJ/mol | KinS | Turner, Simpson, et al., 1983 | solvent: Liquid krypton; The reaction enthalpy relies on the experimental value for the activation enthalpy, 42. ± 4. kJ/mol, and on the assumption that the activation enthalpy for product recombination is negligible Turner, Simpson, et al., 1983.; MS |
By formula: N+ + N2 = (N+ • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 249. | kJ/mol | N/A | National Bureau of Standards, 1968 | gas phase; from ΔrH(f); M |
ΔrH° | 250. | kJ/mol | EI | Saporoschenko, 1965 | gas phase; M |
ΔrH° | 250. | kJ/mol | EI | Franklin, Dibeler, et al., 1958 | gas phase; M |
Enthalpy of reaction
ΔrH° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
361. (+7.5,-0.) | CID | Haynes, Freysinger, et al., 1995 | gas phase; guided ion beam CID; M |
By formula: Cu+ + N2 = (Cu+ • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 26. | kJ/mol | HPMS | El-Shall, Schriver, et al., 1989 | gas phase; Cu+ from laser desrption; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 67. | J/mol*K | HPMS | El-Shall, Schriver, et al., 1989 | gas phase; Cu+ from laser desrption; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 5.9 | kJ/mol | HPMS | El-Shall, Schriver, et al., 1989 | gas phase; Cu+ from laser desrption; M |
By formula: (HN2+ • 2N2) + N2 = (HN2+ • 3N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 14. ± 1. | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrH° | 16. | kJ/mol | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84.1 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrS° | 84. | J/mol*K | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
By formula: (HN2+ • 3N2) + N2 = (HN2+ • 4N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 14. ± 1. | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrH° | 15. | kJ/mol | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 88.7 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrS° | 84. | J/mol*K | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
By formula: (HN2+ • N2) + N2 = (HN2+ • 2N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 15. ± 1. | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrH° | 17. | kJ/mol | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 80.3 | J/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrS° | 75. | J/mol*K | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
By formula: Na+ + N2 = (Na+ • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 33. | kJ/mol | FA | Perry, Rowe, et al., 1980 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 77.8 | J/mol*K | FA | Perry, Rowe, et al., 1980 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
9.2 | 310. | FA | Perry, Rowe, et al., 1980 | gas phase; M |
8.4 | 310. | DT | Beyer and Keller, 1971 | gas phase; low E/N; M |
By formula: HN2+ + N2 = (HN2+ • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 66.9 | kJ/mol | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
ΔrH° | 60.7 | kJ/mol | PHPMS | Meot-Ner (Mautner) and Field, 1974 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
ΔrS° | 85.4 | J/mol*K | PHPMS | Meot-Ner (Mautner) and Field, 1974 | gas phase; M |
C39H66N2O3P2W (solution) + (g) = C39H68O3P2W (solution) +
(g)
By formula: C39H66N2O3P2W (solution) + H2 (g) = C39H68O3P2W (solution) + N2 (g)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 18.4 ± 1.7 | kJ/mol | EqS | Gonzalez and Hoff, 1989 | solvent: Tetrahydrofuran; Temperature range: 288-308 K; MS |
C39H66MoO3P3 (solution) + (g) = C39H66MoN2O3P2 (solution)
By formula: C39H66MoO3P3 (solution) + N2 (g) = C39H66MoN2O3P2 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -37.7 ± 2.5 | kJ/mol | EqS | Gonzalez and Hoff, 1989 | solvent: Tetrahydrofuran; Temperature range: 294-308 K; MS |
By formula: (H3O+ • 2N2 • 3H2O) + N2 = (H3O+ • 3N2 • 3H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.0 | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase; ΔrH, ΔrS approximate; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 27. | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase; ΔrH, ΔrS approximate; M |
By formula: (O2+ • 4N2) + N2 = (O2+ • 5N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 67.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
3. | 184. | HPMS | Speller and Fitaire, 1983 | gas phase; M |
By formula: (NO- • 2N2) + N2 = (NO- • 3N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 16. ± 1. | kJ/mol | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 70.3 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
4. | 204. | HPMS | Speller, Fitaire, et al., 1983 | gas phase; M |
By formula: (NO- • 3N2) + N2 = (NO- • 4N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 14. ± 1. | kJ/mol | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 74.9 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
2. | 204. | HPMS | Speller, Fitaire, et al., 1983 | gas phase; M |
By formula: (O2+ • 3N2) + N2 = (O2+ • 4N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 17. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 94.1 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
3. | 204. | HPMS | Speller and Fitaire, 1983 | gas phase; M |
By formula: (H3O+ • 3N2 • 2H2O) + N2 = (H3O+ • 4N2 • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 10. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase; ΔrH, ΔrS approximate; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 50. | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase; ΔrH, ΔrS approximate; M |
By formula: (NO- • 9N2) + N2 = (NO- • 10N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.03 | kJ/mol | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 79. | J/mol*K | N/A | Hiraoka and Yamabe, 1989 | gas phase; Entropy change calculated or estimated; M |
By formula: (HN2+ • 10N2) + N2 = (HN2+ • 11N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.20 | kJ/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92. | J/mol*K | N/A | Hiraoka and Mori, 1989 | gas phase; Entropy change calculated or estimated; M |
By formula: O3- + N2 = (O3- • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.3 ± 0.84 | kJ/mol | TDAs | Hiraoka, 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 77.0 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -11.7 ± 2.1 | kJ/mol | TDAs | Hiraoka, 1988 | gas phase; B |
By formula: (C2H5+ • N2) + N2 = (C2H5+ • 2N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19. | kJ/mol | HPMS | Speller, 1983 | gas phase; deuterated, Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 45.6 | J/mol*K | HPMS | Speller, 1983 | gas phase; deuterated, Entropy change is questionable; M |
By formula: (N2+ • N2) + N2 = (N2+ • 2N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrH° | 5.9 | kJ/mol | PI | Linn, Ono, et al., 1981 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 62.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
By formula: (O2+ • O2) + N2 = (O2+ • N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 12. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 42.3 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
By formula: (Na+ • N2) + N2 = (Na+ • 2N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 22. | kJ/mol | FA | Perry, Rowe, et al., 1980 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 70.3 | J/mol*K | FA | Perry, Rowe, et al., 1980 | gas phase; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
-1. | 310. | FA | Perry, Rowe, et al., 1980 | gas phase; M |
By formula: (CH2N+ • 2N2) + N2 = (CH2N+ • 3N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 13. | kJ/mol | HPMS | Speller, Fitaire, et al., 1982 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 54.8 | J/mol*K | HPMS | Speller, Fitaire, et al., 1982 | gas phase; Entropy change is questionable; M |
By formula: (CH2N+ • 3N2) + N2 = (CH2N+ • 4N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 13. | kJ/mol | HPMS | Speller, Fitaire, et al., 1982 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 57.7 | J/mol*K | HPMS | Speller, Fitaire, et al., 1982 | gas phase; Entropy change is questionable; M |
By formula: (CH2N+ • 4N2) + N2 = (CH2N+ • 5N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 13. | kJ/mol | HPMS | Speller, Fitaire, et al., 1982 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 63.6 | J/mol*K | HPMS | Speller, Fitaire, et al., 1982 | gas phase; Entropy change is questionable; M |
By formula: C4H4BrNO2 + 0.5H4N2 = HBr + C4H5NO2 + 0.5N2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -260.3 ± 0.46 | kJ/mol | Cm | Howard and Skinner, 1966 | solid phase; solvent: Aqueous solution; Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -261.7 ± 0.46 kJ/mol; ALS |
By formula: O2- + N2 = (O2- • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 25. ± 4.2 | kJ/mol | N/A | Posey and Johnson, 1988 | gas phase; B |
ΔrH° | <56.90 | kJ/mol | IMRB | Adams and Bohme, 1970 | gas phase; N2..O2- + O2 -> O4-; B |
C12H34P4Ru (solution) + (solution) = C12H32N2P4Ru (solution) +
(solution)
By formula: C12H34P4Ru (solution) + N2 (solution) = C12H32N2P4Ru (solution) + H2 (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 16.3 | kJ/mol | PAC | Belt, Scaiano, et al., 1993 | solvent: Cyclohexane; The reaction enthalpy relies on 0.85 for the quantum yield of H2 dissociation.; MS |
By formula: (H3O+ • 2N2 • 2H2O) + N2 = (H3O+ • 3N2 • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 38. ± 11. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 119. | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase; M |
(solution) +
(solution) = C8H5N2O3V (solution) +
(solution)
By formula: C9H5O4V (solution) + N2 (solution) = C8H5N2O3V (solution) + CO (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 27. ± 4. | kJ/mol | PAC | Johnson, Popov, et al., 1991 | solvent: Heptane; The reaction enthalpy relies on 0.80 for the quantum yield of CO dissociation.; MS |
By formula: (O2- • 2N2 • O2) + N2 = (O2- • 3N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 10.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 76.6 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • 3N2 • O2) + N2 = (O2- • 4N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 78.2 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • 4N2 • O2) + N2 = (O2- • 5N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.1 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 81.6 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • 5N2 • O2) + N2 = (O2- • 6N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.6 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 81.6 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • 6N2 • O2) + N2 = (O2- • 7N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.1 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 78.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • N2 • O2) + N2 = (O2- • 2N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.7 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 74.9 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (H3O+ • 2N2 • H2O) + N2 = (H3O+ • 3N2 • H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 33. ± 8. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92. | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase; M |
By formula: (H3O+ • N2 • 2H2O) + N2 = (H3O+ • 2N2 • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 22. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 69.5 | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase; M |
By formula: (H3O+ • N2 • 3H2O) + N2 = (H3O+ • 2N2 • 3H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 18. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 65.7 | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase; M |
By formula: (O2+ • 10N2) + N2 = (O2+ • 11N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84.5 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
By formula: (N2+ • 10N2) + N2 = (N2+ • 11N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.9 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84.5 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Mass spectrum (electron ionization), References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to N2+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 15.581 ± 0.008 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 493.8 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 464.5 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
15.581 ± 0.008 | S | Trickl, Cromwell, et al., 1989 | LL |
15.7 ± 0.1 | EI | Stephen, Mark, et al., 1984 | LBLHLM |
15.6 ± 0.1 | EI | Grade, Wienecke, et al., 1983 | LBLHLM |
15.60 | PE | Kimura, Katsumata, et al., 1981 | LLK |
10.1 ± 0.6 | EI | Armentrout, Tarr, et al., 1981 | LLK |
15.58 | EI | Armentrout, Tarr, et al., 1981 | LLK |
15.5808 | EVAL | Huber and Herzberg, 1979 | LLK |
15.58 ± 0.02 | EI | Sahini, Constantin, et al., 1978 | LLK |
15.5 | PI | Rabalais, Debies, et al., 1974 | LLK |
15.58 | PE | Lee and Rabalais, 1974 | LLK |
15.61 | PE | Natalis, 1973 | LLK |
15.58 ± 0.01 | PE | Hotop and Niehaus, 1970 | RDSH |
15.56 | CI | Cermak, 1968 | RDSH |
15.58 | PI | Cook and Metzger, 1964 | RDSH |
15.5803 | S | Ogawa and Tanaka, 1962 | RDSH |
15.5802 | S | Worley, 1943 | RDSH |
15.5812 ± 0.0002 | S | Worley and Jenkins, 1938 | RDSH |
15.58 | PE | Potts and Williams, 1974 | Vertical value; LLK |
15.60 | PE | Katrib, Debies, et al., 1973 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
N+ | 24.34 | N(4So) | EI | Locht, Schopman, et al., 1975 | LLK |
N+ | 24.3 | N | EI | Smyth, Schiavone, et al., 1973 | LLK |
N+ | 24.4 ± 0.25 | N | EI | Crowe and McConkey, 1973 | LLK |
N+ | 24.32 ± 0.03 | N | EI | Hierl and Franklin, 1967 | RDSH |
N+ | 48. ± 2. | N+ | EI | Hierl and Franklin, 1967 | RDSH |
N+ | 24.32 ± 0.02 | N | EI | Frost and McDowell, 1956 | RDSH |
Mass spectrum (electron ionization)
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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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. |
---|---|
Origin | D.HENNEBERG, MAX-PLANCK INSTITUTE, MULHEIM, WEST GERMANY |
NIST MS number | 61309 |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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Dissociative ionization by electron impact II. N+ N++ from N2,
J. Phys. B:, 1973, 6, 2108. [all data]
Hierl and Franklin, 1967
Hierl, P.M.; Franklin, J.L.,
Appearance potentials and kinetic energies of ions from N2, CO, and NO,
J. Chem. Phys., 1967, 47, 3154. [all data]
Frost and McDowell, 1956
Frost, D.C.; McDowell, C.A.,
The dissociation energy of the nitrogen molecule,
Proc. Roy. Soc. (London), 1956, A236, 278. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy S°gas,1 bar Entropy of gas at standard conditions (1 bar) T Temperature ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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