1,1,10,10-Tetramethylcyclooctadecane
- Formula: C22H44
- Molecular weight: 308.5848
- IUPAC Standard InChI: InChI=1S/C22H44/c1-21(2)17-13-9-5-7-11-15-19-22(3,4)20-16-12-8-6-10-14-18-21/h5-20H2,1-4H3
- IUPAC Standard InChIKey: HEYYLLOULCSVBY-UHFFFAOYSA-N
- CAS Registry Number: 23014-56-4
- Chemical structure:
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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
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 359. | K | N/A | Björnstad, Borgen, et al., 1974 | Uncertainty assigned by TRC = 0.2 K; TRC |
| Tfus | 359. | K | N/A | Borgen and Dale, 1969 | Uncertainty assigned by TRC = 1. K; TRC |
Enthalpy of fusion
| ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 9.4601 | 359. | Borgen and Dale, 1969, 2 | DH |
| 9.460 | 359.2 | Björnstad, Borgen, et al., 1974, 2 | AC |
Entropy of fusion
| ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 26.3 | 359. | Borgen and Dale, 1969, 2 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Björnstad, Borgen, et al., 1974
Björnstad, S.L.; Borgen, G.; Gaupset, G.,
Syntheses and Conformations of gem-Dimethyl Substituted Cyclo-octadecanes. The 1,1-Dimethyl and the 1,1,4,4-Tetramethyl Derivatives.,
Acta Chem. Scand., 1974, 28b, 821, https://doi.org/10.3891/acta.chem.scand.28b-0821
. [all data]
Borgen and Dale, 1969
Borgen, G.; Dale, J.,
gem-Dimethyl substituted cyclooctadecanes, conformational homogeneity of the 1,1,4,4,10,10,13,13-octamethyl derivative,
J. Chem. Soc., 1969, 1969, 447-8. [all data]
Borgen and Dale, 1969, 2
Borgen, G.; Dale, J.,
gem-Dimethyl substituted cyclooctadecanes, conformational homogeneity of the 1,1,4,4,10,10,13,13-octamethyl derivative,
J. Chem. Soc., 1969, D, Chem. [all data]
Björnstad, Borgen, et al., 1974, 2
Björnstad, S.L.; Borgen, G.; Gaupset, G.; Szabo-Lin, Ilona; Guthenberg, Claes; Mannervik, Bengt,
Syntheses and Conformations of gem-Dimethyl Substituted Cyclo-octadecanes. The 1,1-Dimethyl and the 1,1,4,4-Tetramethyl Derivatives.,
Acta Chem. Scand., 1974, 28b, 821-822, https://doi.org/10.3891/acta.chem.scand.28b-0821
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tfus Fusion (melting) point ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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