Methane, nitro-

• Formula: CH₃NO₂
• Molecular weight: 61.0400
• IUPAC Standard InChI: InChI=1S/CH3NO2/c1-2(3)4/h1H3 Copy

  
• IUPAC Standard InChIKey: LYGJENNIWJXYER-UHFFFAOYSA-N Copy
• CAS Registry Number: 75-52-5
• 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: Nitromethane; Nitrocarbol; CH3NO2; Nitrometan; UN 1261; NM; NSC 428
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Henry's Law data
  • Ion clustering data
  • IR Spectrum
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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.

Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Phase change 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of vaporization

Enthalpy of vaporization

Δ_vapH = A exp(-βT_r) (1 − T_r)^β
    Δ_vapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
    T_r = reduced temperature (T / T_c)

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Entropy of vaporization

Antoine Equation Parameters

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

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Enthalpy of fusion

Entropy of fusion

Reaction 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.

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

CH₂NO₂^- +  =

By formula: CH₂NO₂^- + H⁺ = CH₃NO₂

 +  = ( • )

By formula: Cl^- + CH₃NO₂ = (Cl^- • CH₃NO₂)

( • ) +  = ( • 2)

By formula: (Cl^- • CH₃NO₂) + CH₃NO₂ = (Cl^- • 2CH₃NO₂)

 +  = ( • )

By formula: NO₂^- + CH₃NO₂ = (NO₂^- • CH₃NO₂)

C₆H₇N⁺ +  = (C₆H₇N⁺ • )

By formula: C₆H₇N⁺ + CH₃NO₂ = (C₆H₇N⁺ • CH₃NO₂)

Free energy of reaction

(CH₃NO₂^- • ) +  = (CH₃NO₂^- • 2)

By formula: (CH₃NO₂^- • CH₃NO₂) + CH₃NO₂ = (CH₃NO₂^- • 2CH₃NO₂)

CH₆N⁺ +  = (CH₆N⁺ • )

By formula: CH₆N⁺ + CH₃NO₂ = (CH₆N⁺ • CH₃NO₂)

Bond type: Hydrogen bonds of the type NH+-O between organics

CH₂NO₂^- +  = C₂H₅N₂O₄^-

By formula: CH₂NO₂^- + CH₃NO₂ = C₂H₅N₂O₄^-

C₃H₉N₃O₆^- + 3 = C₄H₁₂N₄O₈^-

By formula: C₃H₉N₃O₆^- + 3CH₃NO₂ = C₄H₁₂N₄O₈^-

C₂H₅N₂O₄^- + 2 = C₃H₈N₃O₆^-

By formula: C₂H₅N₂O₄^- + 2CH₃NO₂ = C₃H₈N₃O₆^-

C₃H₈N₃O₆^- + 3 = C₄H₁₁N₄O₈^-

By formula: C₃H₈N₃O₆^- + 3CH₃NO₂ = C₄H₁₁N₄O₈^-

C₄H₁₁N₄O₈^- + 4 = C₅H₁₄N₅O₁₀^-

By formula: C₄H₁₁N₄O₈^- + 4CH₃NO₂ = C₅H₁₄N₅O₁₀^-

C₂H₆N₂O₆^- + 2 = C₃H₉N₃O₈^-

By formula: C₂H₆N₂O₆^- + 2CH₃NO₂ = C₃H₉N₃O₈^-

C₄H₁₂N₄O₈^- + 4 = C₅H₁₅N₅O₁₀^-

By formula: C₄H₁₂N₄O₈^- + 4CH₃NO₂ = C₅H₁₅N₅O₁₀^-

C₃H₉N₃O₈^- + 3 = C₄H₁₂N₄O₁₀^-

By formula: C₃H₉N₃O₈^- + 3CH₃NO₂ = C₄H₁₂N₄O₁₀^-

CH₃N₂O₄^- + 2 = C₂H₆N₃O₆^-

By formula: CH₃N₂O₄^- + 2CH₃NO₂ = C₂H₆N₃O₆^-

C₂H₆ClN₂O₄^- + 3 = C₃H₉ClN₃O₆^-

By formula: C₂H₆ClN₂O₄^- + 3CH₃NO₂ = C₃H₉ClN₃O₆^-

C₁₁H₁₀⁺ +  = (C₁₁H₁₀⁺ • )

By formula: C₁₁H₁₀⁺ + CH₃NO₂ = (C₁₁H₁₀⁺ • CH₃NO₂)

C₂H₆N₃O₆^- + 3 = C₃H₉N₄O₈^-

By formula: C₂H₆N₃O₆^- + 3CH₃NO₂ = C₃H₉N₄O₈^-

C₃H₉N₄O₈^- + 4 = C₄H₁₂N₅O₁₀^-

By formula: C₃H₉N₄O₈^- + 4CH₃NO₂ = C₄H₁₂N₅O₁₀^-

C₅H₁₀NO₂⁺ +  = (C₅H₁₀NO₂⁺ • )

By formula: C₅H₁₀NO₂⁺ + CH₃NO₂ = (C₅H₁₀NO₂⁺ • CH₃NO₂)

C₅H₁₂NO₂⁺ +  = (C₅H₁₂NO₂⁺ • )

By formula: C₅H₁₂NO₂⁺ + CH₃NO₂ = (C₅H₁₂NO₂⁺ • CH₃NO₂)

C₃H₉ClN₃O₆^- + 4 = C₄H₁₂ClN₄O₈^-

By formula: C₃H₉ClN₃O₆^- + 4CH₃NO₂ = C₄H₁₂ClN₄O₈^-

C₄H₁₂N₄O₁₀^- + 4 = C₅H₁₅N₅O₁₂^-

By formula: C₄H₁₂N₄O₁₀^- + 4CH₃NO₂ = C₅H₁₅N₅O₁₂^-

 +  = ( • )

By formula: Li⁺ + CH₃NO₂ = (Li⁺ • CH₃NO₂)

CH₃NO₂^- +  = (CH₃NO₂^- • )

By formula: CH₃NO₂^- + CH₃NO₂ = (CH₃NO₂^- • CH₃NO₂)

 +  = CH₃BrNO₂^-

By formula: Br^- + CH₃NO₂ = CH₃BrNO₂^-

 +  = ( • )

By formula: I^- + CH₃NO₂ = (I^- • CH₃NO₂)

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

Data compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Electron affinity determinations

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

CH₂NO₂^- +  =

By formula: CH₂NO₂^- + H⁺ = CH₃NO₂

Mass spectrum (electron ionization)

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

Spectrum

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Additional Data

UV/Visible spectrum

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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 by: Victor Talrose, Eugeny B. Stern, Antonina A. Goncharova, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina

Spectrum

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Additional Data

Gas Chromatography

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

Kovats' RI, non-polar column, isothermal

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Kovats' RI, non-polar column, custom temperature program

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Kovats' RI, polar column, isothermal

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Kovats' RI, polar column, custom temperature program

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Normal alkane RI, non-polar column, temperature ramp

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

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Normal alkane RI, polar column, temperature ramp

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Normal alkane RI, polar column, custom temperature program

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References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, 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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Sieck, 1985
Sieck, L.W., Thermochemistry of Solvation of NO₂^- and C₆H₅NO₂^- by Polar Molecules in the Vapor Phase. Comparison with Cl^- and Variation with Ligand Structure., J. Phys. Chem., 1985, 89, 25, 5552, https://doi.org/10.1021/j100271a049 . [all data]

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Adams, Schneider, et al., 2009
Adams, C.L.; Schneider, H.; Ervin, K.M.; Weber, J.M., Low-energy photoelectron imaging spectroscopy of nitromethane anions: Electron affinity, vibrational features, anisotropies, and the dipole-bound state, J. Chem. Phys., 2009, 130, 7, 074307, https://doi.org/10.1063/1.3076892 . [all data]

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Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, References

• Symbols used in this document:
  

  AE	Appearance energy
  EA	Electron affinity
  IE (evaluated)	Recommended ionization energy
  Pc	Critical pressure
  T	Temperature
  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions
  ΔvapS	Entropy of vaporization
  ρc	Critical density

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