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[18]-Annulene


Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Deltafgas67.0 ± 6.0kcal/molCcbBeezer, Mortimer, et al., 1965 

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Deltafsolid39.0 ± 4.0kcal/molCcbBeezer, Mortimer, et al., 1965 
Quantity Value Units Method Reference Comment
Deltacsolid-2346.8 ± 4.0kcal/molCcbBeezer, Mortimer, et al., 1965Corresponding «DELTA»fsolid = 39.0 kcal/mol (simple calculation by NIST; no Washburn corrections)

Phase change data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Mass spectrum (electron ionization), 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Deltasub28. ± 2.kcal/molEBeezer, Mortimer, et al., 1965ALS
Deltasub27.96kcal/molN/ABeezer, Mortimer, et al., 1965DRB

Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change 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

Spectrum

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Mass spectrum
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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Chemical Concepts
NIST MS number 185488

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), Notes

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

Beezer, Mortimer, et al., 1965
Beezer, A.E.; Mortimer, C.T.; Springall, H.D.; Sondheimer, F.; Wolovsky, R., 33. The heat of combustion of cyclo-octadecanonaene ([18]annulene), J. Chem. Soc., 1965, 216-220. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References