1,5-Hexadiyne

• Formula: C₆H₆
• Molecular weight: 78.1118
• IUPAC Standard InChI: InChI=1S/C6H6/c1-3-5-6-4-2/h1-2H,5-6H2 Copy

  
• IUPAC Standard InChIKey: YFIBSNDOVCWPBL-UHFFFAOYSA-N Copy
• CAS Registry Number: 628-16-0
• 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: Bipropargyl; Dipropargyl; HCCCH2CH2CCH; hexa-1,5-diyne
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • 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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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

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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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

4 +  =

By formula: 4H₂ + C₆H₆ = C₆H₁₄

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 as indicated in comments:
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
LL - Sharon G. Lias and Joel F. Liebman

View reactions leading to C₆H₆⁺ (ion structure unspecified)

Ionization energy determinations

Appearance energy determinations

References

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

Farchan Laboratories, 1990
Farchan Laboratories, Research Chemicals Catalog, Farchan Laboratories, Gainesville, FL, 1990, 91. [all data]

Skinner and Snelson, 1959
Skinner, H.A.; Snelson, A., Heats of Hydrogenation. Part 3, Trans. Faraday Soc., 1959, 55, 404. [all data]

Pomerantz, Fookson, et al., 1954
Pomerantz, P.; Fookson, A.; Mears, T.W.; Rothberg, S.; Howard, F.L., Synthesis and Physical Properties of Several Acetylenic Hydrocarbons, J. Res. Natl. Bur. Stand. (U. S.), 1954, 52, 51. [all data]

Perkin, 1895
Perkin, W.H., J. Chem. Soc., 1895, 67, 255-64. [all data]

Griner, 1892
Griner, G., Ann. Chim., 1892, 26, 347. [all data]

Skinner and Snelson, 1959, 2
Skinner, H.A.; Snelson, A., Heats of hydrogenation Part 3., Trans. Faraday Soc., 1959, 55, 405-407. [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]

Rosenstock, McCulloh, et al., 1977
Rosenstock, H.M.; McCulloh, K.E.; Lossing, F.P., On the mechanisms of C₆H₆ ionization fragmentation, Int. J. Mass Spectrom. Ion Phys., 1977, 25, 327. [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]

Gross and Aerni, 1973
Gross, M.L.; Aerni, R.J., The unusual loss of hydrogen from ionized 1,5-hexadiyne, J. Am. Chem. Soc., 1973, 95, 7875. [all data]

Momigny, Brakier, et al., 1962
Momigny, J.; Brakier, L.; D'Or, L., Comparaison entre les effets de l'impact electronique sur le benzene et sur les isomeres du benzene en chaine ouverte, Bull. Classe Sci. Acad. Roy. Belg., 1962, 48, 1002. [all data]

Bieri, Asbrink, et al., 1982
Bieri, G.; Asbrink, L.; Von Niessen, W., 30.4-nm He(II) photoelectron spectra of organic molecules, J. Electron Spectrosc. Relat. Phenom., 1982, 27, 129. [all data]

Bischof, Gleiter, et al., 1975
Bischof, P.; Gleiter, R.; Hopf, H.; Lenich, F.T., Photoelectron spectra of open chain C₆H₆ isomers, J. Am. Chem. Soc., 1975, 97, 5467. [all data]

Kompe, Peel, et al., 1993
Kompe, B.; Peel, J.B.; Traeger, J.C., A theoretical and experimental study of the structures and stabilities of the [C₅H₃]⁺ cation, Org. Mass Spectrom., 1993, 28, 1253. [all data]

Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  Tboil	Boiling point
  Tfus	Fusion (melting) point
  ΔrH°	Enthalpy of reaction at standard conditions

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