Nitric oxide

• Formula: NO
• Molecular weight: 30.0061
• IUPAC Standard InChI: InChI=1S/NO/c1-2 Copy

  
• IUPAC Standard InChIKey: MWUXSHHQAYIFBG-UHFFFAOYSA-N Copy
• CAS Registry Number: 10102-43-9
• 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; Nitrogen monoxide; Nitrosyl radical; NO; Amidogen, oxo-; Nitrogen oxide (NO); UN 1660
• 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
  • Ion clustering data
  • References
  • Notes
• Other data available:
  • Henry's Law data
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Constants of diatomic molecules
• Data at other public NIST sites:
  • Microwave spectra (on physics lab web site)
  • Electron-Impact Ionization Cross Sections (on physics web site)
  • Gas Phase Kinetics Database
• Options:
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Data at NIST subscription sites:

• NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data)
• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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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 by: William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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.

Individual Reactions

 +  = ( • )

By formula: NO^- + NO = (NO^- • NO)

Free energy of reaction

( • ) +  = ( • 2)

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

Free energy of reaction

( • ) +  = ( • 2)

By formula: (Ni⁺ • NO) + NO = (Ni⁺ • 2NO)

Enthalpy of reaction

 +  = ( • )

By formula: Ni⁺ + NO = (Ni⁺ • NO)

Enthalpy of reaction

( • 2) +  = ( • 3)

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

( • 3) +  = ( • 4)

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

( • 4) +  = ( • 5)

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

=  + 

By formula: C₂H₅NO₂ = NO + C₂H₅O

Ion clustering 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: 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. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

 +  = ( • )

By formula: NO^- + NO = (NO^- • NO)

Free energy of reaction

( • ) +  = ( • 2)

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

Free energy of reaction

( • 2) +  = ( • 3)

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

( • 3) +  = ( • 4)

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

( • 4) +  = ( • 5)

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

 +  = ( • )

By formula: Ni⁺ + NO = (Ni⁺ • NO)

Enthalpy of reaction

( • ) +  = ( • 2)

By formula: (Ni⁺ • NO) + NO = (Ni⁺ • 2NO)

Enthalpy of reaction

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Ion clustering 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]

Johnston and Giauque, 1929
Johnston, H.L.; Giauque, W.F., THE HEAT CAPACITY OF NITRIC OXIDE FROM 14°K. TO THE BOILING POINT AND THE HEAT OF VAPORIZATION. VAPOR PRESSURES OF SOLID AND LIQUID PHASES. THE ENTROPY FROM SPECTROSCOPIC DATA, J. Am. Chem. Soc., 1929, 51, 11, 3194-3214, https://doi.org/10.1021/ja01386a004 . [all data]

Linn, Ono, et al., 1981
Linn, S.H.; Ono, Y.; Ng, C.Y., Molecular Beam Photoionization Study of CO, N2, and NO Dimers and Clusters, J. Chem. Phys., 1981, 74, 6, 3342, https://doi.org/10.1063/1.441486 . [all data]

Ng, Tiedemann, et al., 1977
Ng, C.Y.; Tiedemann, P.W.; Mahan, B.H.; Lee, Y.T., The Binding Energy between NO and NO+, J. Chem. Phys., 1977, 66, 9, 3985, https://doi.org/10.1063/1.434450 . [all data]

Puckett and Teague, 1971
Puckett, L.J.; Teague, A.W., Production of H3O+.nH2O from NO+ Precursor in NO - H2O Gas Mixtures, J. Chem. Phys., 1971, 54, 6, 2564, https://doi.org/10.1063/1.1675213 . [all data]

Khan, Steele, et al., 1995
Khan, F.A.; Steele, D.L.; Armentrout, P.B., Ligand effects in organometallic thermochemistry: The sequential bond energies of Ni(CO)_x⁺ and Ni(N₂)_x⁺ (x = 1-4) and Ni(NO)_x⁺ (x = 1-3) [Data derived from reported bond energies taking value of 8.273±0.046 eV for IE[Ni(CO)₄]], J. Phys. Chem., 1995, 99, 7819. [all data]

Rebbert and Laidler, 1952
Rebbert, R.E.; Laidler, K.J., Kinetics of the decomposition of diethyl peroxide, J. Chem. Phys., 1952, 20, 574-577. [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
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization

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