Nitrogen

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Gas phase thermochemistry data

Go To: Top, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), 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
gas,1 bar45.7957 ± 0.001cal/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar45.796cal/mol*KReviewChase, 1998Data last reviewed in March, 1977

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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View table.

Temperature (K) 100. to 500.500. to 2000.2000. to 6000.
A 6.9279194.6620068.489178
B 0.4431114.7531200.269772
C -2.305798-2.055099-0.046870
D 3.9759490.3273860.003504
E 0.0000280.126100-1.088375
F -2.072637-1.179542-4.534157
G 54.1149150.7624353.77175
H 0.00.00.0
ReferenceChase, 1998Chase, 1998Chase, 1998
Comment Data last reviewed in March, 1977; New parameter fit January 2009 Data last reviewed in March, 1977; New parameter fit January 2009 Data last reviewed in March, 1977; New parameter fit January 2009

Phase change data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Mass spectrum (electron ionization), 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil77.34KN/AJacobsen, Stewart, et al., 1986TRC
Tboil77.4KN/AStreng, 1971Uncertainty assigned by TRC = 0.3 K; TRC
Quantity Value Units Method Reference Comment
Tfus63.3KN/AStreng, 1971Uncertainty assigned by TRC = 0.3 K; TRC
Quantity Value Units Method Reference Comment
Ttriple63.14KN/AJacobsen, Stewart, et al., 1986TRC
Ttriple63.14KN/AAngus, de Reuck, et al., 1979Uncertainty assigned by TRC = 0.005 K; TRC
Ttriple63.14KN/AHenning and Otto, 1936Uncertainty assigned by TRC = 0.06 K; temperature measured with He gas thermometer; TRC
Ttriple63.13KN/AGiauque and Clayton, 1933Crystal phase 1 phase; Uncertainty assigned by TRC = 0.06 K; TRC
Quantity Value Units Method Reference Comment
Ptriple0.1236atmN/AJacobsen, Stewart, et al., 1986Uncertainty assigned by TRC = 0.0005 atm; TRC
Ptriple0.1237atmN/AAngus, de Reuck, et al., 1979Uncertainty assigned by TRC = 0.0002 atm; TRC
Ptriple0.124atmN/AHenning and Otto, 1936Uncertainty assigned by TRC = 0.0007 atm; TRC
Ptriple0.1237atmN/AGiauque and Clayton, 1933Crystal phase 1 phase; Uncertainty assigned by TRC = 0.0001 atm; Average Pressure; TRC
Quantity Value Units Method Reference Comment
Tc126.19KN/AJacobsen, Stewart, et al., 1986Uncertainty assigned by TRC = 0.01 K; TRC
Tc126.2KN/AAngus, de Reuck, et al., 1979Uncertainty assigned by TRC = 0.05 K; TRC
Tc126.2KN/AWeber, 1970Uncertainty assigned by TRC = 0.2 K; IPTS-68, critical point not observed and Tc taken from literature but equation would allow pc to be calculated. Tc unct. several tenths K. "Ultra-high" purity nitrogen.; TRC
Tc128.45KN/ACardoso, 1915Uncertainty assigned by TRC = 0.5 K; TRC
Quantity Value Units Method Reference Comment
Pc33.534atmN/AJacobsen, Stewart, et al., 1986Uncertainty assigned by TRC = 0.007 atm; TRC
Pc33.56atmN/AAngus, de Reuck, et al., 1979Uncertainty assigned by TRC = 0.05 atm; TRC
Pc3.0297atmN/ACardoso, 1915Uncertainty assigned by TRC = 0.003 atm; TRC
Pc3.0281atmN/ACardoso, 1915Uncertainty assigned by TRC = 0.003 atm; TRC
Quantity Value Units Method Reference Comment
ρc11.18mol/lN/AJacobsen, Stewart, et al., 1986Uncertainty assigned by TRC = 0.02 mol/l; TRC
ρc11.2mol/lN/AAngus, de Reuck, et al., 1979Uncertainty assigned by TRC = 0.02 mol/l; TRC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Reference Comment
1.578.Edejer and Thodos, 1967Based on data from 63. to 126. K.; AC
1.377.Giauque and Clayton, 1933, 2AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
63.14 to 126.3.7305264.651-6.788Edejer and Thodos, 1967Coefficents calculated by NIST from author's data.
63.14 to 78.003.63221257.877-6.344Moussa, Muijlwijk, et al., 1966Coefficents calculated by NIST from author's data.

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), 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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
MS - José A. Martinho Simões
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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.

Reactions 1 to 50

Nitric oxide anion + Nitrogen = (Nitric oxide anion • Nitrogen)

By formula: NO- + N2 = (NO- • N2)

Quantity Value Units Method Reference Comment
Δr4.6 ± 0.3kcal/molPHPMSHiraoka and Yamabe, 1989gas phase; M
Δr4.7kcal/molDTGheno and Fitaire, 1987gas phase; ΔrS+-2.9 cal/mol*K; M
Δr4.4kcal/molHPMSSpeller, Fitaire, et al., 1983gas phase; Entropy change is questionable; M
Δr5.2kcal/molHPMSTurner and Conway, 1976gas phase; M
Δr4.5kcal/molDTJohnsen, Huang, et al., 1975gas phase; corrected for ln T by Keesee and Castleman, 1986; M
Quantity Value Units Method Reference Comment
Δr17.0cal/mol*KPHPMSHiraoka and Yamabe, 1989gas phase; M
Δr13.8cal/mol*KDTGheno and Fitaire, 1987gas phase; ΔrS+-2.9 cal/mol*K; M
Δr13.3cal/mol*KHPMSSpeller, Fitaire, et al., 1983gas phase; Entropy change is questionable; M
Δr18.9cal/mol*KHPMSTurner and Conway, 1976gas phase; M
Δr15.7cal/mol*KDTJohnsen, Huang, et al., 1975gas phase; corrected for ln T by Keesee and Castleman, 1986; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
0.5200.FADunkin, Fehsenfeld, et al., 1971gas phase; M

Nitrogen cation + Nitrogen = (Nitrogen cation • Nitrogen)

By formula: N2+ + N2 = (N2+ • N2)

Quantity Value Units Method Reference Comment
Δr24.4 to 24.4kcal/molRNGN/ARange of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Δr21.0cal/mol*KPHPMSHiraoka and Nakajima, 1988gas phase; M
Δr16.2cal/mol*KPHPMSTeng and Conway, 1973gas phase; M
Δr19.5cal/mol*KPHPMSPayzant and Kebarle, 1970gas phase; M
Δr11.cal/mol*KDTVarney, 1968gas phase; Entropy change is questionable; M
Δr-1.cal/mol*KDTVarney, 1959gas phase; Entropy change is questionable; M

Oxygen cation + Nitrogen = (Oxygen cation • Nitrogen)

By formula: O2+ + N2 = (O2+ • N2)

Quantity Value Units Method Reference Comment
Δr5.0 ± 0.3kcal/molPHPMSHiraoka and Nakajima, 1988gas phase; M
Δr5.2kcal/molHPMSSpeller and Fitaire, 1983gas phase; M
Δr5.7kcal/molPHPMSJanik and Conway, 1967gas phase; M
Quantity Value Units Method Reference Comment
Δr17.4cal/mol*KPHPMSHiraoka and Nakajima, 1988gas phase; M
Δr15.8cal/mol*KHPMSSpeller and Fitaire, 1983gas phase; M
Δr18.9cal/mol*KPHPMSJanik and Conway, 1967gas phase; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
0.0296.FAHoward, Bierbaum, et al., 1972gas phase; M

(HN2+ • 4Nitrogen) + Nitrogen = (HN2+ • 5Nitrogen)

By formula: (HN2+ • 4N2) + N2 = (HN2+ • 5N2)

Quantity Value Units Method Reference Comment
Δr3.0 ± 0.3kcal/molPHPMSHiraoka and Mori, 1989gas phase; M
Δr3.2kcal/molPHPMSHiraoka, Saluja, et al., 1979gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr22.9cal/mol*KPHPMSHiraoka and Mori, 1989gas phase; M
Δr20.cal/mol*KN/AHiraoka, Saluja, et al., 1979gas phase; Entropy change calculated or estimated; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
1.492.PHPMSHiraoka, Saluja, et al., 1979gas phase; Entropy change calculated or estimated; M

(Oxygen anion • 7Nitrogen • Oxygen) + Nitrogen = (Oxygen anion • 8Nitrogen • Oxygen)

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

Quantity Value Units Method Reference Comment
Δr1.6 ± 0.3kcal/molPHPMSHiraoka, 1988gas phase; M
Δr1.53kcal/molPHPMSHiraoka, 1988gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr17.9cal/mol*KPHPMSHiraoka, 1988gas phase; M
Δr18.0cal/mol*KN/AHiraoka, 1988gas phase; Entropy change calculated or estimated; M

(Oxygen cation • 2Nitrogen) + Nitrogen = (Oxygen cation • 3Nitrogen)

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

Quantity Value Units Method Reference Comment
Δr4.2 ± 0.3kcal/molPHPMSHiraoka and Nakajima, 1988gas phase; M
Δr3.5kcal/molHPMSSpeller and Fitaire, 1983gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr19.6cal/mol*KPHPMSHiraoka and Nakajima, 1988gas phase; M
Δr12.1cal/mol*KHPMSSpeller and Fitaire, 1983gas phase; Entropy change is questionable; M

(Oxygen cation • Nitrogen) + Nitrogen = (Oxygen cation • 2Nitrogen)

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

Quantity Value Units Method Reference Comment
Δr4.5 ± 0.3kcal/molPHPMSHiraoka and Nakajima, 1988gas phase; M
Δr4.3kcal/molHPMSSpeller and Fitaire, 1983gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr19.1cal/mol*KPHPMSHiraoka and Nakajima, 1988gas phase; M
Δr13.8cal/mol*KHPMSSpeller and Fitaire, 1983gas phase; Entropy change is questionable; M

(Nitric oxide anion • Nitrogen) + Nitrogen = (Nitric oxide anion • 2Nitrogen)

By formula: (NO- • N2) + N2 = (NO- • 2N2)

Quantity Value Units Method Reference Comment
Δr4.2 ± 0.3kcal/molPHPMSHiraoka and Yamabe, 1989gas phase; M
Δr3.9kcal/molHPMSSpeller and Fitaire, 1983gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr17.4cal/mol*KPHPMSHiraoka and Yamabe, 1989gas phase; M
Δr12.6cal/mol*KHPMSSpeller and Fitaire, 1983gas phase; Entropy change is questionable; M

C3N2NiO3 (solution) = C3NiO3 (solution) + Nitrogen (solution)

By formula: C3N2NiO3 (solution) = C3NiO3 (solution) + N2 (solution)

Quantity Value Units Method Reference Comment
Δr10. ± 1.kcal/molKinSTurner, Simpson, et al., 1983solvent: Liquid krypton; The reaction enthalpy relies on the experimental value for the activation enthalpy, 10. ± 1. kcal/mol, and on the assumption that the activation enthalpy for product recombination is negligible Turner, Simpson, et al., 1983.; MS

N+ + Nitrogen = (N+ • Nitrogen)

By formula: N+ + N2 = (N+ • N2)

Quantity Value Units Method Reference Comment
Δr59.4kcal/molN/ANational Bureau of Standards, 1968gas phase; from ΔrH(f); M
Δr60.kcal/molEISaporoschenko, 1965gas phase; M
Δr59.kcal/molEIFranklin, Dibeler, et al., 1958gas phase; M

Enthalpy of reaction

ΔrH° (kcal/mol) T (K) Method Reference Comment
86.2 (+1.8,-0.) CIDHaynes, Freysinger, et al., 1995gas phase; guided ion beam CID; M

Copper ion (1+) + Nitrogen = (Copper ion (1+) • Nitrogen)

By formula: Cu+ + N2 = (Cu+ • N2)

Quantity Value Units Method Reference Comment
Δr6.2kcal/molHPMSEl-Shall, Schriver, et al., 1989gas phase; Cu+ from laser desrption; M
Quantity Value Units Method Reference Comment
Δr16.cal/mol*KHPMSEl-Shall, Schriver, et al., 1989gas phase; Cu+ from laser desrption; M
Quantity Value Units Method Reference Comment
Δr1.4kcal/molHPMSEl-Shall, Schriver, et al., 1989gas phase; Cu+ from laser desrption; M

(HN2+ • 2Nitrogen) + Nitrogen = (HN2+ • 3Nitrogen)

By formula: (HN2+ • 2N2) + N2 = (HN2+ • 3N2)

Quantity Value Units Method Reference Comment
Δr3.4 ± 0.3kcal/molPHPMSHiraoka and Mori, 1989gas phase; M
Δr3.8kcal/molPHPMSHiraoka, Saluja, et al., 1979gas phase; M
Quantity Value Units Method Reference Comment
Δr20.1cal/mol*KPHPMSHiraoka and Mori, 1989gas phase; M
Δr20.cal/mol*KPHPMSHiraoka, Saluja, et al., 1979gas phase; M

(HN2+ • 3Nitrogen) + Nitrogen = (HN2+ • 4Nitrogen)

By formula: (HN2+ • 3N2) + N2 = (HN2+ • 4N2)

Quantity Value Units Method Reference Comment
Δr3.3 ± 0.3kcal/molPHPMSHiraoka and Mori, 1989gas phase; M
Δr3.5kcal/molPHPMSHiraoka, Saluja, et al., 1979gas phase; M
Quantity Value Units Method Reference Comment
Δr21.2cal/mol*KPHPMSHiraoka and Mori, 1989gas phase; M
Δr20.cal/mol*KPHPMSHiraoka, Saluja, et al., 1979gas phase; M

(HN2+ • Nitrogen) + Nitrogen = (HN2+ • 2Nitrogen)

By formula: (HN2+ • N2) + N2 = (HN2+ • 2N2)

Quantity Value Units Method Reference Comment
Δr3.6 ± 0.3kcal/molPHPMSHiraoka and Mori, 1989gas phase; M
Δr4.0kcal/molPHPMSHiraoka, Saluja, et al., 1979gas phase; M
Quantity Value Units Method Reference Comment
Δr19.2cal/mol*KPHPMSHiraoka and Mori, 1989gas phase; M
Δr18.cal/mol*KPHPMSHiraoka, Saluja, et al., 1979gas phase; M

Sodium ion (1+) + Nitrogen = (Sodium ion (1+) • Nitrogen)

By formula: Na+ + N2 = (Na+ • N2)

Quantity Value Units Method Reference Comment
Δr8.0kcal/molFAPerry, Rowe, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
Δr18.6cal/mol*KFAPerry, Rowe, et al., 1980gas phase; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
2.2310.FAPerry, Rowe, et al., 1980gas phase; M
2.0310.DTBeyer and Keller, 1971gas phase; low E/N; M

HN2+ + Nitrogen = (HN2+ • Nitrogen)

By formula: HN2+ + N2 = (HN2+ • N2)

Quantity Value Units Method Reference Comment
Δr16.0kcal/molPHPMSHiraoka, Saluja, et al., 1979gas phase; M
Δr14.5kcal/molPHPMSMeot-Ner (Mautner) and Field, 1974gas phase; M
Quantity Value Units Method Reference Comment
Δr24.cal/mol*KPHPMSHiraoka, Saluja, et al., 1979gas phase; M
Δr20.4cal/mol*KPHPMSMeot-Ner (Mautner) and Field, 1974gas phase; M

C39H66N2O3P2W (solution) + Hydrogen (g) = C39H68O3P2W (solution) + Nitrogen (g)

By formula: C39H66N2O3P2W (solution) + H2 (g) = C39H68O3P2W (solution) + N2 (g)

Quantity Value Units Method Reference Comment
Δr4.40 ± 0.41kcal/molEqSGonzalez and Hoff, 1989solvent: Tetrahydrofuran; Temperature range: 288-308 K; MS

C39H66MoO3P3 (solution) + Nitrogen (g) = C39H66MoN2O3P2 (solution)

By formula: C39H66MoO3P3 (solution) + N2 (g) = C39H66MoN2O3P2 (solution)

Quantity Value Units Method Reference Comment
Δr-9.01 ± 0.60kcal/molEqSGonzalez and Hoff, 1989solvent: Tetrahydrofuran; Temperature range: 294-308 K; MS

(Hydronium cation • 2Nitrogen • 3Water) + Nitrogen = (Hydronium cation • 3Nitrogen • 3Water)

By formula: (H3O+ • 2N2 • 3H2O) + N2 = (H3O+ • 3N2 • 3H2O)

Quantity Value Units Method Reference Comment
Δr1.2kcal/molDTGheno and Fitaire, 1987gas phase; ΔrH, ΔrS approximate; M
Quantity Value Units Method Reference Comment
Δr6.4cal/mol*KDTGheno and Fitaire, 1987gas phase; ΔrH, ΔrS approximate; M

(Oxygen cation • 4Nitrogen) + Nitrogen = (Oxygen cation • 5Nitrogen)

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

Quantity Value Units Method Reference Comment
Δr2.7 ± 0.2kcal/molPHPMSHiraoka and Nakajima, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr16.2cal/mol*KPHPMSHiraoka and Nakajima, 1988gas phase; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
0.7184.HPMSSpeller and Fitaire, 1983gas phase; M

(Nitric oxide anion • 2Nitrogen) + Nitrogen = (Nitric oxide anion • 3Nitrogen)

By formula: (NO- • 2N2) + N2 = (NO- • 3N2)

Quantity Value Units Method Reference Comment
Δr3.8 ± 0.3kcal/molPHPMSHiraoka and Yamabe, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr16.8cal/mol*KPHPMSHiraoka and Yamabe, 1989gas phase; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
0.9204.HPMSSpeller, Fitaire, et al., 1983gas phase; M

(Nitric oxide anion • 3Nitrogen) + Nitrogen = (Nitric oxide anion • 4Nitrogen)

By formula: (NO- • 3N2) + N2 = (NO- • 4N2)

Quantity Value Units Method Reference Comment
Δr3.4 ± 0.3kcal/molPHPMSHiraoka and Yamabe, 1989gas phase; M
Quantity Value Units Method Reference Comment
Δr17.9cal/mol*KPHPMSHiraoka and Yamabe, 1989gas phase; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
0.4204.HPMSSpeller, Fitaire, et al., 1983gas phase; M

(Oxygen cation • 3Nitrogen) + Nitrogen = (Oxygen cation • 4Nitrogen)

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

Quantity Value Units Method Reference Comment
Δr4.0 ± 0.3kcal/molPHPMSHiraoka and Nakajima, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr22.5cal/mol*KPHPMSHiraoka and Nakajima, 1988gas phase; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
0.7204.HPMSSpeller and Fitaire, 1983gas phase; M

(Hydronium cation • 3Nitrogen • 2Water) + Nitrogen = (Hydronium cation • 4Nitrogen • 2Water)

By formula: (H3O+ • 3N2 • 2H2O) + N2 = (H3O+ • 4N2 • 2H2O)

Quantity Value Units Method Reference Comment
Δr3.kcal/molDTGheno and Fitaire, 1987gas phase; ΔrH, ΔrS approximate; M
Quantity Value Units Method Reference Comment
Δr12.cal/mol*KDTGheno and Fitaire, 1987gas phase; ΔrH, ΔrS approximate; M

(Nitric oxide anion • 9Nitrogen) + Nitrogen = (Nitric oxide anion • 10Nitrogen)

By formula: (NO- • 9N2) + N2 = (NO- • 10N2)

Quantity Value Units Method Reference Comment
Δr1.68kcal/molPHPMSHiraoka and Yamabe, 1989gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr19.cal/mol*KN/AHiraoka and Yamabe, 1989gas phase; Entropy change calculated or estimated; M

(HN2+ • 10Nitrogen) + Nitrogen = (HN2+ • 11Nitrogen)

By formula: (HN2+ • 10N2) + N2 = (HN2+ • 11N2)

Quantity Value Units Method Reference Comment
Δr1.72kcal/molPHPMSHiraoka and Mori, 1989gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr22.cal/mol*KN/AHiraoka and Mori, 1989gas phase; Entropy change calculated or estimated; M

O3- + Nitrogen = (O3- • Nitrogen)

By formula: O3- + N2 = (O3- • N2)

Quantity Value Units Method Reference Comment
Δr2.70 ± 0.20kcal/molTDAsHiraoka, 1988gas phase; B,M
Quantity Value Units Method Reference Comment
Δr18.4cal/mol*KPHPMSHiraoka, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr-2.80 ± 0.50kcal/molTDAsHiraoka, 1988gas phase; B

(C2H5+ • Nitrogen) + Nitrogen = (C2H5+ • 2Nitrogen)

By formula: (C2H5+ • N2) + N2 = (C2H5+ • 2N2)

Quantity Value Units Method Reference Comment
Δr4.6kcal/molHPMSSpeller, 1983gas phase; deuterated, Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr10.9cal/mol*KHPMSSpeller, 1983gas phase; deuterated, Entropy change is questionable; M

(Nitrogen cation • Nitrogen) + Nitrogen = (Nitrogen cation • 2Nitrogen)

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

Quantity Value Units Method Reference Comment
Δr2.8 ± 0.2kcal/molPHPMSHiraoka and Nakajima, 1988gas phase; M
Δr1.4kcal/molPILinn, Ono, et al., 1981gas phase; M
Quantity Value Units Method Reference Comment
Δr15.0cal/mol*KPHPMSHiraoka and Nakajima, 1988gas phase; M

(Oxygen cation • Oxygen) + Nitrogen = (Oxygen cation • Nitrogen • Oxygen)

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

Quantity Value Units Method Reference Comment
Δr2.9kcal/molHPMSSpeller and Fitaire, 1983gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr10.1cal/mol*KHPMSSpeller and Fitaire, 1983gas phase; Entropy change is questionable; M

(Sodium ion (1+) • Nitrogen) + Nitrogen = (Sodium ion (1+) • 2Nitrogen)

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

Quantity Value Units Method Reference Comment
Δr5.3kcal/molFAPerry, Rowe, et al., 1980gas phase; M
Quantity Value Units Method Reference Comment
Δr16.8cal/mol*KFAPerry, Rowe, et al., 1980gas phase; M

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
-0.3310.FAPerry, Rowe, et al., 1980gas phase; M

(CH2N+ • 2Nitrogen) + Nitrogen = (CH2N+ • 3Nitrogen)

By formula: (CH2N+ • 2N2) + N2 = (CH2N+ • 3N2)

Quantity Value Units Method Reference Comment
Δr3.2kcal/molHPMSSpeller, Fitaire, et al., 1982gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr13.1cal/mol*KHPMSSpeller, Fitaire, et al., 1982gas phase; Entropy change is questionable; M

(CH2N+ • 3Nitrogen) + Nitrogen = (CH2N+ • 4Nitrogen)

By formula: (CH2N+ • 3N2) + N2 = (CH2N+ • 4N2)

Quantity Value Units Method Reference Comment
Δr3.1kcal/molHPMSSpeller, Fitaire, et al., 1982gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr13.8cal/mol*KHPMSSpeller, Fitaire, et al., 1982gas phase; Entropy change is questionable; M

(CH2N+ • 4Nitrogen) + Nitrogen = (CH2N+ • 5Nitrogen)

By formula: (CH2N+ • 4N2) + N2 = (CH2N+ • 5N2)

Quantity Value Units Method Reference Comment
Δr3.2kcal/molHPMSSpeller, Fitaire, et al., 1982gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr15.2cal/mol*KHPMSSpeller, Fitaire, et al., 1982gas phase; Entropy change is questionable; M

2,5-Pyrrolidinedione, 1-bromo- + 0.5Hydrazine = Hydrogen bromide + Succinimide + 0.5Nitrogen

By formula: C4H4BrNO2 + 0.5H4N2 = HBr + C4H5NO2 + 0.5N2

Quantity Value Units Method Reference Comment
Δr-62.22 ± 0.11kcal/molCmHoward and Skinner, 1966solid phase; solvent: Aqueous solution; Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -62.55 ± 0.11 kcal/mol; ALS

Oxygen anion + Nitrogen = (Oxygen anion • Nitrogen)

By formula: O2- + N2 = (O2- • N2)

Quantity Value Units Method Reference Comment
Δr6.0 ± 1.0kcal/molN/APosey and Johnson, 1988gas phase; B
Δr<13.60kcal/molIMRBAdams and Bohme, 1970gas phase; N2..O2- + O2 -> O4-; B

C12H34P4Ru (solution) + Nitrogen (solution) = C12H32N2P4Ru (solution) + Hydrogen (solution)

By formula: C12H34P4Ru (solution) + N2 (solution) = C12H32N2P4Ru (solution) + H2 (solution)

Quantity Value Units Method Reference Comment
Δr3.90kcal/molPACBelt, Scaiano, et al., 1993solvent: Cyclohexane; The reaction enthalpy relies on 0.85 for the quantum yield of H2 dissociation.; MS

(Hydronium cation • 2Nitrogen • 2Water) + Nitrogen = (Hydronium cation • 3Nitrogen • 2Water)

By formula: (H3O+ • 2N2 • 2H2O) + N2 = (H3O+ • 3N2 • 2H2O)

Quantity Value Units Method Reference Comment
Δr9.0 ± 2.7kcal/molDTGheno and Fitaire, 1987gas phase; M
Quantity Value Units Method Reference Comment
Δr28.4cal/mol*KDTGheno and Fitaire, 1987gas phase; M

Vanadium, tetracarbonyl(η5-2,4-cyclopentadien-1-yl)- (solution) + Nitrogen (solution) = C8H5N2O3V (solution) + Carbon monoxide (solution)

By formula: C9H5O4V (solution) + N2 (solution) = C8H5N2O3V (solution) + CO (solution)

Quantity Value Units Method Reference Comment
Δr6.5 ± 1.kcal/molPACJohnson, Popov, et al., 1991solvent: Heptane; The reaction enthalpy relies on 0.80 for the quantum yield of CO dissociation.; MS

(Oxygen anion • 2Nitrogen • Oxygen) + Nitrogen = (Oxygen anion • 3Nitrogen • Oxygen)

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

Quantity Value Units Method Reference Comment
Δr2.5 ± 0.2kcal/molPHPMSHiraoka, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr18.3cal/mol*KPHPMSHiraoka, 1988gas phase; M

(Oxygen anion • 3Nitrogen • Oxygen) + Nitrogen = (Oxygen anion • 4Nitrogen • Oxygen)

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

Quantity Value Units Method Reference Comment
Δr2.2 ± 0.2kcal/molPHPMSHiraoka, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr18.7cal/mol*KPHPMSHiraoka, 1988gas phase; M

(Oxygen anion • 4Nitrogen • Oxygen) + Nitrogen = (Oxygen anion • 5Nitrogen • Oxygen)

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

Quantity Value Units Method Reference Comment
Δr1.9 ± 0.2kcal/molPHPMSHiraoka, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr19.5cal/mol*KPHPMSHiraoka, 1988gas phase; M

(Oxygen anion • 5Nitrogen • Oxygen) + Nitrogen = (Oxygen anion • 6Nitrogen • Oxygen)

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

Quantity Value Units Method Reference Comment
Δr1.8 ± 0.2kcal/molPHPMSHiraoka, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr19.5cal/mol*KPHPMSHiraoka, 1988gas phase; M

(Oxygen anion • 6Nitrogen • Oxygen) + Nitrogen = (Oxygen anion • 7Nitrogen • Oxygen)

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

Quantity Value Units Method Reference Comment
Δr1.7 ± 0.2kcal/molPHPMSHiraoka, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr18.8cal/mol*KPHPMSHiraoka, 1988gas phase; M

(Oxygen anion • Nitrogen • Oxygen) + Nitrogen = (Oxygen anion • 2Nitrogen • Oxygen)

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

Quantity Value Units Method Reference Comment
Δr2.8 ± 0.2kcal/molPHPMSHiraoka, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr17.9cal/mol*KPHPMSHiraoka, 1988gas phase; M

(Hydronium cation • 2Nitrogen • Water) + Nitrogen = (Hydronium cation • 3Nitrogen • Water)

By formula: (H3O+ • 2N2 • H2O) + N2 = (H3O+ • 3N2 • H2O)

Quantity Value Units Method Reference Comment
Δr8. ± 2.kcal/molDTGheno and Fitaire, 1987gas phase; M
Quantity Value Units Method Reference Comment
Δr22.cal/mol*KDTGheno and Fitaire, 1987gas phase; M

(Hydronium cation • Nitrogen • 2Water) + Nitrogen = (Hydronium cation • 2Nitrogen • 2Water)

By formula: (H3O+ • N2 • 2H2O) + N2 = (H3O+ • 2N2 • 2H2O)

Quantity Value Units Method Reference Comment
Δr5.2kcal/molDTGheno and Fitaire, 1987gas phase; M
Quantity Value Units Method Reference Comment
Δr16.6cal/mol*KDTGheno and Fitaire, 1987gas phase; M

(Hydronium cation • Nitrogen • 3Water) + Nitrogen = (Hydronium cation • 2Nitrogen • 3Water)

By formula: (H3O+ • N2 • 3H2O) + N2 = (H3O+ • 2N2 • 3H2O)

Quantity Value Units Method Reference Comment
Δr4.4kcal/molDTGheno and Fitaire, 1987gas phase; M
Quantity Value Units Method Reference Comment
Δr15.7cal/mol*KDTGheno and Fitaire, 1987gas phase; M

(Oxygen cation • 10Nitrogen) + Nitrogen = (Oxygen cation • 11Nitrogen)

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

Quantity Value Units Method Reference Comment
Δr1.4 ± 0.3kcal/molPHPMSHiraoka and Nakajima, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr20.2cal/mol*KPHPMSHiraoka and Nakajima, 1988gas phase; M

(Nitrogen cation • 10Nitrogen) + Nitrogen = (Nitrogen cation • 11Nitrogen)

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

Quantity Value Units Method Reference Comment
Δr1.7 ± 0.2kcal/molPHPMSHiraoka and Nakajima, 1988gas phase; M
Quantity Value Units Method Reference Comment
Δr20.2cal/mol*KPHPMSHiraoka and Nakajima, 1988gas phase; M

Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Phase change 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

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Origin D.HENNEBERG, MAX-PLANCK INSTITUTE, MULHEIM, WEST GERMANY
NIST MS number 61309

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References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

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Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), References