Hexacyclopropylethane
- Formula: C20H30
- Molecular weight: 270.4522
- IUPAC Standard InChI: InChI=1S/C20H30/c1-2-13(1)19(14-3-4-14,15-5-6-15)20(16-7-8-16,17-9-10-17)18-11-12-18/h13-18H,1-12H2
- IUPAC Standard InChIKey: SKEXUOOOMGGNIA-UHFFFAOYSA-N
- CAS Registry Number: 26902-55-6
- Chemical structure:
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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 | 111.5 | kcal/mol | Ccb | Bernloehr, Beckhaus, et al., 1984 | Uc=-11044.0±3.5 cal/g |
Condensed phase thermochemistry data
Go To: Top, Gas 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 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°solid | 85.45 ± 0.94 | kcal/mol | Ccb | Bernloehr, Beckhaus, et al., 1984 | Uc=-11044.0±3.5 cal/g; ALS |
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 94.67 | 298.15 | Bernloehr, Beckhaus, et al., 1984 | DH |
Phase change data
Go To: Top, Gas phase thermochemistry data, 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:
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔvapH° | 20.5 ± 0.05 | kcal/mol | GS | Chickos, Hesse, et al., 1995 | Based on data from 333. to 373. K.; AC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔsubH° | 26.1 ± 0.5 | kcal/mol | C | Bernloehr, Beckhaus, et al., 1984 | Uc=-11044.0±3.5 cal/g; ALS |
| ΔsubH° | 26.05 | kcal/mol | N/A | Bernloehr, Beckhaus, et al., 1984 | DRB |
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.
Bernloehr, Beckhaus, et al., 1984
Bernloehr, W.; Beckhaus, H.D.; Peters, K.; Von Schnering, H.G.; Ruechardt, C.,
Thermolabile hydrocarbons. XXIV. Hexacyclo propylethane - structure, thermochemistry, and stability,
Chem. Ber., 1984, 117, 1013-1025. [all data]
Chickos, Hesse, et al., 1995
Chickos, James S.; Hesse, Donald G.; Hosseini, Sarah; Liebman, Joel F.; David Mendenhall, G.; Verevkin, Sergej P.; Rakus, Klaus; Beckhaus, Hans-Dieter; Rüchardt, Christoph,
Enthalpies of vaporization of some highly branched hydrocarbons,
The Journal of Chemical Thermodynamics, 1995, 27, 6, 693-705, https://doi.org/10.1006/jcht.1995.0071
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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