Cyclohexene, 4-methyl-

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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
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil376. ± 1.KAVGN/AAverage of 9 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus156.88KN/ABoord, Greenlee, et al., 1950Uncertainty assigned by TRC = 0.6 K; TRC
Tfus157.4KN/ABoord, Greenlee, et al., 1950Uncertainty assigned by TRC = 0.3 K; TRC
Quantity Value Units Method Reference Comment
Δvap36.3 ± 0.6kJ/molGSVerevkin, Wandschneider, et al., 2000Based on data from 275. to 296. K.; AC

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
37.0 ± 0.6286.GSVerevkin, Wandschneider, et al., 2000Based on data from 275. to 296. K.; AC
36.3307.AStephenson and Malanowski, 1987Based on data from 292. to 429. K.; AC

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
6.63153.6Lebedev and Smirnova, 1994AC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Gas phase ion energetics data

Go To: Top, 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 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, Phase change 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.

Boord, Greenlee, et al., 1950
Boord, C.E.; Greenlee, K.W.; Derfer, J.M., The Synthesis, Purification and Prop. of Hydrocarbons of Low Mol. Wt., Am. Pet. Inst. Res. Proj. 45, Twelfth Annu. Rep., Ohio State Univ., 1950. [all data]

Verevkin, Wandschneider, et al., 2000
Verevkin, Sergey P.; Wandschneider, Dirk; Heintz, Andreas, Determination of Vaporization Enthalpies of Selected Linear and Branched C 7 , C 8 , C 9 , C 11 , and C 12 Monoolefin Hydrocarbons from Transpiration and Correlation Gas-Chromatography Methods, J. Chem. Eng. Data, 2000, 45, 4, 618-625, https://doi.org/10.1021/je990297k . [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

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]

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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