2,4-Hexadiene, 2,5-dimethyl-
- Formula: C8H14
- Molecular weight: 110.1968
- IUPAC Standard InChI: InChI=1S/C8H14/c1-7(2)5-6-8(3)4/h5-6H,1-4H3
- IUPAC Standard InChIKey: DZPCYXCBXGQBRN-UHFFFAOYSA-N
- CAS Registry Number: 764-13-6
- 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: Biisobutenyl; Biisocrotyl; Diisocrotyl; 2,5-Dimethyl-2,4-hexadiene; (CH3)2C=CHCH=C(CH3)2; 2,5-Dimethylhexa-2,4-diene; NSC 10812
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Condensed phase thermochemistry data
Go To: Top, 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
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -15.09 ± 0.20 | kcal/mol | Ccr | Steele, Chirico, et al., 1990 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -1215.53 ± 0.17 | kcal/mol | Ccr | Steele, Chirico, et al., 1990 | Corresponding ΔfHºliquid = -15.09 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of liquid
| Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 109.7 | 298.15 | Steele, Chirico, et al., 1990 | Authors give Cp/R = 55.2. This value appears too large by a factor of two. Actual Cp should be around 229.5 J/mol*K.; DH |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Steele, Chirico, et al., 1990
Steele, W.V.; Chirico, R.D.; Nguyen, A.; Hossenlopp, I.A.; Smith, N.K.,
Determination of ideal-gas enthalpies of formation for key compounds,
Am. Inst. Chem. Eng. Symp. Ser. (AIChE Symp. Ser.), 1990, 138-154. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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