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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Reaction 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
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
By formula: H2 + C8H14 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -102. | kJ/mol | Chyd | Doering, Roth, et al., 1989 | liquid phase |
ΔrH° | -103. ± 0.8 | kJ/mol | Chyd | Roth and Lennartz, 1980 | liquid phase; solvent: Cyclohexane |
ΔrH° | -96.40 ± 0.71 | kJ/mol | Chyd | Rogers, Von Voithenberg, et al., 1978 | liquid phase; solvent: Hexane |
ΔrH° | -96.1 ± 0.4 | kJ/mol | Chyd | Turner and Meador, 1957 | liquid phase; solvent: Acetic acid |
ΔrH° | -97.40 ± 0.63 | kJ/mol | Chyd | Conn, Kistiakowsky, et al., 1939 | gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -98.4 ± 0.2 kJ/mol; At 355 K |
By formula: H2 + C8H14 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -144. ± 0.4 | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase; see Doering, Roth, et al., 1989 |
ΔrH° | -144.0 ± 1.8 | kJ/mol | Chyd | Rogers, Von Voithenberg, et al., 1978 | liquid phase; solvent: Hexane |
ΔrH° | -134.9 ± 0.88 | kJ/mol | Chyd | Turner and Meador, 1957 | liquid phase; solvent: Acetic acid |
By formula: 3H2 + C8H10 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -319.6 ± 1.8 | kJ/mol | Chyd | Turner, Mallon, et al., 1973 | liquid phase; solvent: Acetic acid |
ΔrH° | -302.8 ± 1.1 | kJ/mol | Chyd | Turner, Meador, et al., 1957 | liquid phase; solvent: Acetic acid |
By formula: 2H2 + C8H12 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -291. ± 0.8 | kJ/mol | Chyd | Roth, Hopf, et al., 1994 | liquid phase; solvent: Isooctane |
ΔrH° | -289. | kJ/mol | Chyd | Turner, Jarrett, et al., 1973 | liquid phase; solvent: Acetic acid |
By formula: C8H12 + 2H2 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -230. ± 0.4 | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase |
ΔrH° | -224.6 ± 0.08 | kJ/mol | Chyd | Turner, Mallon, et al., 1973 | liquid phase; solvent: Glacial acetic acid |
By formula: 2H2 + C8H12 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -208. | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase |
ΔrH° | -204.8 ± 0.3 | kJ/mol | Chyd | Turner, Mallon, et al., 1973 | liquid phase; solvent: Glacial acetic acid |
By formula: C8H12 + 2H2 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -217.9 ± 1.2 | kJ/mol | Chyd | Turner, Mallon, et al., 1973 | liquid phase; solvent: Glacial acetic acid |
By formula: 3H2 + C8H10 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -334.3 ± 0.71 | kJ/mol | Chyd | Turner, Mallon, et al., 1973 | liquid phase; solvent: Glacial acetic acid |
By formula: 4H2 + C8H8 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -409.9 ± 0.2 | kJ/mol | Chyd | Turner, Meador, et al., 1957 | liquid phase; solvent: Acetic acid |
By formula: 4H2 + C8H8 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 640. ± 1. | kJ/mol | Chyd | Roth, Hopf, et al., 1994 | liquid phase; solvent: Isooctane |
By formula: H2 + C8H14 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -94. ± 1. | kJ/mol | Chyd | Rogers and McLafferty, 1971 | liquid phase; solvent: Acetic acid |
By formula: 2H2 + C8H12 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -320. ± 0.4 | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase |
By formula: 2H2 + C8H12 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -271. ± 0.4 | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase |
By formula: 2H2 + C8H12 = C8H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -282. ± 0.4 | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase |
References
Go To: Top, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Doering, Roth, et al., 1989
Doering, W.E.; Roth, W.R.; Bauer, F.; Breuckmann, R.; Ebbrecht, T.; Herbold, M.; Schmidt, R.; Lennartz, H-W.; Lenoir, D.; Boese, R.,
Rotational barriers of strained olefines,
Chem. Ber., 1989, 122, 1263-1266. [all data]
Roth and Lennartz, 1980
Roth, W.R.; Lennartz, H.W.,
Heats of hydrogenation. I. Determination of heats of hydrogenation with an isothermal titration calorimeter,
Chem. Ber., 1980, 113, 1806-1817. [all data]
Rogers, Von Voithenberg, et al., 1978
Rogers, D.W.; Von Voithenberg, H.; Allinger, N.L.,
Heats of hydrogenation of the cis and trans isomers of cyclooctene,
J. Org. Chem., 1978, 43, 360-361. [all data]
Turner and Meador, 1957
Turner, R.B.; Meador, W.R.,
Heats of hydrogenation. IV. Hydrogenation of some cis- and trans-cycloolefins,
J. Am. Chem. Soc., 1957, 79, 4133-4136. [all data]
Conn, Kistiakowsky, et al., 1939
Conn, J.B.; Kistiakowsky, G.B.; Smith, E.A.,
Heats of organic reactions. VIII. Some further hydrogenations, including those of some acetylenes,
J. Am. Chem. Soc., 1939, 61, 1868-1876. [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]
Roth, Adamczak, et al., 1991
Roth, W.R.; Adamczak, O.; Breuckmann, R.; Lennartz, H.-W.; Boese, R.,
Die Berechnung von Resonanzenergien; das MM2ERW-Kraftfeld,
Chem. Ber., 1991, 124, 2499-2521. [all data]
Turner, Mallon, et al., 1973
Turner, R.B.; Mallon, B.J.; Tichy, M.; Doering, W.v.E.; Roth, W.R.; Schroder, G.,
Heats of hydrogenation. X. Conjugative interaction in cyclic dienes and trienes,
J. Am. Chem. Soc., 1973, 95, 8605-8610. [all data]
Turner, Meador, et al., 1957
Turner, R.B.; Meador, W.R.; Doering, W.E.; Knox, L.H.; Mayer, J.R.; Wiley, D.W.,
Heats of hydrogenation. III. Hydrogenation of cycllooctatetraene and of some seven-membered non-benzenoid aromatic compounds,
J. Am. Chem. Soc., 1957, 79, 4127-4133. [all data]
Roth, Hopf, et al., 1994
Roth, W.R.; Hopf, H.; Horn, C.,
Propargyl-Stabilisierungsenergie,
Chem. Ber., 1994, 127, 1781-1795. [all data]
Turner, Jarrett, et al., 1973
Turner, R.B.; Jarrett, A.D.; Goebel, P.; Mallon, B.J.,
Heats of hydrogenation. 9. Cyclic acetylenes and some miscellaneous olefins,
J. Am. Chem. Soc., 1973, 95, 790-792. [all data]
Rogers and McLafferty, 1971
Rogers, D.W.; McLafferty, F.J.,
A new hydrogen calorimeter. Heats of hydrogenation of allyl and vinyl unsaturation adjacent to a ring,
Tetrahedron, 1971, 27, 3765-3775. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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