2,2,3,3,4,4,5,5-Octamethylhexane
- Formula: C14H30
- Molecular weight: 198.3880
- CAS Registry Number: 65149-84-0
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Gas phase 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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -59.35 ± 0.57 | kcal/mol | Ccb | Verevkin, Nolke, et al., 1997 |
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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -72.94 ± 0.55 | kcal/mol | Ccb | Verevkin, Nolke, et al., 1997 | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -2268.5 ± 0.55 | kcal/mol | Ccb | Verevkin, Nolke, et al., 1997 | Corresponding ΔfHºliquid = -72.94 kcal/mol (simple calculation by NIST; no Washburn corrections) |
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:
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 |
|---|---|---|---|---|---|
| Tfus | 327. | K | N/A | Bondar and Zelinskii, 1950 | Uncertainty assigned by TRC = 5. K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 13.6 ± 0.2 | kcal/mol | V | Verevkin, Nolke, et al., 1997 | ALS |
| ΔvapH° | 13.6 ± 0.2 | kcal/mol | GS | Verevkin, Nolke, et al., 1997 | Based on data from 288. to 325. K.; AC |
References
Go To: Top, Gas phase thermochemistry data, 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.
Verevkin, Nolke, et al., 1997
Verevkin, S.P.; Nolke, M.; Beckhaus, H.D.; Ruchardt, C.,
Enthalpies of formation of hexaethylethane, octamethylhexane, and tri-tert-butylmethane. Extremely strained hydrocarbons,
J. Org. Chem., 1997, 62, 4683-4686. [all data]
Bondar and Zelinskii, 1950
Bondar; Zelinskii,
Dokl. Akad. Nauk SSSR, 1950, 72, 881. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Tfus Fusion (melting) point 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 ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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