2-Pentene, 4,4-dimethyl-, (E)-
- Formula: C7H14
- Molecular weight: 98.1861
- IUPAC Standard InChI: InChI=1S/C7H14/c1-5-6-7(2,3)4/h5-6H,1-4H3/b6-5+
- IUPAC Standard InChIKey: BIDIHFPLDRSAMB-AATRIKPKSA-N
- CAS Registry Number: 690-08-4
- 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. - Stereoisomers:
- Other names: (E)-4,4-Dimethyl-2-pentene; trans-4,4-Dimethyl-2-Pentene; 4,4-Dimethyl-trans-2-pentene; (E)-(CH3)3CCH=CHCH3; 4,4-Dimethyl-2-pentene, trans; 4,4-Dimethyl-(E)-2-pentene; trans-1,1,1-Trimethyl-2-butene; (E)-4,4-dimethylpent-2-ene
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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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 349.7 ± 0.6 | K | AVG | N/A | Average of 8 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 157.84 | K | N/A | Boord, Greenlee, et al., 1950 | Uncertainty assigned by TRC = 0.2 K; TRC |
| Tfus | 157.88 | K | N/A | Streiff, Soule, et al., 1950 | Uncertainty assigned by TRC = 0.06 K; TRC |
| Tfus | 157.91 | K | N/A | Streiff, Soule, et al., 1950 | Uncertainty assigned by TRC = 0.02 K; TRC |
| Tfus | 157.82 | K | N/A | Boord, Greenlee, et al., 1949 | Uncertainty assigned by TRC = 0.4 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 7.84 | kcal/mol | N/A | Reid, 1972 | AC |
| ΔvapH° | 7.85 | kcal/mol | V | Camin and Rossini, 1960 | ALS |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 7.84 | 310. | A | Stephenson and Malanowski, 1987 | Based on data from 295. - 352. K.; AC |
| 7.89 | 304. | MM | Camin and Rossini, 1960, 2 | Based on data from 289. - 350. K.; AC |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Boord, Greenlee, et al., 1950
Boord, C.E.; Greenlee, K.W.; Derfer, J.M.,
The Synthesis, Purification and Prop. of Hydrocarbons of Low Mol. Wt., Am. Pet. Inst. Res. Proj. 45, Twelfth Annu. Rep., Ohio State Univ., 1950. [all data]
Streiff, Soule, et al., 1950
Streiff, A.J.; Soule, L.F.; Kennedy, C.M.; Janes, M.E.; Sedlak, V.A.; Willingham, C.B.; Rossini, F.D.,
Purification, purity, and freezing points of twenty-nine hydrocarbons of the API-standard and API-NBS series.,
J. Res. Natl. Bur. Stand. (U. S.), 1950, 45, 173. [all data]
Boord, Greenlee, et al., 1949
Boord, C.E.; Greenlee, K.W.; Perilstein, W.L.; Derfer, J.M.,
The Synthesis, Purification and Prop. of Hydrocarbons of Low Mol. Wt., Am. Pet. Inst. Res. Proj. 45, Eleventh Annu. Rep., Ohio State Univ., 1949. [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]
Camin and Rossini, 1960
Camin, D.L.; Rossini, F.D.,
Physical properties of to selected C7 and C8 alkene hydrocarbons,
J. Chem. Eng. Data, 1960, 5, 368. [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]
Camin and Rossini, 1960, 2
Camin, D.L.; Rossini, F.D.,
Physical Properties of 16 Selected C 7 and C 8 Alkene Hydrocarbons.,
J. Chem. Eng. Data, 1960, 5, 3, 368-372, https://doi.org/10.1021/je60007a037
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point 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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