Oxygen cation
- Formula: O2+
- Molecular weight: 31.9983
- IUPAC Standard InChI:
- InChI=1S/O2/c1-2/q+1
- Download the identifier in a file.
- IUPAC Standard InChIKey: KMHJKRGRIJONSV-UHFFFAOYSA-N
- CAS Registry Number: 12185-07-8
- 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. - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Options:
Gas phase thermochemistry data
Go To: Top, Reaction thermochemistry data, Ion clustering data, Constants of diatomic molecules, 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 | 206.22 | J/mol*K | Review | Chase, 1998 | Data last reviewed in September, 1977 |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Ion clustering data, Constants of diatomic molecules, 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: Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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
By formula: O2+ + CO2 = (O2+ CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 41. ± 4. | kJ/mol | AVG | N/A | Average of 4 out of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 73.2 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
![]() | 79.1 | J/mol*K | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=41.0 kJ/mol |
![]() | 86.6 | J/mol*K | N/A | Dotan, Davidson, et al., 1978 | gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970 |
![]() | 84. | J/mol*K | N/A | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change calculated or estimated, DG>, «DELTA»rH> |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 18. | kJ/mol | DT | Rakshit and Warneck, 1981 | gas phase |
![]() | 18. | kJ/mol | FA | Dotan, Davidson, et al., 1978 | gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970 |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
39. | 600. | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change calculated or estimated, DG>, «DELTA»rH> |
By formula: O2+ + O2 = (O2+ O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 41. ± 5. | kJ/mol | AVG | N/A | Average of 5 out of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 78.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 104.7 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
![]() | 84. | J/mol*K | PHPMS | Durden, Kebarle, et al., 1969 | gas phase |
![]() | 86.2 | J/mol*K | PHPMS | Yang and Conway, 1964 | gas phase |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
16. | 300. | DT | Rakshit and Warneck, 1981 | gas phase |
14. | 300. | DT | Rakshit and Warneck, 1980 | gas phase |
14. | 296. | FA | Howard, Bierbaum, et al., 1972 | gas phase |
25. | 200. | FA | Adams and Bohme, 1970 | gas phase |
By formula: O2+ + N2 = (O2+ N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 21. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 22. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase |
![]() | 24. | kJ/mol | PHPMS | Janik and Conway, 1967 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 72.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 66.1 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase |
![]() | 79.1 | J/mol*K | PHPMS | Janik and Conway, 1967 | gas phase |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
0.0 | 296. | FA | Howard, Bierbaum, et al., 1972 | gas phase |
By formula: O2+ + O3 = (O2+ O3)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 60.7 | kJ/mol | FA | Dotan, Davidson, et al., 1978 | gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970 |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 85.8 | J/mol*K | N/A | Dotan, Davidson, et al., 1978 | gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970 |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 35. | kJ/mol | FA | Dotan, Davidson, et al., 1978 | gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970 |
By formula: O2+ + N2O = (O2+ N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 56.1 | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
![]() | 45. ± 2. | kJ/mol | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=45.2 kJ/mol |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 96. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
![]() | 64.0 | J/mol*K | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=45.2 kJ/mol |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
37. | 200. | FA | Adams and Bohme, 1970 | gas phase; switching reaction(O2+)O2 |
By formula: (O2+ CO2) + CO2 = (O2+
2CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 36. ± 2. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
![]() | 31. | kJ/mol | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 78.2 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
![]() | 63. | J/mol*K | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change is questionable |
By formula: (O2+ 2N2) + N2 = (O2+
3N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 18. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 15. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 82.0 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 50.6 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
By formula: (O2+ N2) + N2 = (O2+
2N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 19. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 18. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 79.9 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 57.7 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
By formula: (O2+ O2) + O2 = (O2+
2O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 25. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 28.7 ± 0.3 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 110. | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 133.0 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
By formula: (O2+ 3O2) + O2 = (O2+
4O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 9.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 10.3 ± 0.75 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 88.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 100. | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
By formula: (O2+ 2O2) + O2 = (O2+
3O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 10.4 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 10.6 ± 0.4 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 78.2 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 82.8 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
By formula: (O2+ 4O2) + O2 = (O2+
5O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 8.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 8. ± 3. | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 89.5 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 71.1 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
By formula: (O2+ 4N2) + N2 = (O2+
5N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 11.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 67.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
3. | 184. | HPMS | Speller and Fitaire, 1983 | gas phase |
By formula: (O2+ 3N2) + N2 = (O2+
4N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 17. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 94.1 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
3. | 204. | HPMS | Speller and Fitaire, 1983 | gas phase |
By formula: (O2+ 5CO2) + CO2 = (O2+
6CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 17. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase; Entropy change calculated or estimated |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 84. | J/mol*K | N/A | Hiraoka, Nakajima, et al., 1988 | gas phase; Entropy change calculated or estimated |
By formula: (O2+ 7O2) + O2 = (O2+
8O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 7.61 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; Entropy change calculated or estimated |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 92. | J/mol*K | N/A | Hiraoka, 1988 | gas phase; Entropy change calculated or estimated |
By formula: (O2+ O2) + N2 = (O2+
N2
O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 12. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 42.3 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
By formula: (O2+ 10N2) + N2 = (O2+
11N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 6. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 84.5 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ 9N2) + N2 = (O2+
10N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 7.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 87.0 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ 5N2) + N2 = (O2+
6N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 10.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 67.4 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ 6N2) + N2 = (O2+
7N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 9.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 77.4 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ 7N2) + N2 = (O2+
8N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 8.8 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 80.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ 8N2) + N2 = (O2+
9N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 7.9 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 79.9 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ 2N2O) + N2O = (O2+
3N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 25. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 79. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (O2+ 2CO2) + CO2 = (O2+
3CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 26. ± 1. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 82.8 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
By formula: (O2+ 3N2O) + N2O = (O2+
4N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 22. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 92. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (O2+ 3CO2) + CO2 = (O2+
4CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 21. ± 1. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 82.0 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
By formula: (O2+ 4N2O) + N2O = (O2+
5N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 20. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 96. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (O2+ 4CO2) + CO2 = (O2+
5CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 19. ± 2. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 83.7 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
By formula: (O2+ 5N2O) + N2O = (O2+
6N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 18. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 92. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (O2+ 6N2O) + N2O = (O2+
7N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 16. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 84. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (O2+ N2O) + N2O = (O2+
2N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 31. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 84. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (O2+ 5O2) + O2 = (O2+
6O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 8. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 90.8 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
By formula: (O2+ 6O2) + O2 = (O2+
7O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 8. ± 2. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 91.6 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
By formula: O2+ + O2S = (O2+ O2S)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 40. | kJ/mol | FA | Adams and Bohme, 1970 | gas phase; switching reaction(O2+)O2; Conway and Janik, 1970 |
By formula: O2+ + H2O = (O2+ H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 67. | kJ/mol | FA | Adams and Bohme, 1970 | gas phase; switching reaction(O2+)SO2, «DELTA»rH> |
By formula: (O2+ N2
O2) + N2 = (O2+
2N2
O2)
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
2. | 230. | HPMS | Speller and Fitaire, 1983 | gas phase |
By formula: O2+ + Kr = (O2+ Kr)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 32. | kJ/mol | PDiss | Jarrold, Misev, et al., 1984 | gas phase |
Ion clustering data
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Constants of diatomic molecules, 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: Michael M. Meot-Ner (Mautner) and Sharon G. Lias
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
By formula: O2+ + CO2 = (O2+ CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 41. ± 4. | kJ/mol | AVG | N/A | Average of 4 out of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 73.2 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
![]() | 79.1 | J/mol*K | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=41.0 kJ/mol |
![]() | 86.6 | J/mol*K | N/A | Dotan, Davidson, et al., 1978 | gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970 |
![]() | 84. | J/mol*K | N/A | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change calculated or estimated, DG>, «DELTA»rH> |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 18. | kJ/mol | DT | Rakshit and Warneck, 1981 | gas phase |
![]() | 18. | kJ/mol | FA | Dotan, Davidson, et al., 1978 | gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970 |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
39. | 600. | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change calculated or estimated, DG>, «DELTA»rH> |
By formula: (O2+ CO2) + CO2 = (O2+
2CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 36. ± 2. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
![]() | 31. | kJ/mol | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 78.2 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
![]() | 63. | J/mol*K | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change is questionable |
By formula: (O2+ 2CO2) + CO2 = (O2+
3CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 26. ± 1. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 82.8 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
By formula: (O2+ 3CO2) + CO2 = (O2+
4CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 21. ± 1. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 82.0 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
By formula: (O2+ 4CO2) + CO2 = (O2+
5CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 19. ± 2. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 83.7 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
By formula: (O2+ 5CO2) + CO2 = (O2+
6CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 17. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase; Entropy change calculated or estimated |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 84. | J/mol*K | N/A | Hiraoka, Nakajima, et al., 1988 | gas phase; Entropy change calculated or estimated |
By formula: O2+ + H2O = (O2+ H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 67. | kJ/mol | FA | Adams and Bohme, 1970 | gas phase; switching reaction(O2+)SO2, «DELTA»rH> |
By formula: O2+ + Kr = (O2+ Kr)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 32. | kJ/mol | PDiss | Jarrold, Misev, et al., 1984 | gas phase |
By formula: O2+ + N2O = (O2+ N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 56.1 | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
![]() | 45. ± 2. | kJ/mol | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=45.2 kJ/mol |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 96. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
![]() | 64.0 | J/mol*K | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=45.2 kJ/mol |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
37. | 200. | FA | Adams and Bohme, 1970 | gas phase; switching reaction(O2+)O2 |
By formula: (O2+ N2O) + N2O = (O2+
2N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 31. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 84. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (O2+ 2N2O) + N2O = (O2+
3N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 25. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 79. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (O2+ 3N2O) + N2O = (O2+
4N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 22. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 92. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (O2+ 4N2O) + N2O = (O2+
5N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 20. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 96. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (O2+ 5N2O) + N2O = (O2+
6N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 18. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 92. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (O2+ 6N2O) + N2O = (O2+
7N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 16. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 84. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: O2+ + N2 = (O2+ N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 21. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 22. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase |
![]() | 24. | kJ/mol | PHPMS | Janik and Conway, 1967 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 72.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 66.1 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase |
![]() | 79.1 | J/mol*K | PHPMS | Janik and Conway, 1967 | gas phase |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
0.0 | 296. | FA | Howard, Bierbaum, et al., 1972 | gas phase |
By formula: (O2+ N2) + N2 = (O2+
2N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 19. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 18. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 79.9 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 57.7 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
By formula: (O2+ 2N2) + N2 = (O2+
3N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 18. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 15. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 82.0 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
![]() | 50.6 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
By formula: (O2+ 3N2) + N2 = (O2+
4N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 17. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 94.1 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
3. | 204. | HPMS | Speller and Fitaire, 1983 | gas phase |
By formula: (O2+ 4N2) + N2 = (O2+
5N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 11.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 67.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
3. | 184. | HPMS | Speller and Fitaire, 1983 | gas phase |
By formula: (O2+ 5N2) + N2 = (O2+
6N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 10.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 67.4 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ 6N2) + N2 = (O2+
7N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 9.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 77.4 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ 7N2) + N2 = (O2+
8N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 8.8 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 80.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ 8N2) + N2 = (O2+
9N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 7.9 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 79.9 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ 9N2) + N2 = (O2+
10N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 7.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 87.0 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ 10N2) + N2 = (O2+
11N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 6. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 84.5 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
By formula: (O2+ N2
O2) + N2 = (O2+
2N2
O2)
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
2. | 230. | HPMS | Speller and Fitaire, 1983 | gas phase |
By formula: O2+ + O2S = (O2+ O2S)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 40. | kJ/mol | FA | Adams and Bohme, 1970 | gas phase; switching reaction(O2+)O2; Conway and Janik, 1970 |
By formula: O2+ + O2 = (O2+ O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 41. ± 5. | kJ/mol | AVG | N/A | Average of 5 out of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 78.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 104.7 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
![]() | 84. | J/mol*K | PHPMS | Durden, Kebarle, et al., 1969 | gas phase |
![]() | 86.2 | J/mol*K | PHPMS | Yang and Conway, 1964 | gas phase |
Free energy of reaction
![]() |
T (K) | Method | Reference | Comment |
---|---|---|---|---|
16. | 300. | DT | Rakshit and Warneck, 1981 | gas phase |
14. | 300. | DT | Rakshit and Warneck, 1980 | gas phase |
14. | 296. | FA | Howard, Bierbaum, et al., 1972 | gas phase |
25. | 200. | FA | Adams and Bohme, 1970 | gas phase |
By formula: (O2+ O2) + N2 = (O2+
N2
O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 12. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 42.3 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
By formula: (O2+ O2) + O2 = (O2+
2O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 25. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 28.7 ± 0.3 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 110. | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 133.0 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
By formula: (O2+ 2O2) + O2 = (O2+
3O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 10.4 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 10.6 ± 0.4 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 78.2 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 82.8 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
By formula: (O2+ 3O2) + O2 = (O2+
4O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 9.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 10.3 ± 0.75 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 88.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 100. | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
By formula: (O2+ 4O2) + O2 = (O2+
5O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 8.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 8. ± 3. | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 89.5 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
![]() | 71.1 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
By formula: (O2+ 5O2) + O2 = (O2+
6O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 8. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 90.8 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
By formula: (O2+ 6O2) + O2 = (O2+
7O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 8. ± 2. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 91.6 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
By formula: (O2+ 7O2) + O2 = (O2+
8O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 7.61 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; Entropy change calculated or estimated |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 92. | J/mol*K | N/A | Hiraoka, 1988 | gas phase; Entropy change calculated or estimated |
By formula: O2+ + O3 = (O2+ O3)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
![]() | 60.7 | kJ/mol | FA | Dotan, Davidson, et al., 1978 | gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970 |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 85.8 | J/mol*K | N/A | Dotan, Davidson, et al., 1978 | gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970 |
Quantity | Value | Units | Method | Reference | Comment |
![]() | 35. | kJ/mol | FA | Dotan, Davidson, et al., 1978 | gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970 |
Constants of diatomic molecules
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering 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: Klaus P. Huber and Gerhard H. Herzberg
Data collected through March, 1977
Symbol | Meaning |
---|---|
State | electronic state and / or symmetry symbol |
Te | minimum electronic energy (cm-1) |
ωe | vibrational constant – first term (cm-1) |
ωexe | vibrational constant – second term (cm-1) |
ωeye | vibrational constant – third term (cm-1) |
Be | rotational constant in equilibrium position (cm-1) |
αe | rotational constant – first term (cm-1) |
γe | rotation-vibration interaction constant (cm-1) |
De | centrifugal distortion constant (cm-1) |
βe | rotational constant – first term, centrifugal force (cm-1) |
re | internuclear distance (Å) |
Trans. | observed transition(s) corresponding to electronic state |
ν00 | position of 0-0 band (units noted in table) |
State | Te | ![]() | ![]() | ![]() | Be | ![]() | ![]() | De | ![]() | re | Trans. | ![]() |
---|---|---|---|---|---|---|---|---|---|---|---|---|
A detailed review of O2+ and its spectrum may be found in Krupenie, 1972. Predicted electronc states and potential functions Beebe, Thulstrup, et al., 1976; contains references to earlier theoretical work. | ||||||||||||
x2 2![]() | 532.1 eV 1 | x2 ![]() | 526.4 eV 2 | |||||||||
↳LaVilla, 1975 | ||||||||||||
(x2 ![]() | 531.8 eV 3 | |||||||||||
↳LaVilla, 1975 | ||||||||||||
x1 4![]() | 531.0 eV 1 | x1 ![]() | 526.4 eV 2 | |||||||||
↳LaVilla, 1975 | ||||||||||||
Several additional states observed in ESCA studies Siegbahn, Nordling, et al., 1969 and tentatively assigned by Jonathan, Morris, et al., 1974. | ||||||||||||
State | Te | ![]() | ![]() | ![]() | Be | ![]() | ![]() | De | ![]() | re | Trans. | ![]() |
(2![]() | 29.5 eV 4 | |||||||||||
(4![]() | 27.5 eV 4 | |||||||||||
(2![]() | 15.8 eV 5 | |||||||||||
c 4![]() | (100914) | [1545] 6 | [1.561] 7 | [6.7E-6] | [1.1620] | c ![]() | 51540.7 Z | |||||
↳LeBlanc, 1963; missing citation | ||||||||||||
(2![]() | (90000) 8 | |||||||||||
B 2![]() | 66719 | 1156 9 | 22 9 | (1.298) 10 | ||||||||
State | Te | ![]() | ![]() | ![]() | Be | ![]() | ![]() | De | ![]() | re | Trans. | ![]() |
D (2![]() | 62730 | 920 11 | (12) | (1.33) 12 | ||||||||
C (2![]() | (53620) | (900) 13 | ||||||||||
b 4![]() | 49552 | 1196.77 Z | 17.09 14 | 1.28729 15 | 0.02206 | 5.81E-6 | 1.85E-7 | 1.27964 | b 16 ![]() | 16666.74 Z | ||
↳Nevin, 1938; Nevin and Murphy, 1941; Weniger, 1962 | ||||||||||||
b' (4![]() | (48000) 18 | b' ![]() | ||||||||||
↳Moselev, Tadjeddine, et al., 1976 | ||||||||||||
A 2![]() | 40669.3 19 | 898.25 Z | 13.573 7 | 1.06170 | 0.01936 20 | -1.73E-4 | 5.94E-6 21 | 1.40905 | A 22 ![]() | 40068.1 Z | ||
↳Bozoky, 1937; Feast, 1950; Bhale and Rao, 1968; Krupenie, 1972; Albritton, Harrop, et al., 1973; Colbourn and Douglas, 1977; Bhale and Narasimham, 1976 | ||||||||||||
State | Te | ![]() | ![]() | ![]() | Be | ![]() | ![]() | De | ![]() | re | Trans. | ![]() |
a 4![]() | 32964 24 | 1035.69 Z | 10.39 14 | 1.10466 | 0.01575 25 | 4.88E-6 25 | 1.38138 | |||||
X 2![]() | 197.3 26 | 1904.77 Z | 16.259 14 | 1.6913 | 0.01976 27 | 5.32E-6 28 | 1.1164 | |||||
0 | 1904.77 Z | 16.259 14 | 1.6913 | 0.01976 27 | 5.32E-6 28 | 1.1164 |
Notes
1 | Removal of a 1s0 electron from the ground state of O2. 31 |
2 | Unresolved vertical transitions. |
3 | Predicted vertical transition; in the X-ray emission spectrum of LaVilla, 1975 this transition is hidden by an artefact. |
4 | Removal of a 2![]() |
5 | Removal of a 2![]() |
6 | Average of values obtained by photoelectron spectroscopy Edqvist, Lindholm, et al., 1970 and from the limits of Codling and Madden's Rydberg series. |
7 | Spin splitting constant ![]() |
8 | Diffuse (predissociating) state observed in the photoelectron spectrum of O2;
vertical I.P. ~24 eV Edqvist, Lindholm, et al., 1970, Gardner and Samson, 1975. Probably highest 2![]() ![]() ![]() |
9 | From the limits of Tanaka and Takamine's Rydberg series; in good agreement with constants obtained from photoelectron spectra Edqvist, Lindholm, et al., 1970. Predissociation Doolittle, Schoen, et al., 1968, Schopman and Locht, 1974, Stockdale and Deleanu, 1974. |
10 | Franck-Condon factor analysis of photoelectron band intensities Jonathan, Morris, et al., 1974. |
11 | Only observed in the photoelectron spectrum of O2(1![]() |
12 | Franck-Condon factor analysis of the photoelectron spectrum Jonathan, Morris, et al., 1974. |
13 | Only observed in the photoelectron spectrum of O2(1![]() |
14 | RKR potential curves Krupenie, 1972, Albritton, Schmeltekopf, et al., 1979. Calculated Franck-Condon factors for ionizing transitions
from X 3![]() ![]() ![]() ![]() ![]() ![]() ![]() |
15 | Spin splitting constant ![]() |
16 | Radiative lifetime ![]() ![]() |
17 | Observed in various discharges Rao, 1963 and in aurorae Nicolet and Dogniaux, 1950, Vegard, 1950, Dahlstrom and Hunten, 1951, Rao, 1964. Excitation by electron impact Nishimura, 1968, by fast ions Herman, Ferguson, et al., 1961, Dufay, Druetta, et al., 1965. Franck-Condon factors Krupenie, 1972, Albritton, Schmeltekopf, et al., 1979. Rotational line strengths Zare, 1972. |
18 | Weakly bound state arising from 3P + 4S Beebe, Thulstrup, et al., 1976; in its unstable region observed by laser photofragment spectroscopy. |
19 | Av increases from A0 = -3.6 to A15 = +10.0 Bhale, 1972, Albritton, Harrop, et al., 1973, Colbourn and Douglas, 1977, Bhale and Narasimham, 1976. Theoretical interpretation Raftery and Richards, 1975. |
20 | Constants fitted to v'![]() ![]() |
21 | Dv= +0.06(v+1/2) + 0.012(v+1/2)2 Albritton, Harrop, et al., 1973; the Dv values have been computed Albritton, Harrop, et al., 1973 from the experimental potential curve. |
22 | Radiative lifetime ![]() ![]() |
23 | Excitation by electron impact; its effect on the rotational temperature Branscomb, 1950. Franck-Condon factors Asundi and Ramachandrarao, 1969, Albritton, Schmeltekopf, et al., 1969, Krupenie, 1972, Albritton, Schmeltekopf, et al., 1979. |
24 | A0...A6 = -47.79 ... -48.01 Kovacs and Weniger, 1962; anomalous dependence on J of the multiplet splitting
Budo and Kovacs, 1955, Kovacs and Weniger, 1962. Te calculated from the limit (b 4![]() ![]() |
25 | Constants representing v=0,1,2; ![]() |
26 | Av decreases from A0 = +200.33 Colbourn and Douglas, 1977 to A10 = +192.05 Albritton, Harrop, et al., 1973. See also Raftery and Richards, 1975. |
27 | Constants fitted to v![]() ![]() |
28 | Dv= +0.03E-6(v+1/2) + ... Albritton, Harrop, et al., 1973; Dv computed from RKR potential Albritton, Harrop, et al., 1973. |
29 | D00(O2) + I.P.(O) - I.P.(O2) |
30 | From the electron impact appearance potential of O2++, A.P. = 36.3 eV Dorman and Morrison, 1963, and I.P.(O2). Daly and Powell, 1967 give A.P. = 37.2 eV. |
31 | Highly excited states (K limits) observed in X-ray photo-electron Siegbahn, Nordling, et al., 1969 and emission LaVilla, 1975 spectra. |
32 | Observed in the low-resolution X-ray photoelectron spectrum of Siegbahn, Nordling, et al., 1969. In the 304 Å
photoelectron spectrum Gardner and Samson, 1975, 2, Gardner and Samson, 1975 find a very broad maximum corresponding to 4![]() ![]() |
33 | Observed in the X-ray photoelectron spectrum Siegbahn, Nordling, et al., 1969. A very weak broad maximum appears near 27.5 eV in the 304 Å photoelectron spectrum of Edqvist, Lindholm, et al., 1970; not confirmed by Gardner and Samson, 1975. See also Jonathan, Morris, et al., 1974. |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, Constants of diatomic molecules, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Hiraoka, Nakajima, et al., 1988
Hiraoka, K.; Nakajima, G.; Shoda, S.,
Determination of the Stabilities of CO2+(CO2)n and O2+(CO2)n Clusters with n = 1 - 6,
Chem. Phys. Lett., 1988, 146, 6, 535, https://doi.org/10.1016/0009-2614(88)87495-5
. [all data]
Illies, 1988
Illies, A.J.,
Thermochemistry of the Gas - Phase Ion - Molecule Clustering of CO2+CO2, SO2+CO2, N2O+N2O, O2+CO2, NO+CO2 and NO+N2O: Description of a New Hybrid Drift Tube/Ion Source with Coaxial Electron Beam and Ion Exit Apertures,
J. Phys. Chem., 1988, 92, 10, 2889, https://doi.org/10.1021/j100321a037
. [all data]
Dotan, Davidson, et al., 1978
Dotan, I.; Davidson, J.A.; Fehsenfeld, F.C.; Albritton, D.L.,
Reactions of O2+.O2 with CO2, O3 and CH4 and O2+.O3 with H2O and CH4 and their Role in Stratospheric Ion Chemistry,
J. Geophys. Res., 1978, 83, C8, 4036, https://doi.org/10.1029/JC083iC08p04036
. [all data]
Conway and Janik, 1970
Conway, D.C.; Janik, G.S.,
Determination of the Bond Energies for the Series O2 - O2+ through O2 - O10+,
J. Chem. Phys., 1970, 53, 5, 1859, https://doi.org/10.1063/1.1674262
. [all data]
Meot-Ner (Mautner) and Field, 1977
Meot-Ner (Mautner), M.; Field, F.H.,
Proton Affinity and Ion - Molecule Clustering in CO2 and CS2. Applications in Martian Ionospheric Chemistry,
J. Chem. Phys., 1977, 66, 10, 4527, https://doi.org/10.1063/1.433706
. [all data]
Rakshit and Warneck, 1981
Rakshit, A.B.; Warneck, P.,
Formation and Reactions of O2+.CO2, O2+.H2O and O2+(CO2)2 Ions,
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Oscillator strengths of the negative systems of oxygen,
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Radiative lifetime of O2+,
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O2+ and H in the auroral spectrum,
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Zare, R.N.,
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Kovacs, I.; Weniger, S.,
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Veseth, L.,
Fine structure of 4«PI» states in diatomic molecules,
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Ionization potentials of doubly charged oxygen and nitrogen,
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Electron collisions in oxygen,
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Gardner, J.L.; Samson, J.A.R.,
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Notes
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- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) T Temperature rG°
Free energy of reaction at standard conditions rH°
Enthalpy of reaction at standard conditions rS°
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