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Cyclopentane, ethyl-

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Gas 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
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Deltafgas-127.1 ± 1.0kJ/molCcbProsen, Johnson, et al., 1946ALS
Deltafgas-129.4kJ/molN/AMoore, Renquist, et al., 1940Value computed using «DELTA»fHliquid° value of -165.8±1.6 kj/mol from Moore, Renquist, et al., 1940 and «DELTA»vapH° value of 36.4 kj/mol from Prosen, Johnson, et al., 1946.; DRB
Quantity Value Units Method Reference Comment
gas378.32J/mol*KN/AStull D.R., 1969This value was obtained using low temperature data of [ Gross M.E., 1953].; GT

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
49.4850.Thermodynamics Research Center, 1997p=1 bar. Selected values are in close agreement with those calculated by a method of increments [ Kilpatrick J.E., 1947].; GT
65.17100.
77.76150.
92.61200.
122.1273.15
133.6298.15
134.5300.
182.0400.
224.8500.
260.6600.
290.5700.
315.7800.
337.1900.
355.41000.
371.21100.
384.71200.
396.41300.
406.51400.
415.21500.
432.51750.
445.02000.
454.22250.
461.12500.
466.52750.
470.73000.

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
Deltafliquid-163.5 ± 1.0kJ/molCcbProsen, Johnson, et al., 1946ALS
Deltafliquid-165.8 ± 1.6kJ/molCcbMoore, Renquist, et al., 1940Reanalyzed by Cox and Pilcher, 1970, Original value = -167.2 kJ/mol; ALS
Quantity Value Units Method Reference Comment
Deltacliquid-4591.94 ± 0.92kJ/molCcbProsen, Johnson, et al., 1946Corresponding «DELTA»fliquid = -163.4 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacliquid-4589.6 ± 1.5kJ/molCcbMoore, Renquist, et al., 1940Reanalyzed by Cox and Pilcher, 1970, Original value = -4587.6 ± 1.5 kJ/mol; Corresponding «DELTA»fliquid = -165.8 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid279.91J/mol*KN/AGross, Oliver, et al., 1953DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
187.61301.83Gross, Oliver, et al., 1953T = 13 to 300 K. Unsmoothed experimental datum.; DH

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase 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: 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

Hydrogen + 1-Ethylcyclopentene = Cyclopentane, ethyl-

By formula: H2 + C7H12 = C7H14

Quantity Value Units Method Reference Comment
Deltar-101.9 ± 0.63kJ/molChydAllinger, Dodziuk, et al., 1982liquid phase; solvent: Hexane
Deltar-98.3 ± 0.8kJ/molChydRogers and McLafferty, 1971liquid phase; solvent: Hydrocarbon
Deltar-98.58 ± 0.46kJ/molChydTurner and Garner, 1958liquid phase; solvent: Acetic acid
Deltar-98.58 ± 0.46kJ/molChydTurner and Garner, 1957liquid phase; solvent: Acetic acid

Hydrogen + Cyclopentane, ethylidene- = Cyclopentane, ethyl-

By formula: H2 + C7H12 = C7H14

Quantity Value Units Method Reference Comment
Deltar-106.9 ± 0.4kJ/molChydAllinger, Dodziuk, et al., 1982liquid phase; solvent: Hexane
Deltar-101. ± 0.8kJ/molChydRogers and McLafferty, 1971liquid phase; solvent: Hydrocarbon
Deltar-104.1 ± 0.50kJ/molChydTurner and Garner, 1958liquid phase; solvent: Acetic acid
Deltar-104.1 ± 0.50kJ/molChydTurner and Garner, 1957liquid phase; solvent: Acetic acid

Hydrogen + Vinylcyclopentane = Cyclopentane, ethyl-

By formula: H2 + C7H12 = C7H14

Quantity Value Units Method Reference Comment
Deltar-119. ± 0.8kJ/molChydRogers and McLafferty, 1971liquid phase; solvent: Hydrocarbon

Hydrogen + Cyclopentene, 3-ethyl- = Cyclopentane, ethyl-

By formula: H2 + C7H12 = C7H14

Quantity Value Units Method Reference Comment
Deltar-114.5 ± 0.46kJ/molChydAllinger, Dodziuk, et al., 1982liquid phase; solvent: Hexane

2Hydrogen + 3-(cis-Ethylidene)-1-cyclopentene = Cyclopentane, ethyl-

By formula: 2H2 + C7H10 = C7H14

Quantity Value Units Method Reference Comment
Deltar-211. ± 0.4kJ/molChydRoth, Adamczak, et al., 1991liquid phase

3Hydrogen + 6-Methylfulvene = Cyclopentane, ethyl-

By formula: 3H2 + C7H8 = C7H14

Quantity Value Units Method Reference Comment
Deltar-312. ± 0.4kJ/molChydRoth, Adamczak, et al., 1991liquid phase

3Hydrogen + Spiro[2,4]hepta-4,6-diene = Cyclopentane, ethyl-

By formula: 3H2 + C7H8 = C7H14

Quantity Value Units Method Reference Comment
Deltar-364. ± 0.8kJ/molChydRoth, Adamczak, et al., 1991liquid phase

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Notes

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

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]

Moore, Renquist, et al., 1940
Moore, G.E.; Renquist, M.L.; Parks, G.S., Thermal data on organic compounds. XX. Modern combustion data for two methylnonanes, methyl ethyl ketone, thiophene and six cycloparaffins, J. Am. Chem. Soc., 1940, 62, 1505-1507. [all data]

Stull D.R., 1969
Stull D.R., Jr., The Chemical Thermodynamics of Organic Compounds. Wiley, New York, 1969. [all data]

Gross M.E., 1953
Gross M.E., Low-temperature thermal data for some C7H14 alkylcyclopentanes, J. Am. Chem. Soc., 1953, 75, 2801-2804. [all data]

Thermodynamics Research Center, 1997
Thermodynamics Research Center, Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]

Kilpatrick J.E., 1947
Kilpatrick J.E., Heats, equilibrium constants, and free energies of formation of the alkylcyclopentanes and alkylcyclohexanes, J. Res. Nat. Bur. Stand., 1947, 39, 523-543. [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]

Gross, Oliver, et al., 1953
Gross, M.E.; Oliver, G.D.; Huffman, H.M., Low-temperature thermal data for some C7H14 alkylcyclopentanes, J. Am. Chem. Soc., 1953, 75, 2801-2804. [all data]

Allinger, Dodziuk, et al., 1982
Allinger, N.L.; Dodziuk, H.; Rogers, D.W.; Naik, S.N., Heats of hydrogenation and formation of some 5-membered ring compounds by molecular mechanics calculations and direct measurements, Tetrahedron, 1982, 38, 1593-1597. [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]

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]


Notes

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