Methylacrylonitrile

• Formula: C₄H₅N
• Molecular weight: 67.0892
• IUPAC Standard InChI: InChI=1S/C4H5N/c1-4(2)3-5/h1H2,2H3 Copy

  
• IUPAC Standard InChIKey: GYCMBHHDWRMZGG-UHFFFAOYSA-N Copy
• CAS Registry Number: 126-98-7
• 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: 2-Propenenitrile, 2-methyl-; Methacrylonitrile; α-Methacrylonitrile; α-Methylacrylonitrile; Isopropene cyanide; Isopropenylnitrile; 2-Cyano-1-propene; 2-Cyanopropene; 2-Methyl-2-propenenitrile; 2-Methylacrylonitrile; 2-Methylpropenenitrile; CH2C(CH3)CN; 2-Cyanopropene-1; USAF ST-40; Rcra waste number U152; 1-Methyl-1-cyanoethylene; Propenenitrile, 2-methyl; NSC 24145
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• Information on this page:
  • Phase change data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Reaction thermochemistry data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

Antoine Equation Parameters

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

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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:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Electron affinity determinations

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₄H₄N^- +  =

By formula: C₄H₄N^- + H⁺ = C₄H₅N

References

Go To: Top, Phase change 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.

Stephenson, 1994
Stephenson, R.M., Mutual Solubility of Water and Nitriles, J. Chem. Eng. Data, 1994, 39, 225-7. [all data]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Desfrancois, Abdoul-Carime, et al., 1994
Desfrancois, C.; Abdoul-Carime, H.; Khelifa, N.; Schermann, J.P., Fork 1/r to 1/r2 Potentials: Electron Exchange between Rydberg Atoms and Polar Molecules, Phys. Rev. Lett., 1994, 73, 18, 2436, https://doi.org/10.1103/PhysRevLett.73.2436 . [all data]

Willett and Baer, 1980
Willett, G.D.; Baer, T., Thermochemistry and dissociation dynamics of state-selected C₄H₄X ions. 3. C₄H₅N⁺, J. Am. Chem. Soc., 1980, 102, 6774. [all data]

Koenig, Snell, et al., 1976
Koenig, T.; Snell, W.; Chang, J.C., The He(I) photoelectron spectra of benzyl and α-cyanoisopropyl radicals, Tetrahedron Lett., 1976, 50, 4569. [all data]

Houk and Munchausen, 1976
Houk, K.N.; Munchausen, L.L., Ionization potentials, electron affinities, reactivities of cyanoalkenes related electron-deficient alkenes. A frontier molecular orbital treatment of cyanoalkene reactivities in cycloaddition, electrophilic, nucleophilic, and radical reactions., J. Am. Chem. Soc., 1976, 98, 937. [all data]

Sakurai and Jennings, 1981
Sakurai, H.; Jennings, K.R., A study of the structures of decomposing and non-decomposing [C₄H₅N]⁺ ions formed from different neutral species, Org. Mass Spectrom., 1981, 16, 393. [all data]

Bartmess and Burnham, 1984
Bartmess, J.E.; Burnham, R., Effect of central substituents on the gas phase acidities of propenes, J. Org. Chem., 1984, 49, 1382. [all data]

Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  EA	Electron affinity
  Tboil	Boiling point
  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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