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:
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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 |
|---|---|---|---|---|---|
 rH° | 41. ± 4. | kJ/mol | AVG | N/A | Average of 4 out of 6 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 73.2 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| rS° | 79.1 | J/mol*K | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=41.0 kJ/mol |
| rS° | 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 |
| rS° | 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 |
| rG° | 18. | kJ/mol | DT | Rakshit and Warneck, 1981 | gas phase |
| rG° | 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
| rG° (kJ/mol) |
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 |
|---|---|---|---|---|---|
| rH° | 41. ± 5. | kJ/mol | AVG | N/A | Average of 5 out of 6 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 78.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
| rS° | 104.7 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
| rS° | 84. | J/mol*K | PHPMS | Durden, Kebarle, et al., 1969 | gas phase |
| rS° | 86.2 | J/mol*K | PHPMS | Yang and Conway, 1964 | gas phase |
Free energy of reaction
| rG° (kJ/mol) |
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 |
|---|---|---|---|---|---|
| rH° | 21. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rH° | 22. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase |
| rH° | 24. | kJ/mol | PHPMS | Janik and Conway, 1967 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 72.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rS° | 66.1 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase |
| rS° | 79.1 | J/mol*K | PHPMS | Janik and Conway, 1967 | gas phase |
Free energy of reaction
| rG° (kJ/mol) |
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 |
|---|---|---|---|---|---|
| rH° | 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 |
| rS° | 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 |
| rG° | 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 |
|---|---|---|---|---|---|
| rH° | 56.1 | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| rH° | 45. ± 2. | kJ/mol | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=45.2 kJ/mol |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 96. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| rS° | 64.0 | J/mol*K | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=45.2 kJ/mol |
Free energy of reaction
| rG° (kJ/mol) |
T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 37. | 200. | FA | Adams and Bohme, 1970 | gas phase; switching reaction(O2+)O2 |
(
) +
= (
2)
By formula: (O2+ CO2) + CO2 = (O2+ 2CO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 36. ± 2. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| rH° | 31. | kJ/mol | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change is questionable |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 78.2 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| rS° | 63. | J/mol*K | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change is questionable |
(
2) +
= (
3)
By formula: (O2+ 2N2) + N2 = (O2+ 3N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 18. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rH° | 15. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 82.0 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rS° | 50.6 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
(
) +
= (
2)
By formula: (O2+ N2) + N2 = (O2+ 2N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 19. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rH° | 18. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 79.9 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rS° | 57.7 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
(
) +
= (
2)
By formula: (O2+ O2) + O2 = (O2+ 2O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 25. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| rH° | 28.7 ± 0.3 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 110. | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
| rS° | 133.0 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
(
3) +
= (
4)
By formula: (O2+ 3O2) + O2 = (O2+ 4O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 9.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| rH° | 10.3 ± 0.75 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 88.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
| rS° | 100. | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
(
2) +
= (
3)
By formula: (O2+ 2O2) + O2 = (O2+ 3O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 10.4 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| rH° | 10.6 ± 0.4 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 78.2 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
| rS° | 82.8 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
(
4) +
= (
5)
By formula: (O2+ 4O2) + O2 = (O2+ 5O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 8.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| rH° | 8. ± 3. | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 89.5 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
| rS° | 71.1 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
(
4) +
= (
5)
By formula: (O2+ 4N2) + N2 = (O2+ 5N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 11.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 67.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Free energy of reaction
| rG° (kJ/mol) |
T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3. | 184. | HPMS | Speller and Fitaire, 1983 | gas phase |
(
3) +
= (
4)
By formula: (O2+ 3N2) + N2 = (O2+ 4N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 17. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 94.1 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Free energy of reaction
| rG° (kJ/mol) |
T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3. | 204. | HPMS | Speller and Fitaire, 1983 | gas phase |
(
5) +
= (
6)
By formula: (O2+ 5CO2) + CO2 = (O2+ 6CO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 17. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 84. | J/mol*K | N/A | Hiraoka, Nakajima, et al., 1988 | gas phase; Entropy change calculated or estimated |
(
7) +
= (
8)
By formula: (O2+ 7O2) + O2 = (O2+ 8O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 7.61 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 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 |
|---|---|---|---|---|---|
| rH° | 12. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 42.3 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
(
10) +
= (
11)
By formula: (O2+ 10N2) + N2 = (O2+ 11N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 6. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 84.5 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
9) +
= (
10)
By formula: (O2+ 9N2) + N2 = (O2+ 10N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 7.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 87.0 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
5) +
= (
6)
By formula: (O2+ 5N2) + N2 = (O2+ 6N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 10.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 67.4 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
6) +
= (
7)
By formula: (O2+ 6N2) + N2 = (O2+ 7N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 9.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 77.4 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
7) +
= (
8)
By formula: (O2+ 7N2) + N2 = (O2+ 8N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 8.8 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 80.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
8) +
= (
9)
By formula: (O2+ 8N2) + N2 = (O2+ 9N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 7.9 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 79.9 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
2) +
= (
3)
By formula: (O2+ 2N2O) + N2O = (O2+ 3N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 25. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 79. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
(
2) +
= (
3)
By formula: (O2+ 2CO2) + CO2 = (O2+ 3CO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 26. ± 1. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 82.8 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
(
3) +
= (
4)
By formula: (O2+ 3N2O) + N2O = (O2+ 4N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 22. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 92. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
(
3) +
= (
4)
By formula: (O2+ 3CO2) + CO2 = (O2+ 4CO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 21. ± 1. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 82.0 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
(
4) +
= (
5)
By formula: (O2+ 4N2O) + N2O = (O2+ 5N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 20. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 96. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
(
4) +
= (
5)
By formula: (O2+ 4CO2) + CO2 = (O2+ 5CO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 19. ± 2. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 83.7 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
(
5) +
= (
6)
By formula: (O2+ 5N2O) + N2O = (O2+ 6N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 18. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 92. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
(
6) +
= (
7)
By formula: (O2+ 6N2O) + N2O = (O2+ 7N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 16. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 84. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
(
) +
= (
2)
By formula: (O2+ N2O) + N2O = (O2+ 2N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 31. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 84. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
(
5) +
= (
6)
By formula: (O2+ 5O2) + O2 = (O2+ 6O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 8. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 90.8 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
(
6) +
= (
7)
By formula: (O2+ 6O2) + O2 = (O2+ 7O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 8. ± 2. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 91.6 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
+
= (
)
By formula: O2+ + O2S = (O2+ O2S)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rG° | 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 |
|---|---|---|---|---|---|
| rH° | 67. | kJ/mol | FA | Adams and Bohme, 1970 | gas phase; switching reaction(O2+)SO2, «DELTA»rH> |
(
) +
= (
2
)
By formula: (O2+ N2 O2) + N2 = (O2+ 2N2 O2)
Free energy of reaction
| rG° (kJ/mol) |
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 |
|---|---|---|---|---|---|
| rH° | 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 |
|---|---|---|---|---|---|
| rH° | 41. ± 4. | kJ/mol | AVG | N/A | Average of 4 out of 6 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 73.2 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| rS° | 79.1 | J/mol*K | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=41.0 kJ/mol |
| rS° | 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 |
| rS° | 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 |
| rG° | 18. | kJ/mol | DT | Rakshit and Warneck, 1981 | gas phase |
| rG° | 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
| rG° (kJ/mol) |
T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 39. | 600. | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change calculated or estimated, DG>, «DELTA»rH> |
(
) +
= (
2)
By formula: (O2+ CO2) + CO2 = (O2+ 2CO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 36. ± 2. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| rH° | 31. | kJ/mol | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change is questionable |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 78.2 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| rS° | 63. | J/mol*K | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase; Entropy change is questionable |
(
2) +
= (
3)
By formula: (O2+ 2CO2) + CO2 = (O2+ 3CO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 26. ± 1. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 82.8 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
(
3) +
= (
4)
By formula: (O2+ 3CO2) + CO2 = (O2+ 4CO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 21. ± 1. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 82.0 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
(
4) +
= (
5)
By formula: (O2+ 4CO2) + CO2 = (O2+ 5CO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 19. ± 2. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 83.7 | J/mol*K | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase |
(
5) +
= (
6)
By formula: (O2+ 5CO2) + CO2 = (O2+ 6CO2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 17. | kJ/mol | PHPMS | Hiraoka, Nakajima, et al., 1988 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 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 |
|---|---|---|---|---|---|
| rH° | 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 |
|---|---|---|---|---|---|
| rH° | 32. | kJ/mol | PDiss | Jarrold, Misev, et al., 1984 | gas phase |
+
= (
)
By formula: O2+ + N2O = (O2+ N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 56.1 | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| rH° | 45. ± 2. | kJ/mol | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=45.2 kJ/mol |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 96. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| rS° | 64.0 | J/mol*K | DT | Illies, 1988 | gas phase; «DELTA»rH(0 K)=45.2 kJ/mol |
Free energy of reaction
| rG° (kJ/mol) |
T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 37. | 200. | FA | Adams and Bohme, 1970 | gas phase; switching reaction(O2+)O2 |
(
) +
= (
2)
By formula: (O2+ N2O) + N2O = (O2+ 2N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 31. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 84. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
(
2) +
= (
3)
By formula: (O2+ 2N2O) + N2O = (O2+ 3N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 25. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 79. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
(
3) +
= (
4)
By formula: (O2+ 3N2O) + N2O = (O2+ 4N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 22. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 92. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
(
4) +
= (
5)
By formula: (O2+ 4N2O) + N2O = (O2+ 5N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 20. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 96. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
(
5) +
= (
6)
By formula: (O2+ 5N2O) + N2O = (O2+ 6N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 18. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 92. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
(
6) +
= (
7)
By formula: (O2+ 6N2O) + N2O = (O2+ 7N2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 16. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 84. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
+
= (
)
By formula: O2+ + N2 = (O2+ N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 21. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rH° | 22. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase |
| rH° | 24. | kJ/mol | PHPMS | Janik and Conway, 1967 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 72.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rS° | 66.1 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase |
| rS° | 79.1 | J/mol*K | PHPMS | Janik and Conway, 1967 | gas phase |
Free energy of reaction
| rG° (kJ/mol) |
T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 0.0 | 296. | FA | Howard, Bierbaum, et al., 1972 | gas phase |
(
) +
= (
2)
By formula: (O2+ N2) + N2 = (O2+ 2N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 19. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rH° | 18. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 79.9 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rS° | 57.7 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
(
2) +
= (
3)
By formula: (O2+ 2N2) + N2 = (O2+ 3N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 18. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rH° | 15. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 82.0 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| rS° | 50.6 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
(
3) +
= (
4)
By formula: (O2+ 3N2) + N2 = (O2+ 4N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 17. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 94.1 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Free energy of reaction
| rG° (kJ/mol) |
T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3. | 204. | HPMS | Speller and Fitaire, 1983 | gas phase |
(
4) +
= (
5)
By formula: (O2+ 4N2) + N2 = (O2+ 5N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 11.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 67.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
Free energy of reaction
| rG° (kJ/mol) |
T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3. | 184. | HPMS | Speller and Fitaire, 1983 | gas phase |
(
5) +
= (
6)
By formula: (O2+ 5N2) + N2 = (O2+ 6N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 10.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 67.4 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
6) +
= (
7)
By formula: (O2+ 6N2) + N2 = (O2+ 7N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 9.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 77.4 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
7) +
= (
8)
By formula: (O2+ 7N2) + N2 = (O2+ 8N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 8.8 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 80.8 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
8) +
= (
9)
By formula: (O2+ 8N2) + N2 = (O2+ 9N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 7.9 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 79.9 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
9) +
= (
10)
By formula: (O2+ 9N2) + N2 = (O2+ 10N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 7.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 87.0 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
10) +
= (
11)
By formula: (O2+ 10N2) + N2 = (O2+ 11N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 6. ± 1. | kJ/mol | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 84.5 | J/mol*K | PHPMS | Hiraoka and Nakajima, 1988 | gas phase |
(
) +
= (
2
)
By formula: (O2+ N2 O2) + N2 = (O2+ 2N2 O2)
Free energy of reaction
| rG° (kJ/mol) |
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 |
|---|---|---|---|---|---|
| rG° | 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 |
|---|---|---|---|---|---|
| rH° | 41. ± 5. | kJ/mol | AVG | N/A | Average of 5 out of 6 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 78.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
| rS° | 104.7 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
| rS° | 84. | J/mol*K | PHPMS | Durden, Kebarle, et al., 1969 | gas phase |
| rS° | 86.2 | J/mol*K | PHPMS | Yang and Conway, 1964 | gas phase |
Free energy of reaction
| rG° (kJ/mol) |
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 |
|---|---|---|---|---|---|
| rH° | 12. | kJ/mol | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 42.3 | J/mol*K | HPMS | Speller and Fitaire, 1983 | gas phase; Entropy change is questionable |
(
) +
= (
2)
By formula: (O2+ O2) + O2 = (O2+ 2O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 25. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| rH° | 28.7 ± 0.3 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 110. | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
| rS° | 133.0 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
(
2) +
= (
3)
By formula: (O2+ 2O2) + O2 = (O2+ 3O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 10.4 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| rH° | 10.6 ± 0.4 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 78.2 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
| rS° | 82.8 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
(
3) +
= (
4)
By formula: (O2+ 3O2) + O2 = (O2+ 4O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 9.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| rH° | 10.3 ± 0.75 | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 88.7 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
| rS° | 100. | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
(
4) +
= (
5)
By formula: (O2+ 4O2) + O2 = (O2+ 5O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 8.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| rH° | 8. ± 3. | kJ/mol | PHPMS | Conway and Janik, 1970 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 89.5 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
| rS° | 71.1 | J/mol*K | PHPMS | Conway and Janik, 1970 | gas phase |
(
5) +
= (
6)
By formula: (O2+ 5O2) + O2 = (O2+ 6O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 8. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 90.8 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
(
6) +
= (
7)
By formula: (O2+ 6O2) + O2 = (O2+ 7O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 8. ± 2. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 91.6 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase |
(
7) +
= (
8)
By formula: (O2+ 7O2) + O2 = (O2+ 8O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| rH° | 7.61 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| rS° | 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 |
|---|---|---|---|---|---|
| rH° | 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 |
| rS° | 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 |
| rG° | 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 |  e | exe | eye | Be |  e |  e | De |  e | re | Trans. |  00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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  A | 526.4 eV 2 | |||||||||
| ↳LaVilla, 1975 | ||||||||||||
| (x2 X) | 531.8 eV 3 | |||||||||||
| ↳LaVilla, 1975 | ||||||||||||
| x1 4- | 531.0 eV 1 | x1 a | 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 | e | exe | eye | Be | e | e | De | e | re | Trans. | 00 |
| (2g-) | 29.5 eV 4 | |||||||||||
| (4g-) | 27.5 eV 4 | |||||||||||
| (2u-) | 15.8 eV 5 | |||||||||||
| c 4u- | (100914) | [1545] 6 | [1.561] 7 | [6.7E-6] | [1.1620] | c b V | 51540.7 Z | |||||
| ↳LeBlanc, 1963; missing citation | ||||||||||||
(2 u) | (90000) 8 | |||||||||||
| B 2g- | 66719 | 1156 9 | 22 9 | (1.298) 10 | ||||||||
| State | Te | e | exe | eye | Be | e | e | De | e | re | Trans. | 00 |
| D (2g) | 62730 | 920 11 | (12) | (1.33) 12 | ||||||||
C (2 u) | (53620) | (900) 13 | ||||||||||
| b 4g- | 49552 | 1196.77 Z | 17.09 14 | 1.28729 15 | 0.02206 | 5.81E-6 | 1.85E-7 | 1.27964 | b 16 a 17 V | 16666.74 Z | ||
| ↳Nevin, 1938; Nevin and Murphy, 1941; Weniger, 1962 | ||||||||||||
| b' (4g) | (48000) 18 | b'  a | ||||||||||
| ↳Moselev, Tadjeddine, et al., 1976 | ||||||||||||
| A 2u | 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 X 23 R | 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 | e | exe | eye | Be | e | e | De | e | re | Trans. | 00 |
| a 4ui | 32964 24 | 1035.69 Z | 10.39 14 | 1.10466 | 0.01575 25 | 4.88E-6 25 | 1.38138 | |||||
| X 2g | 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 g electron from the ground state of O2. 32 |
| 5 | Removal of a 2u electron from the ground state of O2. 33 |
| 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  = 0.44 cm-1. Only bands having v'=0 occur in emission;
predissociation Edqvist, Lindholm, et al., 1970, Schopman and Locht, 1974. |
| 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 2u sate of
configuration ... u3g2 Dixon and Hull, 1969. |
| 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(1g) Jonathan and Morris, 1971, Jonathan, Morris, et al., 1974; tentatively
identified as convergence limit of a fragmentary Rydberg series Lindholm, 1968. Predissociation Schopman and Locht, 1974. |
| 12 | Franck-Condon factor analysis of the photoelectron spectrum Jonathan, Morris, et al., 1974. |
| 13 | Only observed in the photoelectron spectrum of O2(1g) Jonathan, Morris, et al., 1974;
vibrational numbering uncertain. |
| 14 | RKR potential curves Krupenie, 1972, Albritton, Schmeltekopf, et al., 1979. Calculated Franck-Condon factors for ionizing transitions
from X 3g-, a 1g,
b 1g+ Halmann and Laulicht, 1965, Asundi and Ramachandrarao, 1969, Krupenie, 1972, Albritton, Schmeltekopf, et al., 1979, and for recombination
transitions from X 2g and a 4u
to B 3u- Krupenie, 1972. Halmann and Laulicht, 1965 give also results for
16O18O and 18O2; note, however, that their calculations for transitions to X
2g are based on the previously accepted but now abandoned vibrational numbering for
the ground state of O2+ and lead to disagreement with observed photo-electron intensities Spohr and Puttkamer, 1967.
Experimental Franck-Condon factors from photoelectron spectra Edqvist, Lindholm, et al., 1970, Gardner and Samson, 1974, Gardner and Samson, 1975. |
| 15 | Spin splitting constant =0.1487 cm-1. |
| 16 | Radiative lifetime  = 1.15  s Jeunehomme, 1966, Fink and Welge, 1968, Borst and Zipf, 1970, Fairbairn, 1974. |
| 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' 8 Albritton, Harrop, et al., 1973. Additional Bv values up to v=15 are listed by Colbourn and Douglas, 1977 who also
give  -type doubling constants. |
| 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 = 0.69 s Jeunehomme, 1966, Fink and Welge, 1968. |
| 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 4g-) of Tanaka and Takamine's Rydberg
series with I.P (O2), v00(ba), and the constants for a, X. |
| 25 | Constants representing v=0,1,2; e = -0.095~E-6, v=0,1,2 Nevin, 1938. For v = 3...6, see
Nevin and Murphy, 1941, Weniger, 1962. Slightly different constants in Veseth, 1975. |
| 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 v10 Albritton, Harrop, et al., 1973. Selected Bv values have been reevaluated from more
precise measurements by Colbourn and Douglas, 1977 who also give improved -type doubling constants. |
| 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 4g- and
two sharp peaks (I.P. 40.33 and 40.40 eV) corresponding to 2g-. |
| 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.,
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Hiraoka, K.; Nakajima, G.; Shoda, S.,
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Illies, 1988
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Conway and Janik, 1970
Conway, D.C.; Janik, G.S.,
Determination of the Bond Energies for the Series O2 - O2+ through O2 - O10+,
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Meot-Ner (Mautner) and Field, 1977
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Formation and Reactions of O2+.CO2, O2+.H2O and O2+(CO2)2 Ions,
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Durden, D.A.; Kebarle, P.; Good, A.,
Thermal Ion-Molecule Reaction Rate Constants at Pressures up to 10 torr with a Pulsed Mass Spectrometer. Reactions in Methane, Krypton, and Oxygen,
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Yang and Conway, 1964
Yang, J.H.; Conway, D.C.,
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Rakshit and Warneck, 1980
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A Drift Chamber Study of the Formation of Water Cluster Ions in Oxygen,
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Howard, Bierbaum, et al., 1972
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Adams and Bohme, 1970
Adams, N.G.; Bohme, D.,
Flowing Afterglow Studies of Formation and Reactions of Cluster Ions of O2+, O2-, and O-,
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Hiraoka and Nakajima, 1988
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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,
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Speller and Fitaire, 1983
Speller, C.V.; Fitaire, M.,
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Janik and Conway, 1967
Janik, G.S.; Conway, D.C.,
Bonding in Heteromolecular Ion Clusters. N2O2+,
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Hiraoka, Fujimaki, et al., 1994
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Jarrold, Misev, et al., 1984
Jarrold, M.F.; Misev, L.; Bowers, M.T.,
Charge Transfer Half - Collisions: Photodissociation of the Kr.O2+ cluster Ion with Resolution of the Product Vibrational States,
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Krupenie, 1972
Krupenie, P.H.,
The spectrum of molecular oxygen,
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Beebe, Thulstrup, et al., 1976
Beebe, N.H.F.; Thulstrup, E.W.; Andersen, A.,
Configuration interaction calculations of low-lying electronic states of O2,O2+, and O22+,
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LaVilla, 1975
LaVilla, R.E.,
The O K«alpha» and C K«alpha» emission and O K absorption spectra from O2 and CO2. IV,
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Siegbahn, K.; Nordling, C.; Johansson, G.; Hedman, J.; Heden, P.F.; Hamrin, k.; Gelius, U.; Bergmark, T.; Werme, L.O.; Manne, R.; Baer,
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Jonathan, Morris, et al., 1974
Jonathan, N.; Morris, A.; Okuda, M.; Ross, K.J.; Smith, D.J.,
Vacuum ultraviolet photoelectron spectroscopy of transient species,
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LeBlanc, 1963
LeBlanc, F.J.,
Electronic states of Hopfield's oxygen emission bands,
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Nevin, 1938
Nevin, T.E.,
Rotational analysis of the first negative band spectrum of oxygen,
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Nevin and Murphy, 1941
Nevin, T.E.; Murphy, T.,
Analysis of the (0,3) band of the first negative system of the 0g+ molecule,
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Weniger, 1962
Weniger, S.,
Etude du spectre de la molecule d'oxygene ionisee dans le proche infra-rouge,
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Moselev, Tadjeddine, et al., 1976
Moselev, J.T.; Tadjeddine, M.; Durup, J.; Ozenne, J.-B.; Pernot, C.; Tabche-Fouhaille, A.,
High resolution threshold photofragment spectroscopy of O2+(a4«PI»u --> f4«PI»g),
Phys. Rev. Lett., 1976, 37, 891. [all data]
Bozoky, 1937
Bozoky, L.v.,
Rotationsanalyse von O2+-, 2«PI»-->2«PI»-banden,
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Feast, 1950
Feast, M.W.,
New O2+ second negative bands: a note on O3 and O«PI» emission spectra,
Proc. Phys. Soc. London Sect. A, 1950, 63, 557. [all data]
Bhale and Rao, 1968
Bhale, G.L.; Rao, P.R.,
Isotope shifts in the second negative bands of O2+,
Proc. Indian Acad. Sci., 1968, A67, 350. [all data]
Albritton, Harrop, et al., 1973
Albritton, D.L.; Harrop, W.J.; Schmeltekopf, A.L.; Zare, R.N.,
Rotational analysis of the A2«PI»u-X2«PI»g second negative band system of O2+,
J. Mol. Spectrosc., 1973, 46, 89. [all data]
Colbourn and Douglas, 1977
Colbourn, E.A.; Douglas, A.E.,
A remeasurement of some constants of the O2+ and N2+ molecules,
J. Mol. Spectrosc., 1977, 65, 332. [all data]
Bhale and Narasimham, 1976
Bhale, G.L.; Narasimham, N.A.,
Reinvestigation of the second negative (A2«PI»u-X2«PI»g) band system of O2+,
Pramana, 1976, 7, 324. [all data]
Edqvist, Lindholm, et al., 1970
Edqvist, O.; Lindholm, E.; Selin, L.E.; Asbrink, L.,
On the photoelectron spectrum of O2,
Physica Scripta, 1970, 1, 25. [all data]
Schopman and Locht, 1974
Schopman, J.; Locht, R.,
The observation of predissociations in the oxygen molecular ion by low-energy electron impact,
Chem. Phys. Lett., 1974, 26, 596. [all data]
Gardner and Samson, 1975
Gardner, J.L.; Samson, J.A.R.,
Photoion and photoelectron spectroscopy of oxygen,
J. Chem. Phys., 1975, 62, 4460. [all data]
Dixon and Hull, 1969
Dixon, R.N.; Hull, S.E.,
The photo-ionization of «pi»-electrons from O2,
Chem. Phys. Lett., 1969, 3, 367. [all data]
Doolittle, Schoen, et al., 1968
Doolittle, P.H.; Schoen, R.I.; Schubert, K.E.,
Dissociative photoionization of O2,
J. Chem. Phys., 1968, 49, 5108. [all data]
Stockdale and Deleanu, 1974
Stockdale, J.A.D.; Deleanu, L.,
Vibrational structure in kinetic energy spectra of O+ ions from electron impact dissociative ionization of O2: predissociation of the B2«SIGMA»g- state of O2+,
Chem. Phys. Lett., 1974, 28, 588. [all data]
Jonathan and Morris, 1971
Jonathan, N.; Morris, A.,
High resolution vacuum ultraviolet photoelectron spectra of transient species: O2(1«DELTA»g) and previously unobserved states of O2+,
J. Chem. Phys., 1971, 54, 11, 4954-4955. [all data]
Lindholm, 1968
Lindholm, E.,
Rydberg series in small molecules. IV. Rydberg series in O2,
Ark. Fys., 1968, 40, 9, 117-124. [all data]
Albritton, Schmeltekopf, et al., 1979
Albritton; Schmeltekopf; Zare,
Diatomic Intensity Factors, to be published, cited in Huber and Herzberg, 1979, Wiley, 1979, 1. [all data]
Halmann and Laulicht, 1965
Halmann, M.; Laulicht, I.,
Isotope effects on vibrational transition probabilities. III. Ionization of isotopic H2, N2,,O2, NO, CO, and HCl molecules,
J. Chem. Phys., 1965, 43, 1503. [all data]
Asundi and Ramachandrarao, 1969
Asundi, R.K.; Ramachandrarao, Ch.V.S.,
Revised Franck-Condon factors for the ionization transition of O2 and the second negative band system of O2+,
Chem. Phys. Lett., 1969, 4, 89. [all data]
Spohr and Puttkamer, 1967
Spohr, R.; Puttkamer, E.v.,
Energiemessung von Photoelektronen und Franck-Condon-Faktoren der Schwingungsubergange einiger Molekulionen,
Z. Naturforsch., 1967, 22a, 705. [all data]
Gardner and Samson, 1974
Gardner, J.L.; Samson, J.A.R.,
Vibrational intensity distributions for continuum photoionization of oxygen,
J. Chem. Phys., 1974, 61, 5472. [all data]
Jeunehomme, 1966
Jeunehomme, M.,
Oscillator strengths of the negative systems of oxygen,
J. Chem. Phys., 1966, 44, 4253. [all data]
Fink and Welge, 1968
Fink, E.H.; Welge, K.H.,
Lebensdauern und Loschquerschnitte elektronisch angeregter Zustande von N2O+, NO, O2+, CO+ und CO,
Z. Naturforsch. A, 1968, 23, 358. [all data]
Borst and Zipf, 1970
Borst, W.L.; Zipf, E.C.,
Excitation of O2+ first negative bands by electron impact on O2,
Phys. Rev. A: Gen. Phys., 1970, 1, 1410. [all data]
Fairbairn, 1974
Fairbairn, A.R.,
Radiative lifetime of O2+,
J. Chem. Phys., 1974, 60, 521. [all data]
Rao, 1963
Rao, P.S.R.,
Vibrational intensities of the O2+ (first negative) bands,
Proc. Phys. Soc. London, 1963, 81, 240. [all data]
Nicolet and Dogniaux, 1950
Nicolet, M.; Dogniaux, R.,
Nouvelles suggestions au sujet de l'interpretation du spectre des aurores,
J. Geophys. Res., 1950, 55, 21. [all data]
Vegard, 1950
Vegard, L.,
Nouveaux resultats importants dans l'etude du spectre des aurores boreales et la physique de l'ionosphere,
Ann. Geophys., 1950, 6, 157. [all data]
Dahlstrom and Hunten, 1951
Dahlstrom, C.E.; Hunten, D.M.,
O2+ and H in the auroral spectrum,
Phys. Rev., 1951, 84, 378. [all data]
Rao, 1964
Rao, P.S.R.,
A comparison of intensities of the O2+ (first negative) bands excited in a hollow-cathode discharge and in aurorae,
Nature (London), 1964, 201, 1112. [all data]
Nishimura, 1968
Nishimura, H.,
Excitation of N2+, O2+ and CO2+ band of electron impact,
J. Phys. Soc. Jpn., 1968, 24, 130. [all data]
Herman, Ferguson, et al., 1961
Herman, L.; Ferguson, H.I.S.; Nicholls, R.W.,
Excitation of the first negative system of O2+ by a proton beam in air and oxygen,
Can. J. Phys., 1961, 39, 476. [all data]
Dufay, Druetta, et al., 1965
Dufay, M.; Druetta, M.; Eidelsberg, M.,
Sur la luminescence de l'oxygene excitee par choc de particules accelerees sous 500 keV,
C.R. Acad. Sci. Paris, 1965, 260, 1123. [all data]
Zare, 1972
Zare, R.N.,
Rotational line strengths: the O2+b4«SIGMA»g- - a4«PI»u band system
in Molecular Spectroscopy: Modern Research, Rao,K.N.; Mathews,C.W., ed(s)., Academic Press, New York, 1972, 207-221. [all data]
Bhale, 1972
Bhale, G.L.,
Spin-orbit coupling constant in the A2«PI»u state of O2+,
J. Mol. Spectrosc., 1972, 43, 171. [all data]
Raftery and Richards, 1975
Raftery, J.; Richards, W.G.,
On the variation of the spin-orbit coupling in O2+,
J. Chem. Phys., 1975, 62, 3184. [all data]
Branscomb, 1950
Branscomb, L.M.,
Anomalous molecular rotation and the temperature of the upper atmosphere,
Phys. Rev., 1950, 79, 619. [all data]
Albritton, Schmeltekopf, et al., 1969
Albritton, D.L.; Schmeltekopf, A.L.; Zare, R.N.,
Evidence in support of the vibrational renumbering of the O2+ 2«pi»g ground state,
J. Chem. Phys., 1969, 51, 1667. [all data]
Kovacs and Weniger, 1962
Kovacs, I.; Weniger, S.,
Sur l'interpretation de la separation anomale des composantes du multiplet de l'etat 4«PI» de la molecule d'oxygene ionisee,
J. Phys. Radium, 1962, 23, 377. [all data]
Budo and Kovacs, 1955
Budo, A.; Kovacs, I.,
Uber den 4«PI»-Zustand des O2+-Molekuls,
Acta Phys. Acad. Sci. Hung., 1955, 4, 273. [all data]
Veseth, 1975
Veseth, L.,
Fine structure of 4«PI» states in diatomic molecules,
Phys. Scr., 1975, 12, 125. [all data]
Dorman and Morrison, 1963
Dorman, F.H.; Morrison, J.D.,
Ionization potentials of doubly charged oxygen and nitrogen,
J. Chem. Phys., 1963, 39, 1906. [all data]
Daly and Powell, 1967
Daly, N.R.; Powell, R.E.,
Electron collisions in oxygen,
Proc. Phys. Soc. (London), 1967, 90, 629. [all data]
Gardner and Samson, 1975, 2
Gardner, J.L.; Samson, J.A.R.,
Vibrational structure in the photoelectron spectrum of O2+2«SIGMA»g-(«sigma»g2s),
Chem. Phys. Lett., 1975, 32, 315. [all data]
Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G.,
Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules, Van Nostrand Reinhold Company, New York, 1979, 716. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, Constants of diatomic molecules, References
- Symbols used in this document:
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