Dinitrogen tetroxide

• Formula: N₂O₄
• Molecular weight: 92.0110
• IUPAC Standard InChI: InChI=1S/N2O4/c3-1(4)2(5)6 Copy

  
• IUPAC Standard InChIKey: WFPZPJSADLPSON-UHFFFAOYSA-N Copy
• CAS Registry Number: 10544-72-6
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Other names: dinitrogen tetraoxide
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• Information on this page:
  • Gas phase thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Reaction thermochemistry data
  • Henry's Law data
  • Vibrational and/or electronic energy levels
• Data at other public NIST sites:
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Gas phase thermochemistry data

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

Gas Phase Heat Capacity (Shomate Equation)

C_p° = 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
    C_p = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Gas phase ion energetics data

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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:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

References

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Notes

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

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Frost, McDowell, et al., 1977
Frost, D.C.; McDowell, C.A.; Westwood, N.P.C., The photoelectron spectrum of dinitrogen tetroxide, J. Electron Spectrosc. Relat. Phenom., 1977, 10, 293. [all data]

Chong, Frost, et al., 1982
Chong, D.P.; Frost, D.C.; Lau, W.M.; McDowell, C.A., Shake-up satellites in HeI photoelectron spectra: N₂O₄ and CH₃NO, Chem. Phys. Lett., 1982, 90, 332. [all data]

Nomoto, Achiba, et al., 1979
Nomoto, K.; Achiba, Y.; Kimura, K., HeII(304 Å) photoelectron spectrum of N₂O₄, Chem. Phys. Lett., 1979, 63, 277. [all data]

Nomoto, Achiba, et al., 1979, 2
Nomoto, K.; Achiba, Y.; Kimura, K., HeI and HeII photoelectron study of N₂O₄, Bull. Chem. Soc. Jpn., 1979, 52, 1614. [all data]

Gan, Peel, et al., 1977
Gan, T.H.; Peel, J.B.; Willett, G.D., Reinterpretation of the photoelectron spectrum of dinitrogen tetroxide, J. Chem. Soc. Faraday Trans. 2, 1977, 73, 1459. [all data]

Yamazaki and Kimura, 1976
Yamazaki, T.; Kimura, K., He I photoelectron spectrum of dinitrogen tetraoxide (N₂O₄), Chem. Phys. Lett., 1976, 43, 502. [all data]

Ames and Turner, 1976
Ames, D.L.; Turner, D.W., Photoelectron spectroscopic studies of dinitrogen tetroxide and dinitrogen pentoxide, Proc. R. Soc. London A:, 1976, 348, 175. [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References

• Symbols used in this document:
  

  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  ΔfH°gas	Enthalpy of formation of gas at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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