Oxygen anion
- Formula: O2-
- Molecular weight: 31.9993
- IUPAC Standard InChIKey: OUUQCZGPVNCOIJ-UHFFFAOYSA-M
- CAS Registry Number: 11062-77-4
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, 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 as indicated in comments:
B - John E. Bartmess
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -43.22 ± 0.59 | kJ/mol | R-EA | Ervin, Anusiewicz, et al., 2003 | B |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 209.59 | J/mol*K | Review | Chase, 1998 | Data last reviewed in September, 1977 |
Reaction thermochemistry data
Go To: Top, Gas phase 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 as indicated in comments:
B - John E. Bartmess
M - 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- + O2 = (O2- • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 48. ± 20. | kJ/mol | AVG | N/A | Average of 5 out of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 102. | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
ΔrS° | 130. | J/mol*K | PHPMS | Conway and Nesbit, 1968 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 13. ± 4.6 | kJ/mol | TDAs | Hiraoka, 1888 | gas phase; see also Sherwood, Hanold, et al., 1996. Aquino, Taylor, et al., 2001 calns indicate rectangular anion; B |
ΔrG° | 23. ± 4.2 | kJ/mol | IMRE | Payzant J.D. and Kebarle, 1972 | gas phase; B |
ΔrG° | 13. ± 4.2 | kJ/mol | IMRE | Pack and Phelps, 1971 | gas phase; B |
ΔrG° | 16.7 ± 2.1 | kJ/mol | IMRE | Parkes, 1971 | gas phase; B |
ΔrG° | 16. ± 4.2 | kJ/mol | TDAs | Conway and Nesbit, 1968 | gas phase; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
15. | 300. | DT | Pack and Phelps, 1971 | gas phase; M |
By formula: O2- + CO2 = (O2- • CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 79.50 ± 0.84 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B,M |
ΔrH° | 74.1 ± 7.5 | kJ/mol | IMRE | Pack and Phelps, 1966 | gas phase; Corrected with more recent EA(O2) = 0.45 eV; B,M |
ΔrH° | 106. ± 19. | kJ/mol | PDis | Vestal and Mauclaire, 1977 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 101. | J/mol*K | PHPMS | Hiraoka and Yamabe, 1992 | gas phase; M |
ΔrS° | 88. | J/mol*K | DT | Pack and Phelps, 1966 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 49.0 ± 8.4 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B |
ΔrG° | 51.0 ± 5.0 | kJ/mol | IMRE | Pack and Phelps, 1966 | gas phase; Corrected with more recent EA(O2) = 0.45 eV; B |
ΔrG° | 41.8 | kJ/mol | FA | Adams and Bohme, 1970 | gas phase; switching reaction(O2-)O2; Conway and Nesbit, 1968; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
54.0 | 296. | FA | Fehsenfeld and Ferguson, 1974 | gas phase; switching reaction(O2-)H2O; Arshadi and Kebarle, 1970; M |
By formula: (O2- • H2O) + H2O = (O2- • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 72.0 ± 4.2 | kJ/mol | TDAs | Arshadi and Kebarle, 1970 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 105. | J/mol*K | PHPMS | Arshadi and Kebarle, 1970 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 40.6 | kJ/mol | TDAs | Arshadi and Kebarle, 1970 | gas phase; B |
ΔrG° | 36. ± 4.2 | kJ/mol | IMRE | Payzant J.D. and Kebarle, 1972 | gas phase; B |
ΔrG° | 41. ± 4.2 | kJ/mol | IMRE | Pack and Phelps, 1971 | gas phase; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
35. | 300. | PHPMS | Payzant J.D. and Kebarle, 1972 | gas phase; M |
By formula: (O2- • 2H2O) + H2O = (O2- • 3H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 64.4 ± 4.2 | kJ/mol | TDAs | Arshadi and Kebarle, 1970 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 118. | J/mol*K | PHPMS | Arshadi and Kebarle, 1970 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 29.3 | kJ/mol | TDAs | Arshadi and Kebarle, 1970 | gas phase; B |
ΔrG° | 26. ± 8.4 | kJ/mol | TDAs | Kebarle, Arshadi, et al., 1968 | gas phase; B,M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
22. | 296. | FA | Fehsenfeld and Ferguson, 1974 | gas phase; M |
30. | 300. | PHPMS | Payzant J.D. and Kebarle, 1972 | gas phase; M |
By formula: O2- + H2O = (O2- • H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 93.3 ± 6.3 | kJ/mol | N/A | Luong, Clements, et al., 2001 | gas phase; Vertical Detachment Energy: 2.03±0.05 eV.; B |
ΔrH° | 77.0 ± 8.4 | kJ/mol | TDAs | Arshadi and Kebarle, 1970 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84.1 | J/mol*K | PHPMS | Arshadi and Kebarle, 1970 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 52.3 ± 8.4 | kJ/mol | TDAs | Arshadi and Kebarle, 1970 | gas phase; B |
ΔrG° | 49.0 ± 8.4 | kJ/mol | IMRE | Parkes, 1971 | gas phase; B |
By formula: (O2- • 7N2 • O2) + N2 = (O2- • 8N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
ΔrH° | 6.40 | kJ/mol | PHPMS | Hiraoka, 1988, 2 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 74.9 | J/mol*K | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
ΔrS° | 75.3 | J/mol*K | N/A | Hiraoka, 1988, 2 | gas phase; Entropy change calculated or estimated; M |
By formula: (O2- • 2N2O) + N2O = (O2- • 3N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 26.8 ± 0.84 | kJ/mol | TDAs | Hiraoka, Fujimaki, et al., 1994 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -3. ± 4.2 | kJ/mol | TDAs | Hiraoka, Fujimaki, et al., 1994 | gas phase; B |
By formula: (O2- • 3N2O) + N2O = (O2- • 4N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 23.8 ± 0.84 | kJ/mol | TDAs | Hiraoka, Fujimaki, et al., 1994 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -6.3 ± 4.2 | kJ/mol | TDAs | Hiraoka, Fujimaki, et al., 1994 | gas phase; B |
By formula: (O2- • 4N2O) + N2O = (O2- • 5N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 22.2 ± 0.84 | kJ/mol | TDAs | Hiraoka, Fujimaki, et al., 1994 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -7.9 ± 4.2 | kJ/mol | TDAs | Hiraoka, Fujimaki, et al., 1994 | gas phase; B |
By formula: (O2- • 5N2O) + N2O = (O2- • 6N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 20.9 ± 0.84 | kJ/mol | TDAs | Hiraoka, Fujimaki, et al., 1994 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -9.2 ± 4.2 | kJ/mol | TDAs | Hiraoka, Fujimaki, et al., 1994 | gas phase; B |
By formula: (O2- • N2O) + N2O = (O2- • 2N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 36.4 ± 0.84 | kJ/mol | TDAs | Hiraoka, Fujimaki, et al., 1994 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 3. ± 4.2 | kJ/mol | TDAs | Hiraoka, Fujimaki, et al., 1994 | gas phase; B |
By formula: (O2- • 2CH4O) + CH4O = (O2- • 3CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 56.5 ± 2.9 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 117. | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 21.8 ± 1.3 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B |
By formula: (O2- • 2C2H3N) + C2H3N = (O2- • 3C2H3N)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 49.8 ± 2.5 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 103. | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 18.8 ± 0.84 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B |
By formula: O2- + N2O = (O2- • N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | <56.90 | kJ/mol | IMRB | Adams and Bohme, 1970 | gas phase; N2O..O2- + O2 -> O4- + N2O; B |
ΔrH° | 37. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase; M |
By formula: (O2- • 3C2H3N) + C2H3N = (O2- • 4C2H3N)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 39.7 ± 2.1 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 93.7 | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 11.7 ± 0.42 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B |
By formula: (O2- • CH4O) + CH4O = (O2- • 2CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 64.9 ± 3.3 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 104. | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 33.9 ± 1.7 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B |
By formula: (O2- • C2H3N) + C2H3N = (O2- • 2C2H3N)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 59.4 ± 2.9 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92.0 | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 32.2 ± 1.7 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B |
By formula: (O2- • 2CO2) + CO2 = (O2- • 3CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 26. ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 96.2 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1992 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -3. ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B |
By formula: (O2- • 3CO2) + CO2 = (O2- • 4CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 20. ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 78.2 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1992 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -3. ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B |
By formula: (O2- • 4CO2) + CO2 = (O2- • 5CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19. ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 77.0 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1992 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -4.6 ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B |
By formula: (O2- • 5CO2) + CO2 = (O2- • 6CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 18. ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 79.5 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1992 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -6.3 ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B |
By formula: (O2- • 6CO2) + CO2 = (O2- • 7CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 17. ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 80.8 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1992 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | -7.5 ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B |
By formula: (O2- • CO2) + CO2 = (O2- • 2CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 27.6 ± 0.84 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 76.1 | J/mol*K | PHPMS | Hiraoka and Yamabe, 1992 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 4.6 ± 4.2 | kJ/mol | TDAs | Hiraoka and Yamabe, 1992 | gas phase; B |
By formula: O2- + CH4O = (O2- • CH4O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 79.91 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 91.6 | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 52.30 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B |
By formula: O2- + C2H3N = (O2- • C2H3N)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 68.62 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 72.8 | J/mol*K | PHPMS | Yamdagni, Payzant, et al., 1973 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 46.86 | kJ/mol | TDAs | Yamdagni, Payzant, et al., 1973 | gas phase; B |
By formula: (O2- • 6O2) + O2 = (O2- • 7O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.86 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 67. | J/mol*K | N/A | Hiraoka, 1988 | gas phase; Entropy change calculated or estimated; M |
By formula: O2- + N2 = (O2- • N2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 25. ± 4.2 | kJ/mol | N/A | Posey and Johnson, 1988 | gas phase; B |
ΔrH° | <56.90 | kJ/mol | IMRB | Adams and Bohme, 1970 | gas phase; N2..O2- + O2 -> O4-; B |
By formula: O2- + CO = (O2- • CO)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | <56.90 | kJ/mol | IMRB | Adams and Bohme, 1970 | gas phase; CO..O2- + O2 -> O4- + CO. G3MP2B3 calculations indicate a HOF(A-) ca. -38 kcal/mol; B |
By formula: (O2- • 2N2 • O2) + N2 = (O2- • 3N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 10.3 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 76.6 | J/mol*K | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
By formula: (O2- • 3N2 • O2) + N2 = (O2- • 4N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 9.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 78.2 | J/mol*K | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
By formula: (O2- • 4N2 • O2) + N2 = (O2- • 5N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 8.1 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 81.6 | J/mol*K | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
By formula: (O2- • 5N2 • O2) + N2 = (O2- • 6N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.6 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 81.6 | J/mol*K | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
By formula: (O2- • 6N2 • O2) + N2 = (O2- • 7N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7.1 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 78.7 | J/mol*K | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
By formula: (O2- • N2 • O2) + N2 = (O2- • 2N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.7 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 74.9 | J/mol*K | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
By formula: (O2- • 4294967295O) + O = O2-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 400.7 | kJ/mol | N/A | Ervin, Anusiewicz, et al., 2003 | gas phase; B |
ΔrH° | 401. ± 4.2 | kJ/mol | Ther | Travers, Cowles, et al., 1989 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1476.9 ± 3.0 | kJ/mol | D-EA | Travers, Cowles, et al., 1989 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1450.5 ± 3.4 | kJ/mol | H-TS | Travers, Cowles, et al., 1989 | gas phase; B |
By formula: (O2- • O2) + N2 = (O2- • N2 • O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 12.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 69.0 | J/mol*K | PHPMS | Hiraoka, 1988, 2 | gas phase; M |
By formula: (O2- • 3H2O) + H2O = (O2- • 4H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrG° | 18. ± 8.4 | kJ/mol | TDAs | Kebarle, Arshadi, et al., 1968 | gas phase; B,M |
ΔrG° | 14. | kJ/mol | PHPMS | Arshadi and Kebarle, 1970 | gas phase; M |
By formula: (O2- • 2O2) + O2 = (O2- • 3O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 10.0 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 89.1 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • 3O2) + O2 = (O2- • 4O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 7. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 64.4 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • 4O2) + O2 = (O2- • 5O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.4 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 64.4 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • 5O2) + O2 = (O2- • 6O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6. ± 1. | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 67.8 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • O2) + O2 = (O2- • 2O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 10.5 ± 0.8 | kJ/mol | PHPMS | Hiraoka, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 87.4 | J/mol*K | PHPMS | Hiraoka, 1988 | gas phase; M |
By formula: (O2- • H2O) + CO2 = (O2- • CO2 • H2O)
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
34. | 296. | FA | Fehsenfeld and Ferguson, 1974 | gas phase; switching reaction(O2-)2H2O; Arshadi and Kebarle, 1970; M |
+ = C5H5NO2-
By formula: O2- + C5H5N = C5H5NO2-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 90.8 ± 9.6 | kJ/mol | N/A | Le Barbu, Schiedt, et al., 2002 | gas phase; Affinity is difference in EAs of lesser solvated species; B |
+ = C6H6O2-
By formula: O2- + C6H6 = C6H6O2-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 59.0 ± 9.6 | kJ/mol | N/A | Le Barbu, Schiedt, et al., 2002 | gas phase; Affinity is difference in EAs of lesser solvated species; B |
+ = C10H8O2-
By formula: O2- + C10H8 = C10H8O2-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 92.5 ± 9.6 | kJ/mol | N/A | Le Barbu, Schiedt, et al., 2002 | gas phase; Affinity is difference in EAs of lesser solvated species; B |
By formula: O2- + Ar = (O2- • Ar)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 6.95 | kJ/mol | N/A | Bowen and Eaton, 1988 | gas phase; Bound by 70 meV relative to EA(O2-.); B |
By formula: (O2- • 4H2O) + H2O = (O2- • 5H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrG° | 14. ± 8.4 | kJ/mol | TDAs | Kebarle, Arshadi, et al., 1968 | gas phase; B |
Constants of diatomic molecules
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry 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 | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
b | 118540 | 1290 1 | 14.27 eV 2 | |||||||||
↳Sanche and Schulz, 1972; Schulz, 1973 | ||||||||||||
a (4Πu) | 97800 | 1044 | 10 3 | 11.68 eV 4 | ||||||||
↳Sanche and Schulz, 1972; Schulz, 1973 | ||||||||||||
Additional resonances in the electron transmission current at 8-11 eV. 2 | ||||||||||||
↳Sanche and Schulz, 1972; Schulz, 1973 | ||||||||||||
Several bound excited states predicted by theoretical calculations Krauss, Neumann, et al., 1973. | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
A (2Πu) | (25300) | (574.5) 5 | (7.1) 5 | A ↔ X 6 | (25000) 7 | |||||||
↳Rolfe, 1964; Ikezawa and Rolfe, 1973 | ||||||||||||
Photodetachment cross sections 6700 - 4600 Å (14900 - 21800 cm-1). | ||||||||||||
↳Cosby, Ling, et al., 1976 | ||||||||||||
X 2Πgi | 0 8 | 1090 9 | 8.1 9 | 1.35 10 11 | ||||||||
↳Creighton and Lippincott, 1964; Holzer, Murphy, et al., 1968 | ||||||||||||
EPR sp. 12 | ||||||||||||
↳Kanzig and Cohen, 1959; Zeller and Kanzig, 1967 |
Notes
1 | Short progression of resonances in electron transmission. 15 |
2 | Energy relative to X 3Σg-(v=0) of neutral O2. |
3 | Long progression of resonances in electron transmission. 16 |
4 | Extrapo1ated energy of v=0 relative to X 3Σg-(v=0) of neutral O2. |
5 | Absorption in KBr, vibrational numbering uncertain Ikezawa and Rolfe, 1973. |
6 | Observed in alkali halide crystals at 4.2 and 2 K. |
7 | Estimated v00 for the free O2- ion, by extrapolation from data for various host crystals Holzer, Murphy, et al., 1968. |
8 | A = -160 cm-1 103. |
9 | From electron scattering cross sections for gaseous O2 Boness and Schulz, 1970, Linder and Schmidt, 1971; similar measurements by Gray, Haselton, et al., 1972 suggest ωe = 1140 Gray, Haselton, et al., 1972, ωexe = 12 Gray, Haselton, et al., 1972. A direct measurement of ΔG"(1/2) in the photodetachment spectrum Celotta, Bennett, et al., 1972 gives ΔG"(1/2) ~ 1090 cm-1 Celotta, Bennett, et al., 1972, in agreement with extrapolations from Raman frequencies in alkali halide crystals Holzer, Murphy, et al., 1968. Anharmonicities derived from low-temperature fluorescence spectra (see 6) are approximately 8.7 Ikezawa and Rolfe, 1973. |
10 | From a Franck-Condon factor analysis of the photodetachment spectrum Celotta, Bennett, et al., 1972 and a similar evaluation by Parlant and Fiquet-Fayard, 1976 of the electron scattering data of Linder and Schmidt, 1971. |
11 | Raman sp. 17 |
12 | In alkali halide crystals. |
13 | From D00(O2) and the electron affinities of O(1.462 eV) and O2. |
14 | From the O2- photodetachment spectrum Celotta, Bennett, et al., 1972; see also Pack and Phelps, 1966, 2. From endothermic negative-ion charge-transfer reactions Tiernan, Hughes, et al., 1971 obtain I.P. ≥ 0.45 ± 0.1 eV. The theoretical value is 0.42eV Zemke, Das, et al., 1972. |
15 | "Band b". Suggested "grandparent" state b 4Σg- of O2+. |
16 | "Band a". The negative ion state results from the addition of two Rydberg electrons in the 3sσg orbital to the O2+ core in the a 4Πu state ("grandparent"). |
17 | In alkali ha1ide crystals and in solid KO2 and NaO2. |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry 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.
Ervin, Anusiewicz, et al., 2003
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A Determination of the Stabilities of O2+(O2)n and O2-(O2)n with n = 1 - 8 from Measurements of the Gas-Phase Ion Equilibria,
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A Determination of the Stability of O2+(O2)n and O2-(O2)n with n=1-8 from Measurements of the Gas Phase Ion Equilibria,
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Kinetics and Reactions Leading to O2-(H2O)n in Moist Oxygen,
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Hydration of Oxygen Negative Ions,
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Parkes, 1971
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Electron Attachment and Negative Ion-Molecule Reactions in Pure O2,
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Formation of the Chelate Bonds in the Cluster O2(-)(CO2)n, CO3(-)(CO2)n, and NO2(-)(CO2)n,
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Photodissociaton of negative ions formed in CO2 and CO2/O2 Mixtures,
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Adams and Bohme, 1970
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Flowing Afterglow Studies of Formation and Reactions of Cluster Ions of O2+, O2-, and O-,
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Arshadi and Kebarle, 1970
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Hydration of OH- and O2- in the Gas Phase. Comparative Solvation of OH- by Water and the Hydrogen Halides. Effect of Acidity,
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Hydration of Negative Ions in the Gas Phase,
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Luong, A.K.; Clements, T.G.; Resat, M.S.; Continetti, R.E.,
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Determination of the Stabilities of O3-(N2)n, O3-(O2)n, and O4-(N2)n from Measurements of the Gas Phase Equilibria,
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Solvation of Cl- and O2- with H2O, CH3OH, and CH3CN in the gas phase,
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Electron transmission spectroscopy: core-excited resonances in diatomic molecules,
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Schulz, 1973
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Resonances in electron impact on diatomic molecules,
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Krauss, Neumann, et al., 1973
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Rolfe, 1964
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Ikezawa and Rolfe, 1973
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Zero-phonon transitions in O2-, S2-, and Se2-, and SeS- molecules dissolved in alkali halide crystals,
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Cosby, Ling, et al., 1976
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Holzer, Murphy, et al., 1968
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Zeller and Kanzig, 1967
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Linder and Schmidt, 1971
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Gray, Haselton, et al., 1972
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Celotta, Bennett, et al., 1972
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Parlant and Fiquet-Fayard, 1976
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Pack, J.L.; Phelps, A.V.,
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Tiernan, Hughes, et al., 1971
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Zemke, Das, et al., 1972
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Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Constants of diatomic molecules, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) T Temperature ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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