1-Pentene, 2,4,4-trimethyl-
- Formula: C8H16
- Molecular weight: 112.2126
- IUPAC Standard InChIKey: FXNDIJDIPNCZQJ-UHFFFAOYSA-N
- CAS Registry Number: 107-39-1
- 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. - Other names: Diisobutylene; Diisobutene; 2,2,4-Trimethyl-4-pentene; 2,4,4-Trimethyl-1-pentene; (tert-C4H9)CH2C(CH3)=CH2; 2,4,4-Trimethylpent-1-ene; 2,4,4-Trimethylpentene-1; 1-Pentene, 2,2,4-trimethyl-
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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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔcH°liquid | -5289.08 ± 0.67 | kJ/mol | Ccb | Rockenfeller and Rossini, 1961 | Derived from the ratio of Heat of combustion; Corresponding ΔfHºliquid = -145.6 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -5292.72 | kJ/mol | Ccb | Banse and Parks, 1933 | Corresponding ΔfHºliquid = -142.0 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 306.3 | J/mol*K | N/A | Parks, Todd, et al., 1936 | Extrapolation below 90 K, 59.75 J/mol*K.; DH |
S°liquid | 311.7 | J/mol*K | N/A | Parks, Todd, et al., 1936 | Extrapolation below 80 K, 62.51 J/mol*K.; DH |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
235.35 | 296.0 | Parks, Todd, et al., 1936 | T = 81 to 296 K. Value is unsmoothed experimental datum.; DH |
240.20 | 298.6 | Parks, Todd, et al., 1936 | T = 81 TO 296 K. Value is unsmoothed experimental datum.; DH |
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 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
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 375. ± 2. | K | AVG | N/A | Average of 21 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 179.5 ± 0.2 | K | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 178.9 | K | N/A | Parks, Todd, et al., 1936, 2 | Uncertainty assigned by TRC = 0.2 K; TRC |
Ttriple | 172. | K | N/A | Parks and Huffman, 1931 | Uncertainty assigned by TRC = 1. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 35.7 | kJ/mol | EB | Malanowski, 2007 | Based on data from 306. to 356. K.; AC |
ΔvapH° | 35.7 | kJ/mol | N/A | Reid, 1972 | AC |
ΔvapH° | 35.7 | kJ/mol | V | Camin and Rossini, 1960 | ALS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
33.5 | 358. | A | Stephenson and Malanowski, 1987 | Based on data from 343. to 381. K.; AC |
35.1 | 316. | MM | Camin and Rossini, 1960, 2 | Based on data from 301. to 375. K.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
8.79 | 178.9 | Domalski and Hearing, 1996 | AC |
8.765 | 178.9 | Parks, Todd, et al., 1936 | DH |
6.795 | 166. | Parks, Todd, et al., 1936 | DH |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
48.99 | 178.9 | Parks, Todd, et al., 1936 | DH |
40.9 | 166. | Parks, Todd, et al., 1936 | DH |
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
By formula: C8H16 + H2 = C8H18
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -107. | kJ/mol | Chyd | Turner, Nettleton, et al., 1958 | liquid phase; solvent: Acetic acid |
ΔrH° | -112.9 ± 0.3 | kJ/mol | Chyd | Dolliver, Gresham, et al., 1937 | gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -114.0 ± 0.3 kJ/mol; At 355 °K |
ΔrH° | -119.6 ± 3.3 | kJ/mol | Chyd | Crawford and Parks, 1936 | liquid phase |
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.
Rockenfeller and Rossini, 1961
Rockenfeller, J.D.; Rossini, F.D.,
Heats of combustion, isomerization, and formation of selected C7, C8, and C10 monoolefin hydrocarbons,
J. Phys. Chem., 1961, 65, 267-272. [all data]
Banse and Parks, 1933
Banse, H.; Parks, G.S.,
Thermal data on organic compounds. XII. The heats of combustion of nine hydrocarbons,
J. Am. Chem. Soc., 1933, 55, 3223-3227. [all data]
Parks, Todd, et al., 1936
Parks, G.S.; Todd, S.S.; Shomate, C.H.,
Thermal data on organic compounds. XVII. Some heat capacity, entropy and free energy data for five higher olefins,
J. Am. Chem. Soc., 1936, 58, 2505-2508. [all data]
Parks, Todd, et al., 1936, 2
Parks, G.S.; Todd, S.S.; Shomate, C.H.,
Thermal data on organic compounds. XVII. Some heat capacity, entropy and free energy data for five higher olefins,
J. Am. Chem. Soc., 1936, 58, 2505. [all data]
Parks and Huffman, 1931
Parks, G.S.; Huffman, H.M.,
Some fusion and transition data for hydrocarbons,
Ind. Eng. Chem., 1931, 23, 1138-9. [all data]
Malanowski, 2007
Malanowski, Stanislaw K.,
Vapor-Liquid Equilibrium for Benzaldehyde with 1-Methylethylbenzene and for 2-Methyl-propan-2-ol with 2,4,4-Trimethyl-1-pentene,
J. Chem. Eng. Data, 2007, 52, 1, 239-243, https://doi.org/10.1021/je060359o
. [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]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Turner, Nettleton, et al., 1958
Turner, R.B.; Nettleton, J.E.; Perelman,
Heats of Hydrogenation. VI. Heats of hydrogenation of some substituted ethylenes,
J. Am. Chem. Soc., 1958, 80, 1430-1433. [all data]
Dolliver, Gresham, et al., 1937
Dolliver, M.a.; Gresham, T.L.; Kistiakowsky, G.B.; Vaughan, W.E.,
Heats of organic reactions. V. Heats of hydrogenation of various hydrocarbons,
J. Am. Chem. Soc., 1937, 59, 831-841. [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]
Crawford and Parks, 1936
Crawford, B.L., Jr.; Parks, G.S.,
The heat of hydrogenation of diisobutylene,
J. Am. Chem. Soc., 1936, 58, 373. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions Tboil Boiling point Tfus Fusion (melting) point Ttriple Triple point temperature ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrH° Enthalpy of reaction 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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