Isobutyronitrile

• Formula: C₄H₇N
• Molecular weight: 69.1051
• IUPAC Standard InChI: InChI=1S/C4H7N/c1-4(2)3-5/h4H,1-2H3 Copy

  
• IUPAC Standard InChIKey: LRDFRRGEGBBSRN-UHFFFAOYSA-N Copy
• CAS Registry Number: 78-82-0
• 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: Propanenitrile, 2-methyl-; Isopropyl cyanide; Isopropylnitrile; 1-Cyano-1-methylethane; 2-Cyanopropane; 2-Methylpropanenitrile; 2-Methylpropionitrile; iso-C3H7CN; Dimethylacetonitrile; Isopropylkyanid; UN 2284; α-Methylpropanenitrile; NSC 60536
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• Information on this page:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
• 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

Condensed 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of liquid

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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - 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 by: John E. Bartmess

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

C₄H₆N^- +  =

By formula: C₄H₆N^- + H⁺ = C₄H₇N

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

Data compiled as indicated in comments:
B - John E. Bartmess
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

C₄H₆N^- +  =

By formula: C₄H₆N^- + H⁺ = C₄H₇N

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction 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.

Hall and Baldt, 1971
Hall, H.K., Jr.; Baldt, J.H., Thermochemistry of strained-ring bridgehead nitriles and esters, J. Am. Chem. Soc., 1971, 93, 140-145. [all data]

Evans and Skinner, 1959
Evans, F.W.; Skinner, H.A., The heats of combustion of organic compounds of nitrogen Part 2.-n-Propyl, isopropyl and phenyl cyandies, Trans. Faraday Soc., 1959, 55, 255-259. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Timmermans, 1952
Timmermans, J., Freezing points of organic compounds. VVI New determinations., Bull. Soc. Chim. Belg., 1952, 61, 393. [all data]

Timmermans and Delcourt, 1934
Timmermans, J.; Delcourt, Y., Work of the International Bureau of Physico-Chemical Standards.VI. Physical Constants of Twenty Organic Compounds., J. Chim. Phys. Phys.-Chim. Biol., 1934, 31, 85-121. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

Howard and Wadso, 1970
Howard, P.B.; Wadso, I., Enthalpies of vaporization of organic compounds IV. Alkyl Nitriles, Acta Chem. Scand., 1970, 24, 145. [all data]

Sukhova, Vlasov, et al., 1979
Sukhova, S.I.; Vlasov, O.N.; Li, L.V., Nov. Khim. Sredstva Azsch Rast., 1979, 51. [all data]

Baldt and Hall, 1971
Baldt, J.H.; Hall, H.K.K., Jr., Thermochemistry of strained-ring bridgehead nitriles and esters, J. Am. Chem. Soc., 1971, 93, 140-145. [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Hammer, Diri, et al., 2003
Hammer, N.I.; Diri, K.; Jordan, K.D.; Desfrancois, C.; Compton, R.N., Dipole-bound anions of carbonyl, nitrile, and sulfoxide containing molecules, J. Chem. Phys., 2003, 119, 7, 3650-3660, https://doi.org/10.1063/1.1590959 . [all data]

Ohno, Matumoto, et al., 1984
Ohno, K.; Matumoto, S.; Imai, K.; Haraa, Y., Penning ionization electron spectroscopy of nitriles, J. Phys. Chem., 1984, 88, 206. [all data]

Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S., Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [all data]

Heerma and deRidder, 1970
Heerma, W.; deRidder, J.J., The electron-impact induced fragmentation of some alkyl isocyanides and alpha-branched alkyl cyanides, Org. Mass Spectrom., 1970, 3, 1439. [all data]

Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  Cp,liquid	Constant pressure heat capacity of liquid
  EA	Electron affinity
  Tboil	Boiling point
  Tfus	Fusion (melting) point
  ΔcH°liquid	Enthalpy of combustion of liquid at standard conditions
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔfH°liquid	Enthalpy of formation of liquid at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions

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