1,3,5,7-Cyclooctatetraene

• Formula: C₈H₈
• Molecular weight: 104.1491
• IUPAC Standard InChI: InChI=1S/C8H8/c1-2-4-6-8-7-5-3-1/h1-8H/b2-1-,3-1-,4-2-,5-3-,6-4-,7-5-,8-6-,8-7- Copy

  
• IUPAC Standard InChIKey: KDUIUFJBNGTBMD-BONZMOEMSA-N Copy
• CAS Registry Number: 629-20-9
• 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: [8]Annulene; Cyclooctatetraene; UN 2358
• 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
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • IR Spectrum
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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Reaction thermochemistry data

Go To: Top, Gas phase ion energetics data, 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 as indicated in comments:
B - John E. Bartmess
ALS - 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

C₈H₇^- +  =

By formula: C₈H₇^- + H⁺ = C₈H₈

4 +  =

By formula: 4H₂ + C₈H₈ = C₈H₁₆

=

By formula: C₈H₈ = C₈H₈

=

By formula: C₈H₈ = c₈H₈

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, 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 as indicated in comments:
B - John E. Bartmess
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 C₈H₈⁺ (ion structure unspecified)

Electron affinity determinations

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₈H₇^- +  =

By formula: C₈H₇^- + H⁺ = C₈H₈

Gas Chromatography

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, 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

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Van Den Dool and Kratz RI, non-polar column, temperature ramp

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Van Den Dool and Kratz RI, non-polar column, custom temperature program

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Van Den Dool and Kratz RI, polar column, temperature ramp

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Normal alkane RI, non-polar column, temperature ramp

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Normal alkane RI, non-polar column, custom temperature program

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Normal alkane RI, polar column, custom temperature program

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References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Gas Chromatography, Notes

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

Kato, Lee, et al., 1997
Kato, S.; Lee, H.S.; Gareyev, R.; Wenthold, P.G.; Lineberger, W.C.; DePuy, C.H.; Bierbaum, V.M., Experimental and Computational Studies of the Structures and Energetics of Cyclooctatetraene and Its Derivatives, J. Am. Chem. Soc., 1997, 119, 33, 7863, https://doi.org/10.1021/ja971433d . [all data]

Turner, Meador, et al., 1957
Turner, R.B.; Meador, W.R.; Doering, W.E.; Knox, L.H.; Mayer, J.R.; Wiley, D.W., Heats of hydrogenation. III. Hydrogenation of cycllooctatetraene and of some seven-membered non-benzenoid aromatic compounds, J. Am. Chem. Soc., 1957, 79, 4127-4133. [all data]

Prosen, Johnson, et al., 1947
Prosen, E.J.; Johnson, W.H.; Rossini, F.D., Heat of combustion and formation of 1,3,5,7-cyclooctatetraene and its heat of isomerization to styrene, J. Am. Chem. Soc., 1947, 69, 2068-2069. [all data]

Squillacote and Bergman, 1986
Squillacote, M.E.; Bergman, A., Trapping of 1,3,5,7-cyclooctatetraene valence tautomers. Thermodynamic stability of bicyclo[4.2.0]octa-2,4,7-triene, J. Org. Chem., 1986, 51, 3910-3911. [all data]

Miller, Viggiano, et al., 2002
Miller, T.M.; Viggiano, A.A.; Miller, A.E.S., Electron attachment and detachment: Cyclooctatetraene, J. Phys. Chem. A, 2002, 106, 43, 10200-10204, https://doi.org/10.1021/jp0205214 . [all data]

Wenthold, Hrovat, et al., 1996
Wenthold, P.G.; Hrovat, D.A.; Borden, W.T.; Lineberger, W.C., Transition State Spectroscopy of Cyclooctatetraene, Science, 1996, 272, 5267, 1456, https://doi.org/10.1126/science.272.5267.1456 . [all data]

Denault, Chen, et al., 1998
Denault, J.W.; Chen, G.D.; Cooks, R.G., Electron affinity of 1,3,5,7-cyclooctatetraene determined by the kinetic method, J. Am. Soc. Mass Spectrom., 1998, 9, 11, 1141-1145, https://doi.org/10.1016/S1044-0305(98)00092-0 . [all data]

Gygax, Peters, et al., 1979
Gygax, R.; Peters, H.L.; Brauman, J.I., Photodetachment of electrons from anions of high symmetry. Electron photodetachment spectra of the cycloctatetraenyl and perinaphthenyl anions, J. Am. Chem. Soc., 1979, 101, 2567. [all data]

Wentworth and Ristau, 1969
Wentworth, W.E.; Ristau, W., Thermal Electron Attachment Involving a Change in Molecular Geometry, J. Phys. Chem., 1969, 73, 7, 2126, https://doi.org/10.1021/j100727a005 . [all data]

Fu and Dunbar, 1978
Fu, E.W.; Dunbar, R.C., Photodissociation spectroscopy and structural rearrangements in ions of cyclooctatetraene, styrene and related molecules, J. Am. Chem. Soc., 1978, 100, 2283. [all data]

Batich, Bischof, et al., 1973
Batich, C.; Bischof, P.; Heilbronner, E., The photoelectron spectra of cyclooctatetraene and its hydrogenated derivatives, J. Electron Spectrosc. Relat. Phenom., 1973, 1, 333. [all data]

Dewar, Harget, et al., 1969
Dewar, M.J.S.; Harget, A.; Haselbach, E., Cyclooctatetraene and ions derived from it, J. Am. Chem. Soc., 1969, 91, 7521. [all data]

Al-Joboury and Turner, 1964
Al-Joboury, M.I.; Turner, D.W., Molecular photoelectron spectroscopy. Part II. A summary of ionization potentials, J. Chem. Soc., 1964, 4434. [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]

Franklin and Carroll, 1969
Franklin, J.L.; Carroll, S.R., The effect of molecular structure on ionic decomposition. I. An electron impact study of seven C₈H₈ isomers, J. Am. Chem. Soc., 1969, 91, 5940. [all data]

Lifshitz and Malinovich, 1984
Lifshitz, C.; Malinovich, Y., Time resolved photoionization mass spectrometry in the millisecond range, Int. J. Mass Spectrom. Ion Processes, 1984, 60, 99. [all data]

Schomburg, 1966
Schomburg, G., Gaschromatographische Retentionsdaten und struktur chemischer verbindungen. III. Alkylverzweigte und ungesättigte cyclische Kohlenwasserstoffe, J. Chromatogr., 1966, 23, 18-41, https://doi.org/10.1016/S0021-9673(01)98653-4 . [all data]

Buchman, Cao, et al., 1984
Buchman, O.; Cao, G.-Y.; Peng, C.T., Structure assignment by retention index in gas-liquid radiochromatography of substituted cyclohexenes, J. Chromatogr., 1984, 312, 75-90, https://doi.org/10.1016/S0021-9673(01)92765-7 . [all data]

Peng, Ding, et al., 1988
Peng, C.T.; Ding, S.F.; Hua, R.L.; Yang, Z.C., Prediction of Retention Indexes I. Structure-Retention Index Relationship on Apolar Columns, J. Chromatogr., 1988, 436, 137-172, https://doi.org/10.1016/S0021-9673(00)94575-8 . [all data]

Verzera, Campisi, et al., 2005
Verzera, A.; Campisi, S.; Zappalá, M., SUPELCO. Using SPME-GC-MS to characterize volatile components of honey as indicators of botanical origin, 2005, retrieved from http://www.sigmaaldrich.com/Brands/Supelco_Home/TheReporter.html. [all data]

Verzera, Campisi, et al., 2001
Verzera, A.; Campisi, S.; Zappalá, M.; Bonaccorsi, I., SPME-GC-MS analysis of honey volatile components for the characterization of different floral origin, Am. Lab. Fairfield Conn., 2001, 33, 15, 18-21. [all data]

Shimoda, Peralta, et al., 1996
Shimoda, M.; Peralta, R.R.; Osajima, Y., Headspace gas analysis of fish sauce, J. Agric. Food Chem., 1996, 44, 11, 3601-3605, https://doi.org/10.1021/jf960345u . [all data]

Wang and Guo-Y. -L., 2004
Wang, H.-Y.; Guo-Y. -L., Rapid analysis of the volatile compounds in the rhizomes of Rhodiola sachalinensis and Rhodiola sacra by static headspace-gas chromatography-tandem mass spectrometry, Anal. Letters, 2004, 37, 10, 2151-2161, https://doi.org/10.1081/AL-200026690 . [all data]

Chen, 2008
Chen, H.-F., Quantitative prediction of gas chromatography retention indices with support vector machines, radial basis neutral networks and multiple linear regression, Anal. Chim. Acta, 2008, 609, 1, 24-36, https://doi.org/10.1016/j.aca.2008.01.003 . [all data]

Waggott and Davies, 1984
Waggott, A.; Davies, I.W., Identification of organic pollutants using linear temperature programmed retention indices (LTPRIs) - Part II, 1984, retrieved from http://dwi.defra.gov.uk/research/completed-research/reports/dwi0383.pdf. [all data]

Robinson and Odell, 1971
Robinson, P.G.; Odell, A.L., A system of standard retention indices and its uses. The characterisation of stationary phases and the prediction of retention indices, J. Chromatogr., 1971, 57, 1-10, https://doi.org/10.1016/0021-9673(71)80001-8 . [all data]

Editorial paper, 2005
Editorial paper, Solid Phase Microextraction (SPME) Application Guide, The Reporter Europe (Supelco), 2005, 16, 5, 12-12. [all data]

Peng, Yang, et al., 1991
Peng, C.T.; Yang, Z.C.; Ding, S.F., Prediction of rentention idexes. II. Structure-retention index relationship on polar columns, J. Chromatogr., 1991, 586, 1, 85-112, https://doi.org/10.1016/0021-9673(91)80028-F . [all data]

Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Gas Chromatography, References

• Symbols used in this document:
  

  AE	Appearance energy
  EA	Electron affinity
  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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