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
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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°gas | 466.5 | kJ/mol | Ccb | Bernloehr, Beckhaus, et al., 1984 | Uc=-11044.0±3.5 cal/g |
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 |
|---|---|---|---|---|---|
| ΔfH°solid | 357.5 ± 3.9 | kJ/mol | Ccb | Bernloehr, Beckhaus, et al., 1984 | Uc=-11044.0±3.5 cal/g; ALS |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 396.1 | 298.15 | Bernloehr, Beckhaus, et al., 1984 | DH |
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:
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° | 85.8 ± 0.2 | kJ/mol | GS | Chickos, Hesse, et al., 1995 | Based on data from 333. to 373. K.; AC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔsubH° | 109. ± 2. | kJ/mol | C | Bernloehr, Beckhaus, et al., 1984 | Uc=-11044.0±3.5 cal/g; ALS |
| ΔsubH° | 109.0 | kJ/mol | N/A | Bernloehr, Beckhaus, et al., 1984 | DRB |
References
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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
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- 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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