CH2=C

• Formula: C₂H₂
• Molecular weight: 26.0373
• IUPAC Standard InChI: InChI=1S/C2H2/c1-2/h1H2 Copy

  
• IUPAC Standard InChIKey: SNVLJLYUUXKWOJ-UHFFFAOYSA-N Copy
• CAS Registry Number: 2143-69-3
• Chemical structure:
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• Information on this page:
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Vibrational and/or electronic energy levels
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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 by: John E. Bartmess

View reactions leading to C₂H₂⁺ (ion structure unspecified)

Electron affinity 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.

Gerardi, Breen, et al., 2010
Gerardi, H.K.; Breen, K.J.; Guasco, T.L.; Weddle, G.H.; Gardenier, G.H.; Laaser, J.E.; Johnson, M.A., Survey of Ar-Tagged Predissociation and Vibrationally Mediated Photodetachment Spectroscopies of the Vinylidene Anion, C2H2-, J. Phys. Chem. A, 2010, 114, 3, 1592-1601, https://doi.org/10.1021/jp9095419 . [all data]

Ervin, Gronert, et al., 1990
Ervin, K.M.; Gronert, S.; Barlow, S.E.; Gilles, M.K.; Harrison, A.G.; Bierbaum, V.M.; DePuy, C.H.; Lin, W.C., Bonds Strengths of Ethylene and Acetylene, J. Am. Chem. Soc., 1990, 112, 15, 5750, https://doi.org/10.1021/ja00171a013 . [all data]

Kiefer, Sidhu, et al., 1989
Kiefer, J.H.; Sidhu, S.S.; Kumaran, S.S.; Irdan, E.A., RRKM Model of C2H4 Dissociation: Heat of Formation of Vinylidene, Chem. Phys. Lett., 1989, 159, 1, 32, https://doi.org/10.1016/S0009-2614(89)87448-2 . [all data]

Guo and Grabowski, 1990
Guo, Y.; Grabowski, J.J., Gas Phase Ion Chemistry of the Vinylidene Radical Anion and the Acidity of the Vinyl Radical, Int. J. Mass Spectrom. Ion Proc., 1990, 97, 3, 253, https://doi.org/10.1016/0168-1176(90)85003-K . [all data]

Ervin, Ho, et al., 1989
Ervin, K.M.; Ho, J.; Linberger, W.C., A Study of the Singlet and Triplet States of Vinylidene by Photoelectron Spectroscopy of H2C=C-, D2C=C-, and HDC=C-. Vinylidene-Acetylene Isomerization, J. Chem. Phys., 1989, 91, 10, 5974, https://doi.org/10.1063/1.457415 . [all data]

Burnett, Stevens, et al., 1983
Burnett, S.M.; Stevens, A.E.; Feigerle, C.S.; Lineberger, W.C., Observation of X1A1 vinylidene by photoelectron spectroscopy of the C₂H₂^- anion, Chem. Phys. Lett., 1983, 100, 124. [all data]

Lindinger, Albritton, et al., 1975
Lindinger, W.; Albritton, A.L.; Fehsenfeld, F.C.; Ferguson, E.E., Reactions of O- with N₂, N₂O, SO₂, NH₃, CH₄, C₂H₄, and C₂H₂- with O₂ from 300K to relative kinetic energies of 2 eV, J. Chem. Phys., 1975, 63, 3238. [all data]

Notes

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• Symbols used in this document:
  

  EA	Electron affinity

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