Oxygen cation

Formula: O₂⁺
Molecular weight: 31.9983
IUPAC Standard InChI: InChI=1S/O2/c1-2/q+1
IUPAC Standard InChIKey: KMHJKRGRIJONSV-UHFFFAOYSA-N
CAS Registry Number: 12185-07-8
Chemical structure:
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Gas phase thermochemistry data

Go To: Top, Reaction thermochemistry data, References, Notes

Quantity	Value	Units	Method	Reference	Comment
S°_{gas,1 bar}	49.288	cal/mol*K	Review	Chase, 1998	Data last reviewed in September, 1977

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, References, Notes

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

Oxygen cation + = ( • )

By formula: O₂⁺ + CO₂ = (O₂⁺ • CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.8 ± 0.9	kcal/mol	AVG	N/A	Average of 4 out of 6 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	17.5	cal/mol*K	PHPMS	Hiraoka, Nakajima, et al., 1988	gas phase
Δ_rS°	18.9	cal/mol*K	DT	Illies, 1988	gas phase; Δ_rH(0 K)=9.80 kcal/mol
Δ_rS°	20.7	cal/mol*K	N/A	Dotan, Davidson, et al., 1978	gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970
Δ_rS°	20.	cal/mol*K	N/A	Meot-Ner (Mautner) and Field, 1977	gas phase; Entropy change calculated or estimated, DG>, Δ_rH>
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.4	kcal/mol	DT	Rakshit and Warneck, 1981	gas phase
Δ_rG°	4.3	kcal/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

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
9.4	600.	PHPMS	Meot-Ner (Mautner) and Field, 1977	gas phase; Entropy change calculated or estimated, DG>, Δ_rH>

Oxygen cation + = ( • )

By formula: O₂⁺ + O₂ = (O₂⁺ • O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10. ± 1.	kcal/mol	AVG	N/A	Average of 5 out of 6 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	18.8	cal/mol*K	PHPMS	Hiraoka, 1988	gas phase
Δ_rS°	25.02	cal/mol*K	PHPMS	Conway and Janik, 1970	gas phase
Δ_rS°	20.	cal/mol*K	PHPMS	Durden, Kebarle, et al., 1969	gas phase
Δ_rS°	20.6	cal/mol*K	PHPMS	Yang and Conway, 1964	gas phase

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
3.8	300.	DT	Rakshit and Warneck, 1981	gas phase
3.3	300.	DT	Rakshit and Warneck, 1980	gas phase
3.4	296.	FA	Howard, Bierbaum, et al., 1972	gas phase
5.9	200.	FA	Adams and Bohme, 1970	gas phase

Oxygen cation + = ( • )

By formula: O₂⁺ + N₂ = (O₂⁺ • N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.0 ± 0.3	kcal/mol	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Δ_rH°	5.2	kcal/mol	HPMS	Speller and Fitaire, 1983	gas phase
Δ_rH°	5.7	kcal/mol	PHPMS	Janik and Conway, 1967	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	17.4	cal/mol*K	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Δ_rS°	15.8	cal/mol*K	HPMS	Speller and Fitaire, 1983	gas phase
Δ_rS°	18.9	cal/mol*K	PHPMS	Janik and Conway, 1967	gas phase

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
0.0	296.	FA	Howard, Bierbaum, et al., 1972	gas phase

Oxygen cation + = ( • )

By formula: O₂⁺ + O₃ = (O₂⁺ • O₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14.5	kcal/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
Δ_rS°	20.5	cal/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
Δ_rG°	8.4	kcal/mol	FA	Dotan, Davidson, et al., 1978	gas phase; switching reaction(O2+)O2, Entropy change calculated or estimated; Conway and Janik, 1970

Oxygen cation + = ( • )

By formula: O₂⁺ + N₂O = (O₂⁺ • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13.4	kcal/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase
Δ_rH°	10.7 ± 0.4	kcal/mol	DT	Illies, 1988	gas phase; Δ_rH(0 K)=10.8 kcal/mol
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.	cal/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase
Δ_rS°	15.3	cal/mol*K	DT	Illies, 1988	gas phase; Δ_rH(0 K)=10.8 kcal/mol

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
8.9	200.	FA	Adams and Bohme, 1970	gas phase; switching reaction(O2+)O2

( Oxygen cation • ) + = ( • 2)

By formula: (O₂⁺ • CO₂) + CO₂ = (O₂⁺ • 2CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.6 ± 0.5	kcal/mol	PHPMS	Hiraoka, Nakajima, et al., 1988	gas phase
Δ_rH°	7.5	kcal/mol	PHPMS	Meot-Ner (Mautner) and Field, 1977	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	18.7	cal/mol*K	PHPMS	Hiraoka, Nakajima, et al., 1988	gas phase
Δ_rS°	15.	cal/mol*K	PHPMS	Meot-Ner (Mautner) and Field, 1977	gas phase; Entropy change is questionable

( Oxygen cation • 2) + = ( • 3)

By formula: (O₂⁺ • 2N₂) + N₂ = (O₂⁺ • 3N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.2 ± 0.3	kcal/mol	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Δ_rH°	3.5	kcal/mol	HPMS	Speller and Fitaire, 1983	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.6	cal/mol*K	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Δ_rS°	12.1	cal/mol*K	HPMS	Speller and Fitaire, 1983	gas phase; Entropy change is questionable

( Oxygen cation • ) + = ( • 2)

By formula: (O₂⁺ • N₂) + N₂ = (O₂⁺ • 2N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.5 ± 0.3	kcal/mol	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Δ_rH°	4.3	kcal/mol	HPMS	Speller and Fitaire, 1983	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.1	cal/mol*K	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Δ_rS°	13.8	cal/mol*K	HPMS	Speller and Fitaire, 1983	gas phase; Entropy change is questionable

( Oxygen cation • ) + = ( • 2)

By formula: (O₂⁺ • O₂) + O₂ = (O₂⁺ • 2O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.9 ± 0.3	kcal/mol	PHPMS	Hiraoka, 1988	gas phase
Δ_rH°	6.87 ± 0.06	kcal/mol	PHPMS	Conway and Janik, 1970	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	26.3	cal/mol*K	PHPMS	Hiraoka, 1988	gas phase
Δ_rS°	31.78	cal/mol*K	PHPMS	Conway and Janik, 1970	gas phase

( Oxygen cation • 3) + = ( • 4)

By formula: (O₂⁺ • 3O₂) + O₂ = (O₂⁺ • 4O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.1 ± 0.2	kcal/mol	PHPMS	Hiraoka, 1988	gas phase
Δ_rH°	2.46 ± 0.18	kcal/mol	PHPMS	Conway and Janik, 1970	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.2	cal/mol*K	PHPMS	Hiraoka, 1988	gas phase
Δ_rS°	23.9	cal/mol*K	PHPMS	Conway and Janik, 1970	gas phase

( Oxygen cation • 2) + = ( • 3)

By formula: (O₂⁺ • 2O₂) + O₂ = (O₂⁺ • 3O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.5 ± 0.2	kcal/mol	PHPMS	Hiraoka, 1988	gas phase
Δ_rH°	2.5 ± 0.1	kcal/mol	PHPMS	Conway and Janik, 1970	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	18.7	cal/mol*K	PHPMS	Hiraoka, 1988	gas phase
Δ_rS°	19.8	cal/mol*K	PHPMS	Conway and Janik, 1970	gas phase

( Oxygen cation • 4) + = ( • 5)

By formula: (O₂⁺ • 4O₂) + O₂ = (O₂⁺ • 5O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1.9 ± 0.2	kcal/mol	PHPMS	Hiraoka, 1988	gas phase
Δ_rH°	1.8 ± 0.7	kcal/mol	PHPMS	Conway and Janik, 1970	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.4	cal/mol*K	PHPMS	Hiraoka, 1988	gas phase
Δ_rS°	17.0	cal/mol*K	PHPMS	Conway and Janik, 1970	gas phase

( Oxygen cation • 4) + = ( • 5)

By formula: (O₂⁺ • 4N₂) + N₂ = (O₂⁺ • 5N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.7 ± 0.2	kcal/mol	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	16.2	cal/mol*K	PHPMS	Hiraoka and Nakajima, 1988	gas phase

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
0.7	184.	HPMS	Speller and Fitaire, 1983	gas phase

( Oxygen cation • 3) + = ( • 4)

By formula: (O₂⁺ • 3N₂) + N₂ = (O₂⁺ • 4N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.0 ± 0.3	kcal/mol	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.5	cal/mol*K	PHPMS	Hiraoka and Nakajima, 1988	gas phase

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
0.7	204.	HPMS	Speller and Fitaire, 1983	gas phase

( Oxygen cation • 5) + = ( • 6)

By formula: (O₂⁺ • 5CO₂) + CO₂ = (O₂⁺ • 6CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.0	kcal/mol	PHPMS	Hiraoka, Nakajima, et al., 1988	gas phase; Entropy change calculated or estimated
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	N/A	Hiraoka, Nakajima, et al., 1988	gas phase; Entropy change calculated or estimated

( Oxygen cation • 7) + = ( • 8)

By formula: (O₂⁺ • 7O₂) + O₂ = (O₂⁺ • 8O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1.82	kcal/mol	PHPMS	Hiraoka, 1988	gas phase; Entropy change calculated or estimated
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.	cal/mol*K	N/A	Hiraoka, 1988	gas phase; Entropy change calculated or estimated

( Oxygen cation • ) + = ( • • )

By formula: (O₂⁺ • O₂) + N₂ = (O₂⁺ • N₂ • O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.9	kcal/mol	HPMS	Speller and Fitaire, 1983	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	10.1	cal/mol*K	HPMS	Speller and Fitaire, 1983	gas phase; Entropy change is questionable

( Oxygen cation • 10) + = ( • 11)

By formula: (O₂⁺ • 10N₂) + N₂ = (O₂⁺ • 11N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1.4 ± 0.3	kcal/mol	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.2	cal/mol*K	PHPMS	Hiraoka and Nakajima, 1988	gas phase

( Oxygen cation • 9) + = ( • 10)

By formula: (O₂⁺ • 9N₂) + N₂ = (O₂⁺ • 10N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1.7 ± 0.2	kcal/mol	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.8	cal/mol*K	PHPMS	Hiraoka and Nakajima, 1988	gas phase

( Oxygen cation • 5) + = ( • 6)

By formula: (O₂⁺ • 5N₂) + N₂ = (O₂⁺ • 6N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.5 ± 0.2	kcal/mol	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	16.1	cal/mol*K	PHPMS	Hiraoka and Nakajima, 1988	gas phase

( Oxygen cation • 6) + = ( • 7)

By formula: (O₂⁺ • 6N₂) + N₂ = (O₂⁺ • 7N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.3 ± 0.2	kcal/mol	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	18.5	cal/mol*K	PHPMS	Hiraoka and Nakajima, 1988	gas phase

( Oxygen cation • 7) + = ( • 8)

By formula: (O₂⁺ • 7N₂) + N₂ = (O₂⁺ • 8N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.1 ± 0.2	kcal/mol	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.3	cal/mol*K	PHPMS	Hiraoka and Nakajima, 1988	gas phase

( Oxygen cation • 8) + = ( • 9)

By formula: (O₂⁺ • 8N₂) + N₂ = (O₂⁺ • 9N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1.9 ± 0.2	kcal/mol	PHPMS	Hiraoka and Nakajima, 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.1	cal/mol*K	PHPMS	Hiraoka and Nakajima, 1988	gas phase

( Oxygen cation • 2) + = ( • 3)

By formula: (O₂⁺ • 2N₂O) + N₂O = (O₂⁺ • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.9	kcal/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.	cal/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase

( Oxygen cation • 2) + = ( • 3)

By formula: (O₂⁺ • 2CO₂) + CO₂ = (O₂⁺ • 3CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	6.2 ± 0.3	kcal/mol	PHPMS	Hiraoka, Nakajima, et al., 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.8	cal/mol*K	PHPMS	Hiraoka, Nakajima, et al., 1988	gas phase

( Oxygen cation • 3) + = ( • 4)

By formula: (O₂⁺ • 3N₂O) + N₂O = (O₂⁺ • 4N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.2	kcal/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.	cal/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase

( Oxygen cation • 3) + = ( • 4)

By formula: (O₂⁺ • 3CO₂) + CO₂ = (O₂⁺ • 4CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.1 ± 0.3	kcal/mol	PHPMS	Hiraoka, Nakajima, et al., 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	19.6	cal/mol*K	PHPMS	Hiraoka, Nakajima, et al., 1988	gas phase

( Oxygen cation • 4) + = ( • 5)

By formula: (O₂⁺ • 4N₂O) + N₂O = (O₂⁺ • 5N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.8	kcal/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	23.	cal/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase

( Oxygen cation • 4) + = ( • 5)

By formula: (O₂⁺ • 4CO₂) + CO₂ = (O₂⁺ • 5CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.5 ± 0.5	kcal/mol	PHPMS	Hiraoka, Nakajima, et al., 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.0	cal/mol*K	PHPMS	Hiraoka, Nakajima, et al., 1988	gas phase

( Oxygen cation • 5) + = ( • 6)

By formula: (O₂⁺ • 5N₂O) + N₂O = (O₂⁺ • 6N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.3	kcal/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	22.	cal/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase

( Oxygen cation • 6) + = ( • 7)

By formula: (O₂⁺ • 6N₂O) + N₂O = (O₂⁺ • 7N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	3.9	kcal/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase

( Oxygen cation • ) + = ( • 2)

By formula: (O₂⁺ • N₂O) + N₂O = (O₂⁺ • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.5	kcal/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	20.	cal/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase

( Oxygen cation • 5) + = ( • 6)

By formula: (O₂⁺ • 5O₂) + O₂ = (O₂⁺ • 6O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1.9 ± 0.3	kcal/mol	PHPMS	Hiraoka, 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.7	cal/mol*K	PHPMS	Hiraoka, 1988	gas phase

( Oxygen cation • 6) + = ( • 7)

By formula: (O₂⁺ • 6O₂) + O₂ = (O₂⁺ • 7O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1.9 ± 0.4	kcal/mol	PHPMS	Hiraoka, 1988	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	21.9	cal/mol*K	PHPMS	Hiraoka, 1988	gas phase

Oxygen cation + = ( • )

By formula: O₂⁺ + O₂S = (O₂⁺ • O₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	9.6	kcal/mol	FA	Adams and Bohme, 1970	gas phase; switching reaction(O2+)O2; Conway and Janik, 1970

Oxygen cation + = ( • )

By formula: O₂⁺ + H₂O = (O₂⁺ • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.	kcal/mol	FA	Adams and Bohme, 1970	gas phase; switching reaction(O2+)SO2, Δ_rH>

( Oxygen cation • • ) + = ( • 2 • )

By formula: (O₂⁺ • N₂ • O₂) + N₂ = (O₂⁺ • 2N₂ • O₂)

Free energy of reaction

Δ_rG° (kcal/mol)	T (K)	Method	Reference	Comment
0.5	230.	HPMS	Speller and Fitaire, 1983	gas phase

Oxygen cation + = ( • )

By formula: O₂⁺ + Kr = (O₂⁺ • Kr)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.6	kcal/mol	PDiss	Jarrold, Misev, et al., 1984	gas phase

References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Notes

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, Int. J. Mass Spectrom Ion Phys., 1981, 40, 2, 135, https://doi.org/10.1016/0020-7381(81)80037-X . [all data]

Hiraoka, 1988
Hiraoka, K., 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, J. Chem. Phys., 1988, 89, 5, 3190, https://doi.org/10.1063/1.454976 . [all data]

Durden, Kebarle, et al., 1969
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, J. Chem. Phys., 1969, 50, 2, 805, https://doi.org/10.1063/1.1671133 . [all data]

Yang and Conway, 1964
Yang, J.H.; Conway, D.C., Bonding in Ion Clusters. I. O4+, J. Chem. Phys., 1964, 40, 6, 1729, https://doi.org/10.1063/1.1725389 . [all data]

Rakshit and Warneck, 1980
Rakshit, A.B.; Warneck, P., A Drift Chamber Study of the Formation of Water Cluster Ions in Oxygen, J. Chem. Phys., 1980, 73, 10, 5074, https://doi.org/10.1063/1.439985 . [all data]

Howard, Bierbaum, et al., 1972
Howard, C.J.; Bierbaum, V.M.; Rundle, H.W.; Kaufman, F., Kinetics and Mechanism of Formation of Water Cluster Ions from O2+ and H2O+, J. Chem. Phys., 1972, 57, 8, 3491, https://doi.org/10.1063/1.1678783 . [all data]

Adams and Bohme, 1970
Adams, N.G.; Bohme, D., Flowing Afterglow Studies of Formation and Reactions of Cluster Ions of O₂⁺, O₂^-, and O^-, J. Chem. Phys., 1970, 52, 6, 3133, https://doi.org/10.1063/1.1673449 . [all data]

Hiraoka and Nakajima, 1988
Hiraoka, K.; Nakajima, G., A Determination of the Stabilities of N2+(N2)n and O2+(N2)n with n = 1 - 11 from Measurements of the Gas - Phase Ion Equilibria, J. Chem. Phys., 1988, 88, 12, 7709, https://doi.org/10.1063/1.454285 . [all data]

Speller and Fitaire, 1983
Speller, C.V.; Fitaire, M., Proceedings of the 16th International Conference on Phenomena of Ionized Gases, H. Boetticher, H. Wenk and E. Shulz - Gulde, ed(s)., ICPIG, Dusseldorf, 1983, 568. [all data]

Janik and Conway, 1967
Janik, G.S.; Conway, D.C., Bonding in Heteromolecular Ion Clusters. N2O2+, J. Phys. Chem., 1967, 71, 4, 823, https://doi.org/10.1021/j100863a007 . [all data]

Hiraoka, Fujimaki, et al., 1994
Hiraoka, K.; Fujimaki, S.; Aruga, K.; Sato, T.; Yamabe, S., Gas-Phase Solavtion of NO+, O2+, N2O+, and H3O+ with N2O, J. Chem. Phys., 1994, 101, 5, 4073, https://doi.org/10.1063/1.467524 . [all data]

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, J. Chem. Phys., 1984, 81, 10, 4369, https://doi.org/10.1063/1.447448 . [all data]

Notes

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Symbols used in this document:

S°_{gas,1 bar}	Entropy of gas at standard conditions (1 bar)
T	Temperature
Δ_rG°	Free energy of reaction at standard conditions
Δ_rH°	Enthalpy of reaction at standard conditions
Δ_rS°	Entropy of reaction at standard conditions

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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