Cyclohexane, methylene-
- Formula: C7H12
- Molecular weight: 96.1702
- IUPAC Standard InChI: InChI=1S/C7H12/c1-7-5-3-2-4-6-7/h1-6H2
- IUPAC Standard InChIKey: YULMNMJFAZWLLN-UHFFFAOYSA-N
- CAS Registry Number: 1192-37-6
- 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: Methylenecyclohexane; 1-Methylenecyclohexane
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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 |
|---|---|---|---|---|---|
| ΔcH°liquid | -4412.4 | kJ/mol | Ccb | Konovalon, 1926 | Heat of combustion at 15°C; Corresponding ΔfHºliquid = -56.9 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 177.4 | 298.15 | Fuchs and Peacock, 1979 | DH |
Reaction thermochemistry data
Go To: Top, Condensed phase thermochemistry 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: 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
+
=
By formula: C7H12 + H2 = C7H14
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -119.5 ± 0.65 | kJ/mol | Chyd | Rogers, Crooks, et al., 1987 | liquid phase |
| ΔrH° | -116.1 ± 0.54 | kJ/mol | Chyd | Turner and Garner, 1958 | liquid phase; solvent: Acetic acid |
| ΔrH° | -116.1 ± 0.54 | kJ/mol | Eqk | Turner and Garner, 1957 | liquid phase; solvent: Acetic acid |
| ΔrH° | -120.1 ± 0.3 | kJ/mol | Chyd | Turner and Garner, 1957, 2 | liquid phase; solvent: Acetic acid |
+
=
By formula: C7H12 + C2HF3O2 = C9H13F3O3
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -44.81 ± 0.10 | kJ/mol | Cac | Wiberg, Wasserman, et al., 1985 | liquid phase; solvent: Trifluoroacetic acid; Trifluoroacetolysis |
=
By formula: C7H12 = C7H12
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -7.2 ± 0.3 | kJ/mol | Eqk | Yursha, Kabo, et al., 1974 | gas phase; Heat of isomerization at 463 K |
References
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Konovalon, 1926
Konovalon, D.-P.,
Sur Les Chaleurs de Combustion de Quelques hydrocarbures cycliques,
J. Chim. Phys., 1926, 23, 359-362. [all data]
Fuchs and Peacock, 1979
Fuchs, R.; Peacock, L.A.,
Heats of vaporization and gaseous heats of formation of some five- and six-membered ring alkenes,
Can. J. Chem., 1979, 57, 2302-2304. [all data]
Rogers, Crooks, et al., 1987
Rogers, D.W.; Crooks, E.; Dejroongruang, K.,
Enthalpies of hydrogenation of the hexenes,
J. Chem. Thermodyn., 1987, 19, 1209-1215. [all data]
Turner and Garner, 1958
Turner, R.B.; Garner, R.H.,
Heats of hydrogenation. V. Relative stabilities in certain exocyclic-endocyclic olefin pairs,
J. Am. Chem. Soc., 1958, 80, 1424-1430. [all data]
Turner and Garner, 1957
Turner, R.B.; Garner, R.H.,
Heats of hydrogenation. V. Relative stabilities in certain exocyclic-endocyclic olefin pairs,
J. Am. Chem. Soc., 1957, 80, 1424-1430. [all data]
Turner and Garner, 1957, 2
Turner, R.B.; Garner, R.H.,
The stability relationship of 1-methyl-cyclopentene and methylenecyclopentane,
J. Am. Chem. Soc., 1957, 79, 253. [all data]
Wiberg, Wasserman, et al., 1985
Wiberg, K.B.; Wasserman, D.J.; Martin, E.J.; Murcko, M.A.,
Enthalpies of hydration of alkenes. 3. Cycloalkenes,
J. Am. Chem. Soc., 1985, 107, 6019-6022. [all data]
Yursha, Kabo, et al., 1974
Yursha, I.A.; Kabo, G.Ya.; Andreevskii, D.N.,
Equilibriums and thermodynamics of the isomerization of methylcyclohexenes,
Neftekhimiya, 1974, 14, 688-693. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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