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:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Options:
Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, NIST Subscription Links, 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, NIST Subscription Links, 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, NIST Subscription Links, 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, NIST Subscription Links, 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, NIST Subscription Links, 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
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.