Pentane, 3-methylene-
- Formula: C6H12
- Molecular weight: 84.1595
- IUPAC Standard InChI: InChI=1S/C6H12/c1-4-6(3)5-2/h3-5H2,1-2H3
- IUPAC Standard InChIKey: RYKZRKKEYSRDNF-UHFFFAOYSA-N
- CAS Registry Number: 760-21-4
- 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: 1-Butene, 2-ethyl-; 2-Ethyl-1-butene; 3-Methylenepentane; (C2H5)2C=CH2; 1,1-Diethylethene; 2-ethylbut-1-ene
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Condensed phase thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -20.8 ± 0.2 | kcal/mol | Ccb | Wiberg and Hao, 1991 |
Phase change 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 as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 339. ± 2. | K | AVG | N/A | Average of 13 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 141.13 | K | N/A | Derfer, Greenlee, et al., 1949 | Uncertainty assigned by TRC = 0.2 K; TRC |
| Tfus | 141.17 | K | N/A | Boord, Greenlee, et al., 1946 | Uncertainty assigned by TRC = 0.3 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 7.41 | kcal/mol | V | Camin and Rossini, 1956 | ALS |
| ΔvapH° | 7.41 | kcal/mol | N/A | Camin and Rossini, 1956, 2 | Based on data from 289. to 338. K.; 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 and Hao, 1991
Wiberg, K.B.; Hao, S.,
Enthalpies of hydration of alkenes. 4. Formation of acyclic tert-alcohols,
J. Org. Chem., 1991, 56, 5108-5110. [all data]
Derfer, Greenlee, et al., 1949
Derfer, J.M.; Greenlee, K.W.; Boord, C.E.,
A New Synthesis of Monoalkylcyclobutanes: Reduction of Neopentyl Type Tribromides,
J. Am. Chem. Soc., 1949, 71, 175. [all data]
Boord, Greenlee, et al., 1946
Boord, C.E.; Greenlee, K.W.; Perilstein, W.L.,
The Synthesis, Purification and Prop. of Hydrocarbons of Low Mol. Weight, Am. Pet. Inst. Res. Proj. 45, Eighth Annu. Rep., Ohio State Univ., June 30, 1946. [all data]
Camin and Rossini, 1956
Camin, D.L.; Rossini, F.D.,
Physical properties of the 17 isomeric hexenes of the API research series,
J. Phys. Chem., 1956, 60, 1446. [all data]
Camin and Rossini, 1956, 2
Camin, David L.; Rossini, Frederick D.,
Physical Properties of the 17 Isomeric Hexenes.of the API Research Series,
J. Phys. Chem., 1956, 60, 10, 1446-1451, https://doi.org/10.1021/j150544a029
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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