Pentacyclo[18.2.2.2(9,12).0(4,15).0(6,17)]hexacosa-4,6(17),9,11,15,20,22,23,25-nonane
- Formula: C26H26
- Molecular weight: 338.4846
- IUPAC Standard InChI: InChI=1S/C26H26/c1-2-21-10-14-25-17-24-13-9-20-6-4-19(5-7-20)8-12-23(25)18-26(24)15-11-22(3-1)16-21/h1-7,16-18H,8-15H2
- IUPAC Standard InChIKey: REXZNBNRGIQZSK-UHFFFAOYSA-N
- CAS Registry Number: 35117-21-6
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 78.0 | kcal/mol | Semi | Stewart, 2004 | |
| ΔfH°gas | 97.9 ± 1.3 | kcal/mol | Ccb | Nishiyama, Sakiyama, et al., 1980 | ALS |
Condensed phase thermochemistry data
Go To: Top, Gas 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°solid | 67.8 ± 1.2 | kcal/mol | Ccb | Nishiyama, Sakiyama, et al., 1980 | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -3401.26 ± 0.86 | kcal/mol | Ccb | Nishiyama, Sakiyama, et al., 1980 | Corresponding ΔfHºsolid = 67.835 kcal/mol (simple calculation by NIST; no Washburn corrections) |
References
Go To: Top, Gas phase thermochemistry data, 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.
Stewart, 2004
Stewart, J.J.P.,
Comparison of the accuracy of semiempirical and some DFT methods for predicting heats of formation,
J. Mol. Model, 2004, 10, 1, 6-10, https://doi.org/10.1007/s00894-003-0157-6
. [all data]
Nishiyama, Sakiyama, et al., 1980
Nishiyama, K.; Sakiyama, N.; Seki, S.; Horita, H.; Otsubo, T.; Misumi, S.,
Thermochemical studies on double- and triple-layered [2.2]paracyclophanes. Estimation of molecular strain energies.,
Bull. Chem. Soc. Jpn., 1980, 53, 869-877. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References
- Symbols used in this document:
ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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