2-Pentene, (E)-
- Formula: C5H10
- Molecular weight: 70.1329
- IUPAC Standard InChI: InChI=1S/C5H10/c1-3-5-4-2/h3,5H,4H2,1-2H3/b5-3+
- IUPAC Standard InChIKey: QMMOXUPEWRXHJS-HWKANZROSA-N
- CAS Registry Number: 646-04-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Stereoisomers:
- Other names: trans-2-Pentene; (E)-2-Pentene; trans-β-Amylene; 2-trans-Pentene; 2-(E)-C5H10; 2-Pentene, trans-; Pentene-2, trans-; trans-pent-2-ene
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Gas 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:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -32. ± 2. | kJ/mol | AVG | N/A | Average of 7 values; Individual data points |
Constant pressure heat capacity of gas
| Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 108.9 | 298.15 | Thermodynamics Research Center, 1997 | p=1 bar. Recommended values were calculated from data for lower alkenes by a method of increments. These values are in good agreement with experimental data (see also [ Kilpatrick J.E., 1946]).; GT |
| 109.4 | 300. | ||
| 136.6 | 400. | ||
| 162.0 | 500. | ||
| 184.2 | 600. | ||
| 203.4 | 700. | ||
| 220.0 | 800. | ||
| 234.3 | 900. | ||
| 246.8 | 1000. | ||
| 257.6 | 1100. | ||
| 267.0 | 1200. | ||
| 275.2 | 1300. | ||
| 282.2 | 1400. | ||
| 288.40 | 1500. |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Ion clustering 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -58.24 ± 0.42 | kJ/mol | Eqk | Wiberg, Wasserman, et al., 1984 | Trifluoroacetolysis; ALS |
| ΔfH°liquid | -57.98 ± 0.76 | kJ/mol | Ccb | Good and Smith, 1979 | ALS |
| ΔfH°liquid | -59.7 ± 1.0 | kJ/mol | Chyd | N/A | DRB |
| ΔfH°liquid | -60.8 ± 0.4 | kJ/mol | Cm | Coops, Mulder, et al., 1946 | DRB |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -3338.71 ± 0.70 | kJ/mol | Ccb | Good and Smith, 1979 | Corresponding ΔfHºliquid = -57.99 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°liquid | -3335.9 ± 0.42 | kJ/mol | Cm | Coops, Mulder, et al., 1946 | Reanalyzed by Cox and Pilcher, 1970, Original value = -3334.6 ± 0.08 kJ/mol; Corresponding ΔfHºliquid = -60.79 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid | 256.6 | J/mol*K | N/A | Chao, Hall, et al., 1983 | DH |
| S°liquid | 256.52 | J/mol*K | N/A | Todd, Oliver, et al., 1947 | DH |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 157.0 | 298.15 | Chao, Hall, et al., 1983 | T = 12 to 302 K.; DH |
| 156.98 | 298.15 | Todd, Oliver, et al., 1947 | T = 12 to 300 K.; DH |
Ion clustering 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: Robert C. Dunbar
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
+
= (
•
)
By formula: Ag+ + C5H10 = (Ag+ • C5H10)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 158. ± 19. | kJ/mol | RAK | Ho, Yang, et al., 1997 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Ion clustering data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Thermodynamics Research Center, 1997
Thermodynamics Research Center,
Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]
Kilpatrick J.E., 1946
Kilpatrick J.E.,
Heats, equilibrium constants, and free energies of formation of the monoolefin hydrocarbons,
J. Res. Nat. Bur. Stand, 1946, 36, 559-612. [all data]
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 and Smith, 1979
Good, W.D.; Smith, N.K.,
The enthalpies of combustion of the isomeric pentenes in the liquid state. A warning to combustion calorimetrists about sample drying,
J. Chem. Thermodyn., 1979, 11, 111-118. [all data]
Coops, Mulder, et al., 1946
Coops, J.; Mulder, D.; Dienske, J.W.; Smittenberg, J.,
The heats of combustion of a number of hydrocarbons,
Rec. Trav. Chim. Pays/Bas, 1946, 65, 128. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Chao, Hall, et al., 1983
Chao, J.; Hall, K.R.; Yao, J.M.,
Thermodynamic properties of simple alkenes,
Thermochim. Acta, 1983, 64(3), 285-303. [all data]
Todd, Oliver, et al., 1947
Todd, S.S.; Oliver, G.D.; Huffman, H.M.,
The heat capacities, heats of fusion and entropies of the six pentenes,
J. Am. Chem. Soc., 1947, 69, 1519-1525. [all data]
Ho, Yang, et al., 1997
Ho, Y.-P.; Yang, Y.-C.; Klippenstein, S.J.; Dunbar, R.C.,
Binding Energies of Ag+ and Cd+ Complexes from Analysis of Radiative Association Kinetics,
J. Phys. Chem. A, 1997, 101, 18, 3338, https://doi.org/10.1021/jp9637284
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Ion clustering data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas 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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