1,4,7,10,13,16-Hexaoxacyclooctadecane
- Formula: C12H24O6
- Molecular weight: 264.3154
- IUPAC Standard InChI: InChI=1S/C12H24O6/c1-2-14-5-6-16-9-10-18-12-11-17-8-7-15-4-3-13-1/h1-12H2
- IUPAC Standard InChIKey: XEZNGIUYQVAUSS-UHFFFAOYSA-N
- CAS Registry Number: 17455-13-9
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Ethylene oxide cyclic hexamer; 18-Crown-6; 18-Crown-6 ether; Crown ether 18-crown-6
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Condensed phase thermochemistry data
Go To: Top, 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 |
|---|---|---|---|---|---|
| ΔcH°liquid | -7061.8 ± 7.5 | kJ/mol | Ccb | Moses and Larson, 1980 | Corresponding ΔfHºliquid = -1090.3 kJ/mol (simple calculation by NIST; no Washburn corrections) |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -1081.1 ± 2.8 | kJ/mol | Ccb | Vasil'ev, Borodin, et al., 1992 | Authors Hf298_condensed=-1037.0±2.8 kJ/mol |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -7071.0 ± 4.9 | kJ/mol | Ccb | Vasil'ev, Borodin, et al., 1992 | Authors Hf298_condensed=-1037.0±2.8 kJ/mol; Corresponding ΔfHºsolid = -1081.1 kJ/mol (simple calculation by NIST; no Washburn corrections) |
References
Go To: Top, 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.
Moses and Larson, 1980
Moses, D.J.; Larson, J.W.,
Electrostatic ring strain in crown ethers,
Abstract of papers, 179th ACS National Meeting, Houston, TX, 1980, 984. [all data]
Vasil'ev, Borodin, et al., 1992
Vasil'ev, V.P.; Borodin, V.A.; Kopnyshev, S.B.,
Standard enthalpies of formation of certain crown-ethers,
Russ. J. Phys. Chem. (Engl. Transl.), 1992, 66, 585-587, In original 1104. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔcH°solid Enthalpy of combustion of solid 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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