Cyclohexane, 1-ethyl-2-methyl-, cis-
- Formula: C9H18
- Molecular weight: 126.2392
- IUPAC Standard InChI: InChI=1S/C9H18/c1-3-9-7-5-4-6-8(9)2/h8-9H,3-7H2,1-2H3/t8-,9+/m1/s1
- IUPAC Standard InChIKey: XARGIVYWQPXRTC-BDAKNGLRSA-N
- CAS Registry Number: 4923-77-7
- 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. - Stereoisomers:
- Other names: 1-Methyl-cis-2-ethylcyclohexane; cis-1-Ethyl-2-methyl-cyclohexane; c-1-Ethyl-2-methylcyclohexane; cis-2-Methyl-1-ethylcyclohexane
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Reaction 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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -56.46 ± 0.26 | kcal/mol | Ccb | Good, 1970 | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -1404.84 ± 0.22 | kcal/mol | Ccb | Good, 1970 | Corresponding ΔfHºliquid = -56.46 kcal/mol (simple calculation by NIST; no Washburn corrections) |
Phase change data
Go To: Top, Condensed phase thermochemistry data, Reaction 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: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 429.13 | K | N/A | Anonymous, 1958 | Uncertainty assigned by TRC = 0.25 K |
| Tboil | 429.12 | K | N/A | Birch, Dean, et al., 1954 | Uncertainty assigned by TRC = 0.5 K; measured pressure and calculated from an equation |
| Tboil | 428.15 | K | N/A | Pines and Ipatieff, 1948 | Uncertainty assigned by TRC = 2. K |
| Tboil | 426.15 | K | N/A | Chiurdoglu, 1944 | Uncertainty assigned by TRC = 2. K |
Reaction thermochemistry data
Go To: Top, 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: 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
3 +
=
By formula: 3H2 + C9H12 = C9H18
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -43.3 | kcal/mol | Eqk | Miki, 1975 | gas phase; GC |
=
By formula: C9H18 = C9H18
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1.8 ± 0.1 | kcal/mol | Eqk | Mann, 1968 | gas phase; At 593K |
References
Go To: Top, Condensed phase thermochemistry data, Phase change 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.
Good, 1970
Good, W.D.,
The enthalpies of combustion and formation of n-propylcyclohexane and six methylethylcyclohexanes,
J. Chem. Thermodyn., 1970, 2, 399-405. [all data]
Anonymous, 1958
Anonymous, R.,
, Am. Pet. Inst. Res. Proj. 45, Ohio State Univ., 1958. [all data]
Birch, Dean, et al., 1954
Birch, S.F.; Dean, R.A.; Whitehead, E.V.,
J. Org. Chem., 1954, 19, 1449. [all data]
Pines and Ipatieff, 1948
Pines, H.; Ipatieff, V.N.,
J. Am. Chem. Soc., 1948, 70, 531. [all data]
Chiurdoglu, 1944
Chiurdoglu, G.,
Bull. Soc. Chim. Belg., 1944, 53, 55. [all data]
Miki, 1975
Miki, Y.,
The thermodynamic properties of C9H18 naphthenes. I. The determination of the equilibrium constants of the hydrogenation of propyl- and isopropylbenzene and ethyltoluenes,
Bull. Chem. Soc. Jpn., 1975, 48, 201-208. [all data]
Mann, 1968
Mann, G.,
Conformation and physical data of alkanes and cyclanes. IV. Conformation energy of gauche-anticonformers,
Tetrahedron, 1968, 24, 6495-65. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References
- Symbols used in this document:
Tboil Boiling point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation 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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