Cyclohexane, ethyl-

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Condensed phase thermochemistry 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:
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
Δfliquid-213.kJ/molCcbBaroody and Carpenter, 1972ALS
Δfliquid-212.2 ± 1.5kJ/molCcbProsen, Johnson, et al., 1946ALS
Quantity Value Units Method Reference Comment
Δcliquid-5222.6 ± 1.5kJ/molCcbProsen, Johnson, et al., 1946Corresponding Δfliquid = -212.1 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid280.91J/mol*KN/AHuffman, Todd, et al., 1949DH
liquid281.6J/mol*KN/AParks, Moore, et al., 1949Extrapolation below 80 K, 57.74 J/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
211.79298.15Huffman, Todd, et al., 1949T = 12 to 310 K.; DH
214.2298.15Parks, Moore, et al., 1949T = 80 to 300 K.; DH

Reaction thermochemistry 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 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

Cyclohexane, ethylidene- + Hydrogen = Cyclohexane, ethyl-

By formula: C8H14 + H2 = C8H16

Quantity Value Units Method Reference Comment
Δr-110. ± 1.kJ/molChydRogers and McLafferty, 1971liquid phase; solvent: Hydrocarbon
Δr-110.1 ± 0.2kJ/molChydTurner and Garner, 1958liquid phase; solvent: Acetic acid
Δr-110.1 ± 0.2kJ/molChydTurner and Garner, 1957liquid phase; solvent: Acetic acid

Hydrogen + Cyclohexene, 1-ethyl- = Cyclohexane, ethyl-

By formula: H2 + C8H14 = C8H16

Quantity Value Units Method Reference Comment
Δr-104.9 ± 0.54kJ/molChydTurner and Garner, 1958liquid phase; solvent: Acetic acid
Δr-104.9 ± 0.54kJ/molChydTurner and Garner, 1957liquid phase; solvent: Acetic acid

Styrene + 4Hydrogen = Cyclohexane, ethyl-

By formula: C8H8 + 4H2 = C8H16

Quantity Value Units Method Reference Comment
Δr-320.1 ± 1.0kJ/molChydDolliver, Gresham, et al., 1937gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -324.2 ± 0.84 kJ/mol; At 355 °K

Ethylbenzene + 3Hydrogen = Cyclohexane, ethyl-

By formula: C8H10 + 3H2 = C8H16

Quantity Value Units Method Reference Comment
Δr-201.6 ± 0.42kJ/molChydDolliver, Gresham, et al., 1937gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -204.7 ± 0.4 kJ/mol; At 355 °K

Hydrogen + Cyclohexane, ethenyl- = Cyclohexane, ethyl-

By formula: H2 + C8H14 = C8H16

Quantity Value Units Method Reference Comment
Δr-117. ± 3.kJ/molChydRogers and McLafferty, 1971liquid phase; solvent: Hydrocarbon

Mass spectrum (electron ionization)

Go To: Top, Condensed phase thermochemistry data, Reaction 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin NIST Mass Spectrometry Data Center, 1990.
NIST MS number 113476

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References

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Mass spectrum (electron ionization), Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Baroody and Carpenter, 1972
Baroody, E.E.; Carpenter, G.A., Heats of formation of propellant compounds (U), Rpt. Naval Ordnance Systems Command Task No. 331-003/067-1/UR2402-001 for Naval Ordance Station, Indian Head, MD, 1972, 1-9. [all data]

Prosen, Johnson, et al., 1946
Prosen, E.J.; Johnson, W.H.; Rossini, F.D., Heats of formation and combustion of the normal alkylcyclopentanes and cyclohexanes and the increment per CH2 group for several homologous series of hydrocarbons, J. Res. NBS, 1946, 37, 51-56. [all data]

Huffman, Todd, et al., 1949
Huffman, H.M.; Todd, S.S.; Oliver, G.D., Low temperature thermal data on eight C8H16 alkylcyclohexanes, J. Am. Chem. Soc., 1949, 71, 584-592. [all data]

Parks, Moore, et al., 1949
Parks, G.S.; Moore, G.E.; Renquist, M.L.; Naylor, B.F.; McClaine, L.A.; Fujii, P.S.; Hatton, J.A., Thermal data on organic compounds. XXV. Some heat capacity, entropy and free energy data for nine hydrocarbons of high molecular weight, J. Am. Chem. Soc., 1949, 71, 3386-3389. [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]

Turner and Garner, 1958
Turner, R.B.; Garner, R.H., Heats of hydrogenation. V. Relative stabilities in certain exocyclic-endocyclic olefin pairs, J. Am. Chem. Soc., 1958, 80, 1424-1430. [all data]

Turner and Garner, 1957
Turner, R.B.; Garner, R.H., Heats of hydrogenation. V. Relative stabilities in certain exocyclic-endocyclic olefin pairs, J. Am. Chem. Soc., 1957, 80, 1424-1430. [all data]

Dolliver, Gresham, et al., 1937
Dolliver, M.a.; Gresham, T.L.; Kistiakowsky, G.B.; Vaughan, W.E., Heats of organic reactions. V. Heats of hydrogenation of various hydrocarbons, J. Am. Chem. Soc., 1937, 59, 831-841. [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]


Notes

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