3-Penten-2-one, 4-methyl-

• Formula: C₆H₁₀O
• Molecular weight: 98.1430
• IUPAC Standard InChI: InChI=1S/C6H10O/c1-5(2)4-6(3)7/h4H,1-3H3 Copy

  
• IUPAC Standard InChIKey: SHOJXDKTYKFBRD-UHFFFAOYSA-N Copy
• CAS Registry Number: 141-79-7
• 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: Acetone, isopropylidene-; Isobutenyl methyl ketone; Isopropylideneacetone; Mesityl oxide; Methyl isobutenyl ketone; Methyl 2-methyl-1-propenyl ketone; 4-Methyl-3-penten-2-one; (CH3)2C=CHC(=O)CH3; Methyl 2,2-dimethylvinyl ketone; 4-Methyl-3-pentene-2-one; 2-Methylpent-2-en-4-one; 2-Methyl-2-penten-4-one; Mesityloxid; Mesityloxyde; MIBK; Ossido di mesitile; Oxyde de mesityle; 3-Isohexen-2-one; 4-Methyl-3-penten-2-on; 4-Methylpent-3-en-2-one; 4-Metil-3-penten-2-one; 2-Methyl-2-pentenone-4; UN 1229; 2-Methyl-4-oxo-2-pentene; 2,2-Dimethylvinyl methyl ketone; NSC 38717; 4-methyl-3-penten-2-one (mesityl oxide)
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• Information on this page:
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Gas Chromatography
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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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard

View reactions leading to C₆H₁₀O⁺ (ion structure unspecified)

Ionization energy determinations

Appearance energy determinations

References

Go To: Top, 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.

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]

Masclet and Mouvier, 1978
Masclet, P.; Mouvier, G., Etude par spectrometrie photoelectronique d'aldehydes et de cetones ethyleniques conjugues, J. Electron Spectrosc. Relat. Phenom., 1978, 14, 77. [all data]

Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J., Ionization potentials of some molecules, J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]

Omura, Higasi, et al., 1956
Omura, I.; Higasi, K.; Baba, H., Ionization potentials of some organic molecules. II. Aliphatic compounds, Bull. Chem. Soc. Japan, 1956, 29, 504. [all data]

Alai, Attardo, et al., 1985
Alai, M.; Attardo, G.G.; Rye, R.T.B., Formation threshold structures of some [C₅H₇O]⁺ ions: Use of general schemes for estimation of heats of formation of gas phase ions, Can. J. Chem., 1985, 63, 833. [all data]

Notes

Go To: Top, Gas phase ion energetics data, References

• Symbols used in this document:
  

  AE	Appearance energy
  IE (evaluated)	Recommended ionization energy

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