Cyclooctyne

• Formula: C₈H₁₂
• Molecular weight: 108.1809
• IUPAC Standard InChI: InChI=1S/C8H12/c1-2-4-6-8-7-5-3-1/h1-6H2 Copy

  
• IUPAC Standard InChIKey: ZPWOOKQUDFIEIX-UHFFFAOYSA-N Copy
• CAS Registry Number: 1781-78-8
• Chemical structure:
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• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Mass spectrum (electron ionization)
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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 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

2 +  =

By formula: 2H₂ + C₈H₁₂ = C₈H₁₆

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

View reactions leading to C₈H₁₂⁺ (ion structure unspecified)

Ionization 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.

Roth, Hopf, et al., 1994
Roth, W.R.; Hopf, H.; Horn, C., Propargyl-Stabilisierungsenergie, Chem. Ber., 1994, 127, 1781-1795. [all data]

Turner, Jarrett, et al., 1973
Turner, R.B.; Jarrett, A.D.; Goebel, P.; Mallon, B.J., Heats of hydrogenation. 9. Cyclic acetylenes and some miscellaneous olefins, J. Am. Chem. Soc., 1973, 95, 790-792. [all data]

Bieri, Heilbronner, et al., 1974
Bieri, G.; Heilbronner, E.; Kloster-Jensen, E.; Schmelzer, A.; Wirz, J., Electronic states of 1,5-cyclooctadiyne radical cation and of related systems: the electronic structure of cis-bent carbon-carbon triple bonds, Helv. Chim. Acta, 1974, 57, 1265. [all data]

Schmidt, Schweig, et al., 1974
Schmidt, H.; Schweig, A.; Krebs, A., Splitting of the degenerate acetylenic πMOs; a probe for ring strain, Tetrahedron Lett., 1974, 16, 1471. [all data]

Notes

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• Symbols used in this document:
  

  ΔrH°	Enthalpy of reaction at standard conditions

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