Allene

• Formula: C₃H₄
• Molecular weight: 40.0639
• IUPAC Standard InChI: InChI=1S/C3H4/c1-3-2/h1-2H2 Copy

  
• IUPAC Standard InChIKey: IYABWNGZIDDRAK-UHFFFAOYSA-N Copy
• CAS Registry Number: 463-49-0
• 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: Propadiene; 1,2-Propadiene; sym-Allylene; Dimethylenemethane; CH2=C=CH2; Propa-1,2-diene
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • Vibrational and/or electronic energy levels
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Ion clustering data
  • IR Spectrum
• Data at other public NIST sites:
  • Microwave spectra (on physics lab web site)
  • Electron-Impact Ionization Cross Sections (on physics web site)
  • Computational Chemistry Comparison and Benchmark Database
  • Gas Phase Kinetics Database
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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 as indicated in comments:
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar

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

C₃H₃^- +  =

By formula: C₃H₃^- + H⁺ = C₃H₄

2 +  =

By formula: 2H₂ + C₃H₄ = C₃H₈

(CAS Reg. No. 86046-90-4 • 4294967295) +  = CAS Reg. No. 86046-90-4

By formula: (CAS Reg. No. 86046-90-4 • 4294967295C₃H₄) + C₃H₄ = CAS Reg. No. 86046-90-4

(CAS Reg. No. 83268-51-3 • 4294967295) +  = CAS Reg. No. 83268-51-3

By formula: (CAS Reg. No. 83268-51-3 • 4294967295C₃H₄) + C₃H₄ = CAS Reg. No. 83268-51-3

(CAS Reg. No. 1724-46-5 • 4294967295) +  = CAS Reg. No. 1724-46-5

By formula: (CAS Reg. No. 1724-46-5 • 4294967295C₃H₄) + C₃H₄ = CAS Reg. No. 1724-46-5

=

By formula: C₃H₄ = C₃H₄

(CAS Reg. No. 86046-88-0 • 4294967295) +  = CAS Reg. No. 86046-88-0

By formula: (CAS Reg. No. 86046-88-0 • 4294967295C₃H₄) + C₃H₄ = CAS Reg. No. 86046-88-0

Rh⁺ +  = (Rh⁺ • )

By formula: Rh⁺ + C₃H₄ = (Rh⁺ • C₃H₄)

Enthalpy of reaction

 +  = ( • )

By formula: Cr⁺ + C₃H₄ = (Cr⁺ • C₃H₄)

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:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C₃H₄⁺ (ion structure unspecified)

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₃H₃^- +  =

By formula: C₃H₃^- + H⁺ = C₃H₄

Mass spectrum (electron ionization)

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, Gas Chromatography, References, Notes

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

Vibrational and/or electronic energy levels

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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: Takehiko Shimanouchi

Symmetry:   D_2d     Symmetry Number σ = 4

Source: Shimanouchi, 1972

Notes

Gas Chromatography

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, References, Notes

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

Kovats' RI, non-polar column, isothermal

View large format table.

Kovats' RI, non-polar column, custom temperature program

View large format table.

Normal alkane RI, non-polar column, temperature ramp

View large format table.

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, Gas Chromatography, Notes

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

Robinson, Polak, et al., 1995
Robinson, M.S.; Polak, M.L.; Bierbaum, V.M.; DePuy, C.H.; Lineberger, W.C., Experimental Studies of Allene, Methylacetylene, and the Propargyl Radical: Bond Dissociation Energies, Gas-Phase Acidities, and Ion-Molecule Chemistry, J. Am. Chem. Soc., 1995, 117, 25, 6766, https://doi.org/10.1021/ja00130a017 . [all data]

Oakes and Ellison, 1983
Oakes, J.M.; Ellison, B.G., Photoelectron spectroscopy of the allenyl anion CH₂=C=CH^-, J. Am. Chem. Soc., 1983, 105, 2969. [all data]

Kistiakowsky, Ruhoff, et al., 1936
Kistiakowsky, G.B.; Ruhoff, J.R.; Smith, H.A.; Vaughan, W.E., Heats of organic reactions. IV. Hydrogenation of some dienes and of benzene, J. Am. Chem. Soc., 1936, 58, 146-153. [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]

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]

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]

Cordes and Gunzler, 1959
Cordes, J.F.; Gunzler, H., Das propin/propadien-gleichgewicht, Chem. Ber., 1959, 92, 1055-1062. [all data]

Chen and Armetrout, 1995
Chen, Y.M.; Armetrout, P.B., Activation of C2H6, C3H8, and c-C3H6 by Gas-Phase Rh+ and the Thermochemistry of Rh-Ligand Complexes, J. Am. Chem. Soc., 1995, 117, 36, 9291, https://doi.org/10.1021/ja00141a022 . [all data]

Fisher and Armentrout, 1992
Fisher, E.R.; Armentrout, P.B., Activation of Alkanes by Cr+: Unique Reactivity of Ground-State Cr+(6S) and Thermochemistry of Neutral and Ionic Chromium-Carbon Bonds, J. Am. Chem. Soc., 1992, 114, 6, 2039, https://doi.org/10.1021/ja00032a017 . [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]

Yang, Wang, et al., 1990
Yang, Z.Z.; Wang, L.S.; Lee, Y.T.; Shirley, D.A.; Huang, S.Y.; Lester, W.A., Jr., Molecular beam photoelectron spectroscopy of allene, Chem. Phys. Lett., 1990, 171, 9. [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]

Stockbauer, McCulloh, et al., 1979
Stockbauer, R.; McCulloh, K.E.; Parr, A.C., The ionization potential of allene, Int. J. Mass Spectrom. Ion Phys., 1979, 31, 187. [all data]

Parr, Jason, et al., 1978
Parr, A.C.; Jason, A.J.; Stockbauer, R., Photoionization and threshold photoelectron-photoion coincidence study of allene from onset to 20eV, Int. J. Mass Spectrom. Ion Phys., 1978, 26, 23. [all data]

Bieri, Burger, et al., 1977
Bieri, G.; Burger, F.; Heilbronner, E.; Maier, J.P., Valence ionization enrgies of hydrocarbons, Helv. Chim. Acta, 1977, 60, 2213. [all data]

Lossing, 1972
Lossing, F.P., Free radicals by mass spectrometry. XLV. Ionization potentials and heats of formation of C₃H₃, C₃H₅, and C₄H₇ radicals and ions, Can. J. Chem., 1972, 50, 3973. [all data]

Iverson and Russell, 1972
Iverson, A.A.; Russell, B.R., A medium resolution study of allene in the vacuum ultraviolet. I. Spectra and a preliminary ionization potential, Spectrochim. Acta Part A, 1972, 28, 447. [all data]

Matthews and Warneck, 1969
Matthews, C.S.; Warneck, P., Heats of formation of CHO⁺ and C₃H₃⁺ by photoionization, J. Chem. Phys. 5, 1969, 1, 854. [all data]

Dewar and Worley, 1969
Dewar, M.J.S.; Worley, S.D., Photoelectron spectra of molecules. I. Ionization potentials of some organic molecules and their interpretation, J. Chem. Phys., 1969, 50, 654. [all data]

Baker and Turner, 1969
Baker, C.; Turner, D.W., Photoelectron spectra of allene and keten; Jahn-Teller distortion in the ionisation of allene, Chem. Commun., 1969, 480. [all data]

Parr and Elder, 1968
Parr, A.C.; Elder, F.A., Photoionization of 1,3butadiene, 1,2-butadiene, allene, and propyne, J. Chem. Phys., 1968, 49, 2659. [all data]

Leng and Nyberg, 1977
Leng, F.J.; Nyberg, G.L., Angular-distribution He(I)/Ne(I) photoelectron spectra of allene, J. Chem. Soc. Faraday Trans. 2, 1977, 73, 1719. [all data]

Thomas and Thompson, 1974
Thomas, R.K.; Thompson, H., The photoelectron spectra of allene, deuteroallenes and tetrafluoroallene, Proc. R. Soc. London A:, 1974, 339, 29. [all data]

Brogli, Crandall, et al., 1973
Brogli, F.; Crandall, J.K.; Heilbronner, E.; Kloster-Jensen, E.; Sojka, S.A., The photoelectron spectra of methyl-substituted allenes and of tetramethyl-bisallenyl, J. Electron Spectrosc. Relat. Phenom., 1973, 2, 455. [all data]

Franklin and Mogenis, 1967
Franklin, J.L.; Mogenis, A., An electron impact study of ions from several dienes, J. Phys. Chem., 1967, 71, 2820. [all data]

Stockbauer and Rosenstock, 1978
Stockbauer, R.; Rosenstock, H.M., Kinetic shift in methane allene ion fragmentation, Int. J. Mass Spectrom. Ion Phys., 1978, 27, 185. [all data]

Shimanouchi, 1972
Shimanouchi, T., Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]

Do and Raulin, 1992
Do, L.; Raulin, F., Gas chromatography of Titan's atmosphere. III. Analysis of low-molecular-weight hydrocarbons and nitriles with a CP-Sil-5 CB WCOT capillary column, J. Chromatogr., 1992, 591, 1-2, 297-301, https://doi.org/10.1016/0021-9673(92)80247-R . [all data]

Do and Raulin, 1989
Do, L.; Raulin, F., Gas chromatography of Titan's atmosphere. I. Analysis of low-molecular-weight hydrocarbons and nitriles with a PoraPLOT Q porous polymer coated open-tubular capillary column, J. Chromatogr., 1989, 481, 45-54, https://doi.org/10.1016/S0021-9673(01)96751-2 . [all data]

Hively and Hinton, 1968
Hively, R.A.; Hinton, R.E., Variation of the retention index with temperature on squalane substrates, J. Gas Chromatogr., 1968, 6, 4, 203-217, https://doi.org/10.1093/chromsci/6.4.203 . [all data]

Zulaïca and Guiochon, 1966
Zulaïca, J.; Guiochon, G., Analyse des hauts polymères par chromatographie en phase gazeuse de leurs produits de pyrolyse. II. Application à quelques hydrocarbures macromoléculaires purs, Bull. Soc. Chim. Fr., 1966, 4, 1351-1363. [all data]

Hoekman, 1993
Hoekman, S.K., Improved gas chromatography procedure for speciated hydrocarbon measurements of vehicle emissions, J. Chromatogr., 1993, 639, 2, 239-253, https://doi.org/10.1016/0021-9673(93)80260-F . [all data]

Bramston-Cook, 2013
Bramston-Cook, R., Kovats indices for C2-C13 hydrocarbons and selected oxygenated/halocarbons with 100 % dimethylpolysiloxane columns, 2013, retrieved from http://lotusinstruments.com/monographs/List .... [all data]

Supelco, 2012
Supelco, CatalogNo. 24160-U, Petrocol DH Columns. Catalog No. 24160-U, 2012, retrieved from http://www.sigmaaldrich.com/etc/medialib/docs/Supelco/Datasheet/1/w97949.Par.0001.File.tmp/w97949.pdf. [all data]

Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, Gas Chromatography, References

• Symbols used in this document:
  

  AE	Appearance energy
  IE (evaluated)	Recommended ionization energy
  T	Temperature
  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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