Nitrous oxide

Formula: N₂O
Molecular weight: 44.0128
IUPAC Standard InChI: InChI=1S/N2O/c1-2-3
IUPAC Standard InChIKey: GQPLMRYTRLFLPF-UHFFFAOYSA-N
CAS Registry Number: 10024-97-2
Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript.
Other names: Nitrogen oxide (N2O); Dinitrogen monoxide; Dinitrogen oxide; Laughing gas; N2O; Factitious air; Hyponitrous acid anhydride; Nitrogen oxide; UN 1070; UN 2201; Nitrogen monoxide; Nitral
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Information on this page:
Other data available:
- Gas phase thermochemistry data
- Phase change data
- Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 83
- Fluid Properties
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Henry's Law data

Go To: Top, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References, Notes

Data compiled by: Rolf Sander

Henry's Law constant (water solution)

k_H(T) = k°_H exp(d(ln(k_H))/d(1/T) ((1/T) - 1/(298.15 K)))
k°_H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(k_H))/d(1/T) = Temperature dependence constant (K)

k°_H (mol/(kg*bar))	d(ln(k_H))/d(1/T) (K)	Method	Reference	Comment
0.025	2600.	L	N/A	The parameterization given by missing citation (parameters A, B, C) doesn't fit the data in the same paper for this substance. Therefore the parameteriztaion of the solubility data (X₁) was recalculated.
0.024	2800.	Q	N/A	Only the tabulated data between T = 273. K and T = 303. K from missing citation was used to derive k_H and -Δ k_H/R. Above T = 303. K the tabulated data could not be parameterized by equation (reference missing) very well. The partial pressure of water vapor (needed to convert some Henry's law constants) was calculated using the formula given by missing citation. The quantities A and α from missing citation were assumed to be identical.
0.025		Q	N/A	Several references are given in the list of Henry's law constants but not assigned to specific species.
0.024	2600.	L	N/A
0.026		Q	N/A
0.024	2700.	X	N/A
0.025		X	N/A	The value is taken from the compilation of solubilities by W. Asman (unpublished).

Gas phase ion energetics data

Go To: Top, Henry's Law data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References, Notes

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
B - John E. Bartmess

View reactions leading to N₂O⁺ (ion structure unspecified)

Quantity	Value	Units	Method	Reference	Comment
IE (evaluated)	12.889 ± 0.004	eV	N/A	N/A	L
Quantity	Value	Units	Method	Reference	Comment
Proton affinity (review)	549.8	kJ/mol	N/A	Hunter and Lias, 1998	at N; HL
Proton affinity (review)	575.2	kJ/mol	N/A	Hunter and Lias, 1998	at O; HL
Quantity	Value	Units	Method	Reference	Comment
Gas basicity	523.3	kJ/mol	N/A	Hunter and Lias, 1998	at N; HL
Gas basicity	548.7	kJ/mol	N/A	Hunter and Lias, 1998	at O; HL

Electron affinity determinations

EA (eV)	Method	Reference	Comment
0.22 ± 0.10	CIDT	Tiernan and Wu, 1978	B
>-0.15 ± 0.10	NBIE	Nalley, Compton, et al., 1973	B
0.27 ± 0.17	ECD	Wentworth, Chen, et al., 1971	B
<0.76 ± 0.10	LPES	Coe, Snodgrass, et al., 1986	Vertical Detachment Energy: ca. 1.5 eV. Anion bent, with little Franck-Condon overlap; B

Ionization energy determinations

IE (eV)	Method	Reference	Comment
12.89	PE	Kimura, Katsumata, et al., 1981	LLK
12. ± 1.	PI	Hitchcock, Brion, et al., 1980	LLK
12.91 ± 0.03	EI	Sahini, Constantin, et al., 1978	LLK
12.886 ± 0.002	PE	Berkowitz and Eland, 1977	LLK
12.88 ± 0.005	PI	Coppens, Smets, et al., 1974	LLK
12.89 ± 0.005	PI	Coppens, Smets, et al., 1974	LLK
12.90	PE	Eland, 1973	LLK
12.891 ± 0.008	PE	Collin and Natalis, 1969	RDSH
12.893 ± 0.005	PE	Brundle and Turner, 1969	RDSH
12.89	PI	Cook, Metzger, et al., 1968	RDSH
12.888 ± 0.007	PI	Dibeler and Walker, 1967	RDSH
12.8 ± 0.05	EI	Carette, 1967	RDSH
12.882 ± 0.008	PI	Nicholson, 1965	RDSH
12.894	S	Tanaka, Jursa, et al., 1960	RDSH
12.89	PE	Potts and Williams, 1974	Vertical value; LLK

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference	Comment
N⁺	20. ± 1.	NO	PI	Hitchcock, Brion, et al., 1980	LLK
N⁺	19.494	NO	PE	Berkowitz and Eland, 1977	LLK
N⁺	20.06	NO	PE	Dibeler, Walker, et al., 1967	RDSH
NO⁺	15.3 ± 0.1	N	EI	Olivier, Locht, et al., 1982	LBLHLM
NO⁺	16. ± 1.	N	PI	Hitchcock, Brion, et al., 1980	LLK
NO⁺	16.53 ± 0.01	N	PI	Coppens, Smets, et al., 1974	LLK
NO⁺	15.01	N	PI	Coppens, Smets, et al., 1974	LLK
NO⁺	17.73 ± 0.01	N	PI	Coppens, Smets, et al., 1974	LLK
NO⁺	14.3 ± 0.3	N(4Sø)	EI	Coleman, Delderfield, et al., 1969	RDSH
NO⁺	17.74	N(2Pø)?	PI	Dibeler and Walker, 1967	RDSH
NO⁺	16.53	N(2Dø)?	PI	Dibeler and Walker, 1967	RDSH
NO⁺	15.01	N(4Sø)	PI	Dibeler and Walker, 1967	RDSH
NO⁺	13.75 ± 0.10	N(4Sø)	EI	Curran and Fox, 1961	RDSH
N₂⁺	17.3 ± 0.2	O	EI	Olivier, Locht, et al., 1982	LBLHLM
N₂⁺	18. ± 1.	O	PI	Hitchcock, Brion, et al., 1980	LLK
N₂⁺	17.29	O	PI	Dibeler, 1967	RDSH
O⁺	15. ± 1.	N₂	PI	Hitchcock, Brion, et al., 1980	LLK
O⁺	15.31	N₂	PI	Dibeler, Walker, et al., 1967	RDSH

Ion clustering data

Go To: Top, Henry's Law data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References, Notes

Data compiled as indicated in comments:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess

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

+ Nitrous oxide = ( • )

By formula: Br^- + N₂O = (Br^- • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	75.7	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • Nitrous oxide ) + = ( • 2)

By formula: (Br^- • N₂O) + N₂O = (Br^- • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	91.2	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • 2 Nitrous oxide ) + = ( • 3)

By formula: (Br^- • 2N₂O) + N₂O = (Br^- • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	95.8	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

+ Nitrous oxide = ( • )

By formula: CH₃⁺ + N₂O = (CH₃⁺ • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	221.	kJ/mol	PHPMS	McMahon, Heinis, et al., 1988	gas phase; switching reaction(CH3+)N2, Entropy change calculated or estimated, uses MCA(N2) = 202. kJ/mol; Foster, Williamson, et al., 1974; M

+ Nitrous oxide = ( • )

By formula: Cl^- + N₂O = (Cl^- • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	24. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	80.3	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • Nitrous oxide ) + = ( • 2)

By formula: (Cl^- • N₂O) + N₂O = (Cl^- • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	24. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	81.6	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • 2 Nitrous oxide ) + = ( • 3)

By formula: (Cl^- • 2N₂O) + N₂O = (Cl^- • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	83.7	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • 3 Nitrous oxide ) + = ( • 4)

By formula: (Cl^- • 3N₂O) + N₂O = (Cl^- • 4N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	87.4	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • 4 Nitrous oxide ) + = ( • 5)

By formula: (Cl^- • 4N₂O) + N₂O = (Cl^- • 5N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	92.	J/mol*K	N/A	Hiraoka, Aruga, et al., 1993	gas phase; Entropy change calculated or estimated; M

+ Nitrous oxide = ( • )

By formula: F^- + N₂O = (F^- • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	41. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • Nitrous oxide ) + = ( • 2)

By formula: (F^- • N₂O) + N₂O = (F^- • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	39. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	95.0	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • 2 Nitrous oxide ) + = ( • 3)

By formula: (F^- • 2N₂O) + N₂O = (F^- • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	35. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	98.7	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • 3 Nitrous oxide ) + = ( • 4)

By formula: (F^- • 3N₂O) + N₂O = (F^- • 4N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	31. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	102.	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • 4 Nitrous oxide ) + = ( • 5)

By formula: (F^- • 4N₂O) + N₂O = (F^- • 5N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	26. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	107.	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • 5 Nitrous oxide ) + = ( • 6)

By formula: (F^- • 5N₂O) + N₂O = (F^- • 6N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	108.	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • 6 Nitrous oxide ) + = ( • 7)

By formula: (F^- • 6N₂O) + N₂O = (F^- • 7N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	84.	J/mol*K	N/A	Hiraoka, Aruga, et al., 1993	gas phase; Entropy change calculated or estimated; M

(H^- • 4294967295 Nitrous oxide ) + = H^-

By formula: (H^- • 4294967295N₂O) + N₂O = H^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	248. ± 17.	kJ/mol	Ther	Sheldon, Ohair, et al., 1995	gas phase; Acidity between PhCOMe, HCONHMe, near CF3CH2OH. Acid: H2N-NO; B

HN₂O⁺ + Nitrous oxide = (HN₂O⁺ • )

By formula: HN₂O⁺ + N₂O = (HN₂O⁺ • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	69.9	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Δ_rH°	86.2	kJ/mol	PHPMS	Szulejko and McMahon, 1992	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	84.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Δ_rS°	132.	J/mol*K	PHPMS	Szulejko and McMahon, 1992	gas phase; M

(HN₂O⁺ • Nitrous oxide ) + = (HN₂O⁺ • 2)

By formula: (HN₂O⁺ • N₂O) + N₂O = (HN₂O⁺ • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	27.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	84.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

(HN₂O⁺ • 2 Nitrous oxide ) + = (HN₂O⁺ • 3)

By formula: (HN₂O⁺ • 2N₂O) + N₂O = (HN₂O⁺ • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	24.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

(HN₂O⁺ • 3 Nitrous oxide ) + = (HN₂O⁺ • 4)

By formula: (HN₂O⁺ • 3N₂O) + N₂O = (HN₂O⁺ • 4N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	120.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

(HN₂O⁺ • 4 Nitrous oxide ) + = (HN₂O⁺ • 5)

By formula: (HN₂O⁺ • 4N₂O) + N₂O = (HN₂O⁺ • 5N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	130.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

(HN₂O⁺ • 5 Nitrous oxide ) + = (HN₂O⁺ • 6)

By formula: (HN₂O⁺ • 5N₂O) + N₂O = (HN₂O⁺ • 6N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	130.	J/mol*K	N/A	Hiraoka, Fujimaki, et al., 1994	gas phase; Entropy change calculated or estimated; M

(HO^- • Nitrous oxide ) + = (HO^- • 2)

By formula: (HO^- • N₂O) + N₂O = (HO^- • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	32.6	kJ/mol	N/A	Kim, Wenthold, et al., 1998	gas phase; Vertical Detachment Energy: 2.485 eV. Affinity is EA difference with next lower +0.08 eV f; B

(HO^- • 2 Nitrous oxide ) + = (HO^- • 3)

By formula: (HO^- • 2N₂O) + N₂O = (HO^- • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	28.9	kJ/mol	N/A	Kim, Wenthold, et al., 1998	gas phase; Vertical Detachment Energy: 2.761 eV. Affinity is EA difference with next lower +0.08 eV f; B

(HO^- • 3 Nitrous oxide ) + = (HO^- • 4)

By formula: (HO^- • 3N₂O) + N₂O = (HO^- • 4N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	>30. ± 140.	kJ/mol	N/A	Kim, Wenthold, et al., 1998	gas phase; Vertical Detachment Energy: 2.981 eV. Affinity is EA difference with next lower +0.08 eV f; B

(HO^- • 4 Nitrous oxide ) + = (HO^- • 5)

By formula: (HO^- • 4N₂O) + N₂O = (HO^- • 5N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	>20. ± 230.	kJ/mol	N/A	Kim, Wenthold, et al., 1998	gas phase; Vertical Detachment Energy: 3.146 eV. Affinity is EA difference with next lower +0.08 eV f; B

+ Nitrous oxide = ( • )

By formula: H₃O⁺ + N₂O = (H₃O⁺ • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	70.7	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	110.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

( • Nitrous oxide ) + = ( • 2)

By formula: (H₃O⁺ • N₂O) + N₂O = (H₃O⁺ • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	50.6	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	96.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

( • 2 Nitrous oxide ) + = ( • 3)

By formula: (H₃O⁺ • 2N₂O) + N₂O = (H₃O⁺ • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	42.7	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	110.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

( • 3 Nitrous oxide ) + = ( • 4)

By formula: (H₃O⁺ • 3N₂O) + N₂O = (H₃O⁺ • 4N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	N/A	Hiraoka, Fujimaki, et al., 1994	gas phase; Entropy change calculated or estimated; M

+ Nitrous oxide = ( • )

By formula: I^- + N₂O = (I^- • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	16. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	59.0	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • Nitrous oxide ) + = ( • 2)

By formula: (I^- • N₂O) + N₂O = (I^- • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	14. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	59.4	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( • 2 Nitrous oxide ) + = ( • 3)

By formula: (I^- • 2N₂O) + N₂O = (I^- • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	13.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	63.	J/mol*K	N/A	Hiraoka, Aruga, et al., 1993	gas phase; Entropy change calculated or estimated; M

( • 3 Nitrous oxide ) + = ( • 4)

By formula: (I^- • 3N₂O) + N₂O = (I^- • 4N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( • 4 Nitrous oxide ) + = ( • 5)

By formula: (I^- • 4N₂O) + N₂O = (I^- • 5N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( • 5 Nitrous oxide ) + = ( • 6)

By formula: (I^- • 5N₂O) + N₂O = (I^- • 6N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.6 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( • 6 Nitrous oxide ) + = ( • 7)

By formula: (I^- • 6N₂O) + N₂O = (I^- • 7N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.2 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( • 7 Nitrous oxide ) + = ( • 8)

By formula: (I^- • 7N₂O) + N₂O = (I^- • 8N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.8 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( • 8 Nitrous oxide ) + = ( • 9)

By formula: (I^- • 8N₂O) + N₂O = (I^- • 9N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( • 9 Nitrous oxide ) + = ( • 10)

By formula: (I^- • 9N₂O) + N₂O = (I^- • 10N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.5 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( • 10 Nitrous oxide ) + = ( • 11)

By formula: (I^- • 10N₂O) + N₂O = (I^- • 11N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.2 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( • 11 Nitrous oxide ) + = ( • 12)

By formula: (I^- • 11N₂O) + N₂O = (I^- • 12N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.4 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

+ Nitrous oxide = ( • )

By formula: NO^- + N₂O = (NO^- • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	60. ± 100.	kJ/mol	AVG	N/A	Average of 6 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	75.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Δ_rS°	62.3	J/mol*K	DT	Illies, 1988	gas phase; Δ_rH(0 K)=32.2 kJ/mol; M

( • Nitrous oxide ) + = ( • 2)

By formula: (NO^- • N₂O) + N₂O = (NO^- • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	24.7 ± 3.8	kJ/mol	N/A	Hendricks, de Clercq, et al., 2002	gas phase; B
Δ_rH°	19.2	kJ/mol	N/A	Coe, Snodgrass, et al., 1987	gas phase; B
Δ_rH°	23.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Δ_rH°	30.	kJ/mol	PES	Coe, Snodgrass, et al., 1986	gas phase; D(N2O)2 not accounted for; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-4.2 ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

( • 2 Nitrous oxide ) + = ( • 3)

By formula: (NO^- • 2N₂O) + N₂O = (NO^- • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.8 ± 3.8	kJ/mol	N/A	Hendricks, de Clercq, et al., 2002	gas phase; B
Δ_rH°	21.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	96.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Δ_rS°	88.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-5.0 ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

( • 3 Nitrous oxide ) + = ( • 4)

By formula: (NO^- • 3N₂O) + N₂O = (NO^- • 4N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.9 ± 3.8	kJ/mol	N/A	Hendricks, de Clercq, et al., 2002	gas phase; B
Δ_rH°	19.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-5.0 ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

( • 4 Nitrous oxide ) + = ( • 5)

By formula: (NO^- • 4N₂O) + N₂O = (NO^- • 5N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.6 ± 3.8	kJ/mol	N/A	Hendricks, de Clercq, et al., 2002	gas phase; B
Δ_rH°	19.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-6.3 ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

( • 5 Nitrous oxide ) + = ( • 6)

By formula: (NO^- • 5N₂O) + N₂O = (NO^- • 6N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.4 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-7.9 ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

( • 6 Nitrous oxide ) + = ( • 7)

By formula: (NO^- • 6N₂O) + N₂O = (NO^- • 7N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.6 ± 1.3	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-11. ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

NO₂⁺ + Nitrous oxide = (NO₂⁺ • )

By formula: NO₂⁺ + N₂O = (NO₂⁺ • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	59.0	kJ/mol	EI	Cameron, Aitken, et al., 1994	gas phase; M
Δ_rH°	72.8	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Δ_rH°	55. ± 3.	kJ/mol	DT	Illies, 1988	gas phase; Δ_rH(0 K)=55.7 kJ/mol; M
Δ_rH°	54.8	kJ/mol	PI	Linn and Ng, 1981	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Δ_rS°	51.9	J/mol*K	DT	Illies, 1988	gas phase; Δ_rH(0 K)=55.7 kJ/mol; M

(NO₂⁺ • Nitrous oxide ) + = (NO₂⁺ • 2)

By formula: (NO₂⁺ • N₂O) + N₂O = (NO₂⁺ • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.	kJ/mol	EI	Cameron, Aitken, et al., 1994	gas phase; M
Δ_rH°	24.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	75.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

(NO₂⁺ • 2 Nitrous oxide ) + = (NO₂⁺ • 3)

By formula: (NO₂⁺ • 2N₂O) + N₂O = (NO₂⁺ • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12.	kJ/mol	EI	Cameron, Aitken, et al., 1994	gas phase; M
Δ_rH°	23.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

(NO₂⁺ • 3 Nitrous oxide ) + = (NO₂⁺ • 4)

By formula: (NO₂⁺ • 3N₂O) + N₂O = (NO₂⁺ • 4N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

(NO₂⁺ • 4 Nitrous oxide ) + = (NO₂⁺ • 5)

By formula: (NO₂⁺ • 4N₂O) + N₂O = (NO₂⁺ • 5N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	17.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	92.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

(NO₂⁺ • 5 Nitrous oxide ) + = (NO₂⁺ • 6)

By formula: (NO₂⁺ • 5N₂O) + N₂O = (NO₂⁺ • 6N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	92.	J/mol*K	N/A	Hiraoka, Fujimaki, et al., 1994	gas phase; Entropy change calculated or estimated; M

(N₂O₂^- • 4294967295 Nitrous oxide ) + = N₂O₂^-

By formula: (N₂O₂^- • 4294967295N₂O) + N₂O = N₂O₂^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	96.7 ± 5.0	kJ/mol	N/A	Li and Continetti, 2002	gas phase; B
Δ_rH°	135.1 ± 2.9	kJ/mol	LPD	Osboen, Leahy, et al., 1996	gas phase; Affinity at 0 K; B

(O^- • Nitrous oxide ) + = (O^- • 2)

By formula: (O^- • N₂O) + N₂O = (O^- • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.6 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	79.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-1. ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

(O^- • 2 Nitrous oxide ) + = (O^- • 3)

By formula: (O^- • 2N₂O) + N₂O = (O^- • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.6 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-4. ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

(O^- • 3 Nitrous oxide ) + = (O^- • 4)

By formula: (O^- • 3N₂O) + N₂O = (O^- • 4N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.8 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-8.4 ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

(O^- • 4 Nitrous oxide ) + = (O^- • 5)

By formula: (O^- • 4N₂O) + N₂O = (O^- • 5N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.8 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-9.6 ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

(O^- • 5 Nitrous oxide ) + = (O^- • 6)

By formula: (O^- • 5N₂O) + N₂O = (O^- • 6N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.3 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	110.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-11. ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

(O^- • 6 Nitrous oxide ) + = (O^- • 7)

By formula: (O^- • 6N₂O) + N₂O = (O^- • 7N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.3 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	120.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-14. ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

+ Nitrous oxide = ( • )

By formula: O₂⁺ + N₂O = (O₂⁺ • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	56.1	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Δ_rH°	45. ± 2.	kJ/mol	DT	Illies, 1988	gas phase; Δ_rH(0 K)=45.2 kJ/mol; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	96.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Δ_rS°	64.0	J/mol*K	DT	Illies, 1988	gas phase; Δ_rH(0 K)=45.2 kJ/mol; M

Free energy of reaction

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

( • Nitrous oxide ) + = ( • 2)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	31.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	84.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

( • 2 Nitrous oxide ) + = ( • 3)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	25.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	79.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

( • 3 Nitrous oxide ) + = ( • 4)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	92.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

( • 4 Nitrous oxide ) + = ( • 5)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	96.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

( • 5 Nitrous oxide ) + = ( • 6)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	18.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	92.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

( • 6 Nitrous oxide ) + = ( • 7)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	84.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994	gas phase; M

+ Nitrous oxide = ( • )

By formula: O₂^- + N₂O = (O₂^- • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<56.90	kJ/mol	IMRB	Adams and Bohme, 1970	gas phase; N₂O..O₂^- + O₂ -> O₄^- + N₂O; B
Δ_rH°	37.	kJ/mol	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	110.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M

( • Nitrous oxide ) + = ( • 2)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	36.4 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	110.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3. ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

( • 2 Nitrous oxide ) + = ( • 3)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	26.8 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-3. ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

( • 3 Nitrous oxide ) + = ( • 4)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	23.8 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-6.3 ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

( • 4 Nitrous oxide ) + = ( • 5)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	22.2 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-7.9 ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

( • 5 Nitrous oxide ) + = ( • 6)

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

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.9 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-9.2 ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1994, 2	gas phase; B

IR Spectrum

Go To: Top, Henry's Law data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), Gas Chromatography, References, Notes

Data compiled by: Coblentz Society, Inc.

GAS (100 mmHg, N2 ADDED, TOTAL PRESSURE 600 mmHg); DOW KBr FOREPRISM-GRATING; DIGITIZED BY COBLENTZ SOCIETY (BATCH I) FROM HARD COPY; 2 cm^-1 resolution

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Mass spectrum (electron ionization)

Go To: Top, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Gas Chromatography, References, Notes

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

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NIST MS number	70

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Gas Chromatography

Go To: Top, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), References, Notes

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Column type	Active phase	I	Reference	Comment
Capillary	SPB-1	182.	Flanagan, Streete, et al., 1997	60. m/0.53 mm/5. μm, He; Program: 40C(6min) => 5C/min => 80C => 10C/min => 200C
Capillary	SPB-1	182.	Strete, Ruprah, et al., 1992	60. m/0.53 mm/5.0 μm, Helium; Program: 40 0C (6 min) 5 0C/min -> 80 0C 10 0C/min -> 200 0C

References

Go To: Top, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, Notes

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Tiernan and Wu, 1978
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Notes

Go To: Top, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References

Symbols used in this document:

AE	Appearance energy
EA	Electron affinity
IE (evaluated)	Recommended ionization energy
T	Temperature
d(ln(k_H))/d(1/T)	Temperature dependence parameter for Henry's Law constant
k°_H	Henry's Law constant at 298.15K
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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NIST Chemistry WebBook, SRD 69

Nitrous oxide

Data at NIST subscription sites:

Henry's Law data

Henry's Law constant (water solution)

Gas phase ion energetics data

Electron affinity determinations

Ionization energy determinations

Appearance energy determinations

Ion clustering data

Clustering reactions

Free energy of reaction

IR Spectrum

Mass spectrum (electron ionization)

Spectrum

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Gas Chromatography

Normal alkane RI, non-polar column, custom temperature program

References

Notes