Cyclobutane, ethyl-

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Gas phase 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Δfgas-27.7 ± 0.7kJ/molCmFuchs and Hallman, 1983ALS
Δfgas-26.3 ± 1.1kJ/molCcbGood, Moore, et al., 1974ALS

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
40.5050.Thermodynamics Research Center, 1997p=1 bar.; GT
57.46100.
72.52150.
87.32200.
113.1273.15
122.8298.15
123.5300.
162.7400.
197.4500.
226.3600.
250.5700.
271.0800.
288.5900.
303.51000.
316.51100.
327.81200.
337.51300.
346.01400.
353.31500.
367.91750.
378.52000.
386.42250.
392.32500.
396.92750.
400.53000.

Condensed phase 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

Quantity Value Units Method Reference Comment
Δfliquid-58.95 ± 0.75kJ/molCcbGood, Moore, et al., 1974 
Quantity Value Units Method Reference Comment
Δcliquid-4017.1 ± 0.67kJ/molCcbGood, Moore, et al., 1974Corresponding Δfliquid = -58.95 kJ/mol (simple calculation by NIST; no Washburn corrections)

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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Tboil343.8 ± 0.1KAVGN/AAverage of 12 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus130.2 ± 0.4KAVGN/AAverage of 14 values; Individual data points
Quantity Value Units Method Reference Comment
Δvap32. ± 1.kJ/molAVGN/AAverage of 6 values; Individual data points

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Reference Comment
28.67343.9Majer and Svoboda, 1985 

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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 and Joel F. Liebman

View reactions leading to C6H12+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference
9.38 ± 0.05EIHolmes and Lossing, 1991

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.

Fuchs and Hallman, 1983
Fuchs, R.; Hallman, J.H., Heats of vaporization of some monosubstituted cyclopropane, cyclobutane, and cyclopentane derivatives. Some observations on the enthalpies of isodesmic ring opening reactions of cyclobutane derivatives, Can. J. Chem., 1983, 61, 503-505. [all data]

Good, Moore, et al., 1974
Good, W.D.; Moore, R.T.; Osborn, A.G.; Douslin, D.R., The enthalpies of formation of ethylcyclobutane, methylenecyclobutane, and 1,1-dimethylcyclopropane, J. Chem. Thermodyn., 1974, 6, 303-310. [all data]

Thermodynamics Research Center, 1997
Thermodynamics Research Center, Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

Holmes and Lossing, 1991
Holmes, J.L.; Lossing, F.P., Ionization energies of homologous organic compounds and correlation with molecular size, Org. Mass Spectrom., 1991, 26, 537. [all data]


Notes

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