Cyclooctane
- Formula: C8H16
- Molecular weight: 112.2126
- IUPAC Standard InChIKey: WJTCGQSWYFHTAC-UHFFFAOYSA-N
- CAS Registry Number: 292-64-8
- 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: Octamethylene
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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 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°liquid | -169.4 ± 1.6 | kJ/mol | Ccb | Spitzer and Huffman, 1947 | Reanalyzed by Cox and Pilcher, 1970, Original value = -169.9 ± 2.5 kJ/mol; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -5265.7 ± 0.9 | kJ/mol | Ccb | Kaarsemaker and Coops, 1952 | Corresponding ΔfHºliquid = -169.0 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -5265.3 ± 1.6 | kJ/mol | Ccb | Spitzer and Huffman, 1947 | Reanalyzed by Cox and Pilcher, 1970, Original value = -5264.9 ± 1.6 kJ/mol; Corresponding ΔfHºliquid = -169.4 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 262.00 | J/mol*K | N/A | Finke, Scott, et al., 1956 | DH |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -5252.6 | kJ/mol | Ccb | Ruzieka and Schlapfer, 1933 | Heat of combustion corrected for pressure; Corresponding ΔfHºsolid = -182. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
215.78 | 298.15 | Shiohama, Ogawa, et al., 1988 | DH |
215.53 | 298.15 | Tanaka, 1985 | DH |
215.461 | 298.15 | Fortier, D'Arcy, et al., 1979 | DH |
214.53 | 298.15 | Wilhelm, Faradjzadeh, et al., 1979 | DH |
214.24 | 298.15 | Jolicoeur, Boileau, et al., 1975 | DH |
215.48 | 298.15 | Finke, Scott, et al., 1956 | T = 12 to 330 K.; DH |
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.
Spitzer and Huffman, 1947
Spitzer, R.; Huffman, H.M.,
The heats of combustion of cyclopentane, cyclohexane, cycloheptane and cyclooctane,
J. Am. Chem. Soc., 1947, 69, 211-213. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Kaarsemaker and Coops, 1952
Kaarsemaker, S.; Coops, J.,
Thermal quantities of some cycloparaffins. Part III. Results of measurements,
Rec. Trav. Chim. Pays/Bas, 1952, 71, 261. [all data]
Finke, Scott, et al., 1956
Finke, H.L.; Scott, D.W.; Gross, M.E.; Messerly, J.F.; Waddington, G.,
Cycloheptane, cyclooctane and 1,3,5-cycloheptatriene. Low temperature thermal properties, vapor pressure and derived chemical thermodynamic properties,
J. Am. Chem. Soc., 1956, 78, 5469-5476. [all data]
Ruzieka and Schlapfer, 1933
Ruzieka, L.; Schlapfer, P.,
Zur kenntnis des kohlenstoffringes XXII. Uber die verbrennungswarme bei hochgliedrigen ringverbindungen,
Helv. Chim. Acta, 1933, 16, 162-169. [all data]
Shiohama, Ogawa, et al., 1988
Shiohama, Y.; Ogawa, H.; Murakami, S.; Fujihara, I.,
Excess thermodynamic properties of (cis-decalin or trans-decalin + cyclohexane or methylcyclohexane or cyclooctane) at 298.15 K,
J. Chem. Thermodynam., 1988, 20, 1307-1314. [all data]
Tanaka, 1985
Tanaka, R.,
Excess heat capacities for mixtures of benzene with cyclopentane, methylcyclohexane, and cyclooctane at 298.15 K,
J. Chem. Eng. Data, 1985, 30, 267-269. [all data]
Fortier, D'Arcy, et al., 1979
Fortier, J.-L.; D'Arcy, P.J.; Benson, G.C.,
Heat capacities of binary cycloalkane mixtures at 298.15 K,
Thermochim. Acta, 1979, 28, 37-43. [all data]
Wilhelm, Faradjzadeh, et al., 1979
Wilhelm, E.; Faradjzadeh, A.; Grolier, J.-P.E.,
Molar excess heat capacities and excess volumes of 1,2-dichloroethane + cyclooctane, + mesitylene, and + tetrachloromethane,
J. Chem. Thermodynam., 1979, 11, 979-984. [all data]
Jolicoeur, Boileau, et al., 1975
Jolicoeur, C.; Boileau, J.; Bazinet, S.; Picker, P.,
Thermodynamic properties of aqueous organic solutes in relation to their structure. Part II. Apparent molal volumes and heat capacities of c-alkylamine hydrobromides in water,
Can. J. Chem., 1975, 53, 716-722. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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