(Z)-2-Heptene
- Formula: C7H14
- Molecular weight: 98.1861
- IUPAC Standard InChI: InChI=1S/C7H14/c1-3-5-7-6-4-2/h3,5H,4,6-7H2,1-2H3/b5-3-
- IUPAC Standard InChIKey: OTTZHAVKAVGASB-HYXAFXHYSA-N
- CAS Registry Number: 6443-92-1
- 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: (Z)-2-C7H14; cis-2-Heptene; 2-Heptene, (Z)-; (Z)-hept-2-ene
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -105.9 ± 0.63 | kJ/mol | Eqk | Wiberg, Wasserman, et al., 1984 | Trifluoroacetolysis, hrxn[kcal/mol]=-9.827±0.021 |
| ΔfH°liquid | -105.1 ± 0.92 | kJ/mol | Ccb | Good, 1976 | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -4650.22 ± 0.79 | kJ/mol | Ccb | Good, 1976 | Corresponding ΔfHºliquid = -105.1 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
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 372. ± 2. | K | AVG | N/A | Average of 12 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 38.6 | kJ/mol | GS | Verevkin, Wandschneider, et al., 2000 | Based on data from 276. to 304. K.; AC |
| ΔvapH° | 36.0 | kJ/mol | N/A | Reid, 1972 | AC |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 39.0 ± 0.3 | 290. | GS | Verevkin, Wandschneider, et al., 2000 | Based on data from 276. to 304. K.; AC |
| 35.3 | 330. | A | Stephenson and Malanowski, 1987 | Based on data from 315. to 372. K.; AC |
| 34.6 | 347. | N/A | Eisen and Orav, 1970 | Based on data from 332. to 371. K. See also Boublik, Fried, et al., 1984.; AC |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Wiberg, Wasserman, et al., 1984
Wiberg, K.B.; Wasserman, D.J.; Martin, E.,
Enthalpies of hydration of alkenes. 2. The n-heptenes and n-pentenes,
J. Phys. Chem., 1984, 88, 3684-3688. [all data]
Good, 1976
Good, W.D.,
The enthalpies of formation of five isomeric heptenes,
J. Chem. Thermodyn., 1976, 8, 67-71. [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]
Reid, 1972
Reid, Robert C.,
Handbook on vapor pressure and heats of vaporization of hydrocarbons and related compounds, R. C. Wilhort and B. J. Zwolinski, Texas A Research Foundation. College Station, Texas(1971). 329 pages.$10.00,
AIChE J., 1972, 18, 6, 1278-1278, https://doi.org/10.1002/aic.690180637
. [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]
Eisen and Orav, 1970
Eisen, O.; Orav, A.,
Eesti NSV Tead. Akad. Toim. Keem. Geol., 1970, 19, 3, 202. [all data]
Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E.,
The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change 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 ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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