Cyclohexene, 4-methyl-

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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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δfliquid-18. ± 1.kcal/molCcbLebedev and Smirnova, 1994see Lebedev, Kulagina, et al., 1988; ALS
Quantity Value Units Method Reference Comment
Δcliquid-1050. ± 1.kcal/molCcbLebedev and Smirnova, 1994see Lebedev, Kulagina, et al., 1988; Corresponding Δfliquid = -18. kcal/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid60.471cal/mol*KN/ALebedev, Kulagina, et al., 1988DH

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
43.121298.15Lebedev, Kulagina, et al., 1988T = 13.4 to 350 K.; DH

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:
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 C7H12+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
8.91 ± 0.01PERang, Paldoia, et al., 1974LLK
8.92EIWinters and Collins, 1968RDSH
8.91 ± 0.01PIWatanabe, Nakayama, et al., 1962RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C3H3+14.02 ± 0.15?EIWinters and Collins, 1968RDSH
C3H5+13.38 ± 0.11?EIWinters and Collins, 1968RDSH
C4H5+13.43 ± 0.13?EIWinters and Collins, 1968RDSH
C4H6+10.82 ± 0.12?EIWinters and Collins, 1968RDSH
C4H7+11.24 ± 0.04?EIWinters and Collins, 1968RDSH
C5H7+10.43 ± 0.10C2H5EIWinters and Collins, 1968RDSH
C5H8+10.39 ± 0.05C2H4EIWinters and Collins, 1968RDSH
C6H9+10.16CH3EILossing and Holmes, 1984LBLHLM
C6H9+10.12 ± 0.10CH3EIWinters and Collins, 1968RDSH

References

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

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

Lebedev and Smirnova, 1994
Lebedev, B.; Smirnova, N., Themodynamics of cycloalkenes, of their bulk polymerization in the presence of matathesis catalysts and of polyalkenes, Macromol. Chem. Phys., 1994, 195, 35-63. [all data]

Lebedev, Kulagina, et al., 1988
Lebedev, B.V.; Kulagina, T.G.; Smirnova, N.N., Thermodynamics of 4-methylcyclo-hexene, glycollide, and 1,1,3,3,5,5-hexaethylcyclotrisiloxane from 13.4 to 400 K, J. Chem. Thermodyn., 1988, 20, 1383-1396. [all data]

Rang, Paldoia, et al., 1974
Rang, S.; Paldoia, P.; Talvari, A., Ionization potentials of unsaturated hydrocarbons. 2. Mono-substituted cyclopentenes and cyclohexenes, Eesti. NSV Tead. Akad. Toim., 1974, 354. [all data]

Winters and Collins, 1968
Winters, R.E.; Collins, J.H., Mass spectrometric studies of structural isomers. I. Mono- and bicyclic C7H12 molecules, J. Am. Chem. Soc., 1968, 90, 1235. [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]

Lossing and Holmes, 1984
Lossing, F.P.; Holmes, J.L., Stabilization energy and ion size in carbocations in the gas phase, J. Am. Chem. Soc., 1984, 106, 6917. [all data]


Notes

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