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
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Reaction thermochemistry 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:
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° | 4.6 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
ΔrH° | 4.7 | kcal/mol | DT | Gheno and Fitaire, 1987 | gas phase; ΔrS+-2.9 cal/mol*K; M |
ΔrH° | 4.4 | kcal/mol | HPMS | Speller, Fitaire, et al., 1983 | gas phase; Entropy change is questionable; M |
ΔrH° | 5.2 | kcal/mol | HPMS | Turner and Conway, 1976 | gas phase; M |
ΔrH° | 4.5 | kcal/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° | 17.0 | cal/mol*K | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
ΔrS° | 13.8 | cal/mol*K | DT | Gheno and Fitaire, 1987 | gas phase; ΔrS+-2.9 cal/mol*K; M |
ΔrS° | 13.3 | cal/mol*K | HPMS | Speller, Fitaire, et al., 1983 | gas phase; Entropy change is questionable; M |
ΔrS° | 18.9 | cal/mol*K | HPMS | Turner and Conway, 1976 | gas phase; M |
ΔrS° | 15.7 | cal/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° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
0.5 | 200. | FA | Dunkin, Fehsenfeld, et al., 1971 | gas phase; M |
By formula: N2+ + N2 = (N2+ • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 24.4 to 24.4 | kcal/mol | RNG | N/A | Range of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 21.0 | cal/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrS° | 16.2 | cal/mol*K | PHPMS | Teng and Conway, 1973 | gas phase; M |
ΔrS° | 19.5 | cal/mol*K | PHPMS | Payzant and Kebarle, 1970 | gas phase; M |
ΔrS° | 11. | cal/mol*K | DT | Varney, 1968 | gas phase; Entropy change is questionable; M |
ΔrS° | -1. | cal/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° | 5.0 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrH° | 5.2 | kcal/mol | HPMS | Speller and Fitaire, 1983 | gas phase; M |
ΔrH° | 5.7 | kcal/mol | PHPMS | Janik and Conway, 1967 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 17.4 | cal/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrS° | 15.8 | cal/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; M |
ΔrS° | 18.9 | cal/mol*K | PHPMS | Janik and Conway, 1967 | gas phase; M |
Free energy of reaction
ΔrG° (kcal/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° | 3.0 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrH° | 3.2 | kcal/mol | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 22.9 | cal/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrS° | 20. | cal/mol*K | N/A | Hiraoka, Saluja, et al., 1979 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
1.4 | 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° | 1.6 ± 0.3 | kcal/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
ΔrH° | 1.53 | kcal/mol | PHPMS | Hiraoka, 1988 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 17.9 | cal/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
ΔrS° | 18.0 | cal/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° | 4.2 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrH° | 3.5 | kcal/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 19.6 | cal/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrS° | 12.1 | cal/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° | 4.5 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrH° | 4.3 | kcal/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 19.1 | cal/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrS° | 13.8 | cal/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° | 4.2 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
ΔrH° | 3.9 | kcal/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 17.4 | cal/mol*K | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
ΔrS° | 12.6 | cal/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° | 10. ± 1. | kcal/mol | KinS | Turner, Simpson, et al., 1983 | solvent: Liquid krypton; The reaction enthalpy relies on the experimental value for the activation enthalpy, 10. ± 1. kcal/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° | 59.4 | kcal/mol | N/A | National Bureau of Standards, 1968 | gas phase; from ΔrH(f); M |
ΔrH° | 60. | kcal/mol | EI | Saporoschenko, 1965 | gas phase; M |
ΔrH° | 59. | kcal/mol | EI | Franklin, Dibeler, et al., 1958 | gas phase; M |
Enthalpy of reaction
ΔrH° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
86.2 (+1.8,-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° | 6.2 | kcal/mol | HPMS | El-Shall, Schriver, et al., 1989 | gas phase; Cu+ from laser desrption; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 16. | cal/mol*K | HPMS | El-Shall, Schriver, et al., 1989 | gas phase; Cu+ from laser desrption; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1.4 | kcal/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° | 3.4 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrH° | 3.8 | kcal/mol | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 20.1 | cal/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrS° | 20. | cal/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° | 3.3 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrH° | 3.5 | kcal/mol | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 21.2 | cal/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrS° | 20. | cal/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° | 3.6 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrH° | 4.0 | kcal/mol | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 19.2 | cal/mol*K | PHPMS | Hiraoka and Mori, 1989 | gas phase; M |
ΔrS° | 18. | cal/mol*K | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
By formula: Na+ + N2 = (Na+ • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.0 | kcal/mol | FA | Perry, Rowe, et al., 1980 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 18.6 | cal/mol*K | FA | Perry, Rowe, et al., 1980 | gas phase; M |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
2.2 | 310. | FA | Perry, Rowe, et al., 1980 | gas phase; M |
2.0 | 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° | 16.0 | kcal/mol | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
ΔrH° | 14.5 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Field, 1974 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 24. | cal/mol*K | PHPMS | Hiraoka, Saluja, et al., 1979 | gas phase; M |
ΔrS° | 20.4 | cal/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° | 4.40 ± 0.41 | kcal/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° | -9.01 ± 0.60 | kcal/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° | 1.2 | kcal/mol | DT | Gheno and Fitaire, 1987 | gas phase; ΔrH, ΔrS approximate; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 6.4 | cal/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° | 2.7 ± 0.2 | kcal/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 16.2 | cal/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
0.7 | 184. | HPMS | Speller and Fitaire, 1983 | gas phase; M |
By formula: (NO- • 2N2) + N2 = (NO- • 3N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 3.8 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 16.8 | cal/mol*K | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
0.9 | 204. | HPMS | Speller, Fitaire, et al., 1983 | gas phase; M |
By formula: (NO- • 3N2) + N2 = (NO- • 4N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 3.4 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 17.9 | cal/mol*K | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; M |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
0.4 | 204. | HPMS | Speller, Fitaire, et al., 1983 | gas phase; M |
By formula: (O2+ • 3N2) + N2 = (O2+ • 4N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 4.0 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 22.5 | cal/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
0.7 | 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° | 3. | kcal/mol | DT | Gheno and Fitaire, 1987 | gas phase; ΔrH, ΔrS approximate; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 12. | cal/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° | 1.68 | kcal/mol | PHPMS | Hiraoka and Yamabe, 1989 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 19. | cal/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° | 1.72 | kcal/mol | PHPMS | Hiraoka and Mori, 1989 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 22. | cal/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° | 2.70 ± 0.20 | kcal/mol | TDAs | Hiraoka, 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 18.4 | cal/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -2.80 ± 0.50 | kcal/mol | TDAs | Hiraoka, 1988 | gas phase; B |
By formula: (C2H5+ • N2) + N2 = (C2H5+ • 2N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 4.6 | kcal/mol | HPMS | Speller, 1983 | gas phase; deuterated, Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 10.9 | cal/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° | 2.8 ± 0.2 | kcal/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
ΔrH° | 1.4 | kcal/mol | PI | Linn, Ono, et al., 1981 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 15.0 | cal/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° | 2.9 | kcal/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 10.1 | cal/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° | 5.3 | kcal/mol | FA | Perry, Rowe, et al., 1980 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 16.8 | cal/mol*K | FA | Perry, Rowe, et al., 1980 | gas phase; M |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
-0.3 | 310. | FA | Perry, Rowe, et al., 1980 | gas phase; M |
By formula: (CH2N+ • 2N2) + N2 = (CH2N+ • 3N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 3.2 | kcal/mol | HPMS | Speller, Fitaire, et al., 1982 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 13.1 | cal/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° | 3.1 | kcal/mol | HPMS | Speller, Fitaire, et al., 1982 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 13.8 | cal/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° | 3.2 | kcal/mol | HPMS | Speller, Fitaire, et al., 1982 | gas phase; Entropy change is questionable; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 15.2 | cal/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° | -62.22 ± 0.11 | kcal/mol | Cm | Howard and Skinner, 1966 | solid phase; solvent: Aqueous solution; Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -62.55 ± 0.11 kcal/mol; ALS |
By formula: O2- + N2 = (O2- • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.0 ± 1.0 | kcal/mol | N/A | Posey and Johnson, 1988 | gas phase; B |
ΔrH° | <13.60 | kcal/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° | 3.90 | kcal/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° | 9.0 ± 2.7 | kcal/mol | DT | Gheno and Fitaire, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 28.4 | cal/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° | 6.5 ± 1. | kcal/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° | 2.5 ± 0.2 | kcal/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 18.3 | cal/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • 3N2 • O2) + N2 = (O2- • 4N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 2.2 ± 0.2 | kcal/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 18.7 | cal/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • 4N2 • O2) + N2 = (O2- • 5N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1.9 ± 0.2 | kcal/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 19.5 | cal/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • 5N2 • O2) + N2 = (O2- • 6N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1.8 ± 0.2 | kcal/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 19.5 | cal/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • 6N2 • O2) + N2 = (O2- • 7N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1.7 ± 0.2 | kcal/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 18.8 | cal/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • N2 • O2) + N2 = (O2- • 2N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 2.8 ± 0.2 | kcal/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 17.9 | cal/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (H3O+ • 2N2 • H2O) + N2 = (H3O+ • 3N2 • H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8. ± 2. | kcal/mol | DT | Gheno and Fitaire, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 22. | cal/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° | 5.2 | kcal/mol | DT | Gheno and Fitaire, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 16.6 | cal/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° | 4.4 | kcal/mol | DT | Gheno and Fitaire, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 15.7 | cal/mol*K | DT | Gheno and Fitaire, 1987 | gas phase; M |
By formula: (O2+ • 10N2) + N2 = (O2+ • 11N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1.4 ± 0.3 | kcal/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 20.2 | cal/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
By formula: (N2+ • 10N2) + N2 = (N2+ • 11N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1.7 ± 0.2 | kcal/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 20.2 | cal/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase; M |
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.
Hiraoka and Yamabe, 1989
Hiraoka, K.; Yamabe, S.,
How are Nitrogen Molecules Bound to NO2+ and NO+?,
J. Chem. Phys., 1989, 90, 6, 3268, https://doi.org/10.1063/1.455880
. [all data]
Gheno and Fitaire, 1987
Gheno, F.; Fitaire, M.,
Association of N2 with NH4+ and H3O+(H2O)n, n = 1,2,3,
J. Chem. Phys., 1987, 87, 2, 953, https://doi.org/10.1063/1.453250
. [all data]
Speller, Fitaire, et al., 1983
Speller, C.V.; Fitaire, M.; Pointu, A.M.,
Three - Body Association Reactions of NO+ and O2+ with N2,
J. Chem. Phys., 1983, 79, 5, 2190, https://doi.org/10.1063/1.446067
. [all data]
Turner and Conway, 1976
Turner, D.L.; Conway, D.C.,
Stability of the NO+.N2 Ion Cluster,
J. Chem. Phys., 1976, 65, 10, 3944, https://doi.org/10.1063/1.432887
. [all data]
Johnsen, Huang, et al., 1975
Johnsen, R.; Huang, C.M.; Biondi, M.A.,
The Formation and Breakup of NO2+.N2 Clusters in N2 at Low Temperatures,
J. Chem. Phys., 1975, 63, 8, 3374, https://doi.org/10.1063/1.431751
. [all data]
Keesee and Castleman, 1986
Keesee, R.G.; Castleman, A.W., Jr.,
Thermochemical data on Ggs-phase ion-molecule association and clustering reactions,
J. Phys. Chem. Ref. Data, 1986, 15, 1011. [all data]
Dunkin, Fehsenfeld, et al., 1971
Dunkin, D.B.; Fehsenfeld, F.C.; Schelmetekopf, A.L.; Ferguson, E.E.,
Three-Body Association Reactions of NO+ with O2, N2, and CO2,
J. Chem. Phys., 1971, 54, 9, 3817, https://doi.org/10.1063/1.1675432
. [all data]
Hiraoka and Nakajima, 1988
Hiraoka, K.; Nakajima, G.,
A Determination of the Stabilities of N2+(N2)n and O2+(N2)n with n = 1 - 11 from Measurements of the Gas - Phase Ion Equilibria,
J. Chem. Phys., 1988, 88, 12, 7709, https://doi.org/10.1063/1.454285
. [all data]
Teng and Conway, 1973
Teng, H.H.; Conway, D.C.,
Ion - Molecule Equilibria in Mixtures of N2 and Ar,
J. Chem. Phys., 1973, 59, 5, 2316, https://doi.org/10.1063/1.1680338
. [all data]
Payzant and Kebarle, 1970
Payzant, J.D.; Kebarle, P.,
Clustering Equilibrium N2+ + 2N2 = N4+ + N2 and the Bond Dissociation Energy of N4+,
J. Chem. Phys., 1970, 53, 12, 4723, https://doi.org/10.1063/1.1674010
. [all data]
Varney, 1968
Varney, R.N.,
Equilibrium Constant and Rates for the Reversible Reaction N4+ -> N2+ + N2,
Phys. Rev., 1968, 174, 1, 165, https://doi.org/10.1103/PhysRev.174.165
. [all data]
Varney, 1959
Varney, R.N.,
Molecular Ions,
J. Chem. Phys., 1959, 31, 5, 1314, https://doi.org/10.1063/1.1730590
. [all data]
Speller and Fitaire, 1983
Speller, C.V.; Fitaire, M.,
Proceedings of the 16th International Conference on Phenomena of Ionized Gases, H. Boetticher, H. Wenk and E. Shulz - Gulde, ed(s)., ICPIG, Dusseldorf, 1983, 568. [all data]
Janik and Conway, 1967
Janik, G.S.; Conway, D.C.,
Bonding in Heteromolecular Ion Clusters. N2O2+,
J. Phys. Chem., 1967, 71, 4, 823, https://doi.org/10.1021/j100863a007
. [all data]
Howard, Bierbaum, et al., 1972
Howard, C.J.; Bierbaum, V.M.; Rundle, H.W.; Kaufman, F.,
Kinetics and Mechanism of Formation of Water Cluster Ions from O2+ and H2O+,
J. Chem. Phys., 1972, 57, 8, 3491, https://doi.org/10.1063/1.1678783
. [all data]
Hiraoka and Mori, 1989
Hiraoka, K.; Mori, T.,
Gas Phase Stabilities of the Cluster Ions H+(CO)2(CO)n, H+(N2)2(N2)n and H+(O2)2(O2)n with n = 1 - 14,
Chem. Phys., 1989, 137, 1-3, 345, https://doi.org/10.1016/0301-0104(89)87119-8
. [all data]
Hiraoka, Saluja, et al., 1979
Hiraoka, K.; Saluja, P.P.S.; Kebarle, P.,
Stabilities of Complexes (N2)nH+, (CO)nH+ and (O2)nH+ for n = 1 to 7 Based on Gas Phase Ion Equilibrium Measurements,
Can. J. Chem., 1979, 57, 16, 2159, https://doi.org/10.1139/v79-346
. [all data]
Hiraoka, 1988
Hiraoka, K.,
Determination of the Stabilities of O3-(N2)n, O3-(O2)n, and O4-(N2)n from Measurements of the Gas Phase Equilibria,
Chem. Phys., 1988, 125, 2-3, 439, https://doi.org/10.1016/0301-0104(88)87096-4
. [all data]
Turner, Simpson, et al., 1983
Turner, J.J.; Simpson, M.B.; Poliakoff, M.; Maier II, W.B.,
J. Am. Chem. Soc., 1983, 105, 3898. [all data]
National Bureau of Standards, 1968
National Bureau of Standards, US,
Technical Note 270 - 3
in The NBS Tables of Chemical Thermodynamic Properties, 1968. [all data]
Saporoschenko, 1965
Saporoschenko, M.,
Mobility of Mass Analyzed N+, N2+, N3+, and N4+ Ions in Nitrogen Gas,
Phys. Rev. A, 1965, 139, 352. [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]
Haynes, Freysinger, et al., 1995
Haynes, C.L.; Freysinger, W.; Armentrout, P.B.,
Collision-induced dissociation of N3+(X3-) with Ne, Ar, Kr, and Xe,
Int. J. Mass Spectrom. Ion Processes, 1995, 149/150, 267. [all data]
El-Shall, Schriver, et al., 1989
El-Shall, M.S.; Schriver, K.E.; Whetten, R.L.; Meot-Ner (Mautner), M.,
Ion/Molecule Clustering Thermochemistry by Laser Ionization High - Pressure Mass Spectrometry,
J. Phys. Chem., 1989, 93, 24, 7969, https://doi.org/10.1021/j100361a002
. [all data]
Perry, Rowe, et al., 1980
Perry, R.A.; Rowe, B.R.; Viggiano, A.A.; Albritton, D.L.; Ferguson, E.E.; Fehsenfeld, F.C.,
Laboratory Measurements of Stratospheric Sodium Ion Measurements,
Geophys. Res. Lett., 1980, 7, 9, 693, https://doi.org/10.1029/GL007i009p00693
. [all data]
Beyer and Keller, 1971
Beyer, R.A.; Keller, G.E.,
The Clustering of Atmospheric Gases to Alkali Ions,
Trans. Am. Geophys. Union, 1971, 52, 303. [all data]
Meot-Ner (Mautner) and Field, 1974
Meot-Ner (Mautner), M.; Field, F.H.,
Kinetics and Thermodynamics of the Association of CO+ with CO and of N2+ with N2 between 120 and 650 K,
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. [all data]
Gonzalez and Hoff, 1989
Gonzalez, A.A.; Hoff, C.D.,
Inorg. Chem., 1989, 28, 4295. [all data]
Speller, 1983
Speller, C.V.,
Ph. D. Thesis, Universite de Paris Sud, 1983. [all data]
Linn, Ono, et al., 1981
Linn, S.H.; Ono, Y.; Ng, C.Y.,
Molecular Beam Photoionization Study of CO, N2, and NO Dimers and Clusters,
J. Chem. Phys., 1981, 74, 6, 3342, https://doi.org/10.1063/1.441486
. [all data]
Speller, Fitaire, et al., 1982
Speller, C.V.; Fitaire, M.; Pointu, A.M.,
H2CN+.nN2 Clustering Formation and the Atmosphere of Titan,
Nature, 1982, 300, 5892, 507, https://doi.org/10.1038/300507a0
. [all data]
Howard and Skinner, 1966
Howard, P.B.; Skinner, H.A.,
Thermochemistry of some reactions of aqueous hydrazine with halogens, hydrogen halides and N-halogenosuccinimides,
J. Chem. Soc. A, 1966, 1536-1540. [all data]
Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P.,
Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]
Posey and Johnson, 1988
Posey, L.A.; Johnson, M.A.,
Pulsed Photoelectron Spectroscopy of Negative Cluster Ions: Isolation of Three Distinguishable Forms of N2O2-,
J. Chem. Phys., 1988, 88, 9, 5385, https://doi.org/10.1063/1.454576
. [all data]
Adams and Bohme, 1970
Adams, N.G.; Bohme, D.,
Flowing Afterglow Studies of Formation and Reactions of Cluster Ions of O2+, O2-, and O-,
J. Chem. Phys., 1970, 52, 6, 3133, https://doi.org/10.1063/1.1673449
. [all data]
Belt, Scaiano, et al., 1993
Belt, S.T.; Scaiano, J.C.; Whittlesey, M.K.,
J. Am. Chem. Soc., 1993, 115, 1921. [all data]
Johnson, Popov, et al., 1991
Johnson, F.P.A.; Popov, V.K.; George, M.W.; Bagratashvili, V.N.; Poliakoff, M.; Turner, J.J.,
Mendeleev Commun., 1991, 145.. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
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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