Ethanone, 1-cyclopropyl-

• Formula: C₅H₈O
• Molecular weight: 84.1164
• IUPAC Standard InChI: InChI=1S/C5H8O/c1-4(6)5-2-3-5/h5H,2-3H2,1H3 Copy

  
• IUPAC Standard InChIKey: HVCFCNAITDHQFX-UHFFFAOYSA-N Copy
• CAS Registry Number: 765-43-5
• 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: Ketone, cyclopropyl methyl; Acetylcyclopropane; Cyclopropyl methyl ketone; Methyl cyclopropyl ketone; 1-Cyclopropylethanone; NSC 1940
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• Information on this page:
  • Gas phase thermochemistry data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Ion clustering data
  • IR Spectrum
  • 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

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
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

De-protonation reactions

C₅H₇O^- +  =

By formula: C₅H₇O^- + H⁺ = C₅H₈O

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

References

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes

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

Kozina, Timofeeva, et al., 1984
Kozina, M.P.; Timofeeva, L.P.; Gal'chenko, G.L.; Balenkova, E.S.; Ordubadi, M.D., Enthalpies of combustion and formation of 1-methylnorcamphor and methylcyclopropyl ketone, Moscow Univ. Chem. Bull. (Engl. Transl.), 1984, 25, 41-45. [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]

Al-Khafaji and Shanshal, 1977
Al-Khafaji, J.A.; Shanshal, M., The photoelectron spectra of cyclopropyl ketones, Z. Naturforsch. A:, 1977, 32, 109. [all data]

Kelder, Cerfontain, et al., 1974
Kelder, J.; Cerfontain, H.; Higginson, B.R.; Lloyd, D.R., Photoelectron and ultraviolet absorption spectra of cyclopropyl conjugated 1,2-diketones, Tetrahedron Lett., 1974, 739. [all data]

Brickhouse and Squires, 1988
Brickhouse, M.D.; Squires, R.R., Gas Phase Bronsted vs. Lewis Acid-Base Reactions of 6,6-Dimethylfulvene. A Sensitive Probe of the Electronic Structures of Organic Anions, J. Am. Chem. Soc., 1988, 110, 9, 2706, https://doi.org/10.1021/ja00217a002 . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  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

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