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Cyclopentane, methyl-

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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:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Deltafgas-106.0kJ/molN/AGood and Smith, 1969Value computed using «DELTA»fHliquid° value of -137.7±0.7 kj/mol from Good and Smith, 1969 and «DELTA»vapH° value of 31.7 kj/mol from Prosen, Johnson, et al., 1946.; DRB
Deltafgas-106.7 ± 0.84kJ/molCcbProsen, Johnson, et al., 1946ALS
Deltafgas-108.1kJ/molN/AMoore, Renquist, et al., 1940Value computed using «DELTA»fHliquid° value of -139.8±1.7 kj/mol from Moore, Renquist, et al., 1940 and «DELTA»vapH° value of 31.7 kj/mol from Prosen, Johnson, et al., 1946.; DRB

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
43.3150.Thermodynamics Research Center, 1997p=1 bar. Selected values of S(T) and Cp(T) are in close agreement with those calculated by [ Scott D.W., 1960] at low temperatures. Discrepancies increase up to 1.8 J/mol*K at 1000-1500 K.; GT
53.01100.
62.63150.
74.75200.
99.62273.15
109.5298.15
110.3300.
151.5400.
188.9500.
220.3600.
246.6700.
268.6800.
287.4900.
303.41000.
317.11100.
328.91200.
339.01300.
347.81400.
355.41500.
370.41750.
381.12000.
389.12250.
395.12500.
399.72750.
403.33000.

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
124.24 ± 0.25333.20McCullough J.P., 1959GT
136.21 ± 0.27362.55
152.15 ± 0.30402.35
165.21 ± 0.33436.25
178.17 ± 0.36471.05

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-137.7 ± 0.71kJ/molCcbGood and Smith, 1969ALS
Deltafliquid-138.4 ± 0.84kJ/molCcbProsen, Johnson, et al., 1946ALS
Deltafliquid-139.8 ± 1.7kJ/molCcbMoore, Renquist, et al., 1940Reanalyzed by Cox and Pilcher, 1970, Original value = -141.1 kJ/mol; see Moore and Parks, 1939; ALS
Quantity Value Units Method Reference Comment
Deltacliquid-3938.3 ± 0.59kJ/molCcbGood and Smith, 1969Corresponding «DELTA»fliquid = -137.7 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacliquid-3937.7 ± 0.75kJ/molCcbProsen, Johnson, et al., 1946Corresponding «DELTA»fliquid = -138.3 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacliquid-3936.2 ± 1.7kJ/molCcbMoore, Renquist, et al., 1940Reanalyzed by Cox and Pilcher, 1970, Original value = -3934.5 ± 1.7 kJ/mol; see Moore and Parks, 1939; Corresponding «DELTA»fliquid = -139.8 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacliquid-3956.kJ/molCcbZubova, 1901Corresponding «DELTA»fliquid = -120. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid247.78J/mol*KN/ADouslin and Huffman, 1946DH
liquid247.7J/mol*KN/AHuffman, Parks, et al., 1931Extrapolation below 90 K, 57.86 J/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
157.66293.15Siddiqi, Svejda, et al., 1983DH
159.12299.8Connolly, Sage, et al., 1951T = 80 to 200°F.; DH
158.70298.15Douslin and Huffman, 1946T = 12 to 300 K.; DH
157.3295.7Huffman, Parks, et al., 1931T = 92 to 294 K. Value is unsmoothed experimental datum.; DH

Phase change 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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil345.0 ± 0.2KAVGN/AAverage of 35 out of 41 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus131. ± 1.KAVGN/AAverage of 30 out of 35 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple130.5 ± 0.6KAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Tc532.7 ± 0.2KN/ADaubert, 1996 
Tc532.7KN/AMajer and Svoboda, 1985 
Tc532.73KN/AKudchadker, Alani, et al., 1968Uncertainty assigned by TRC = 0.3 K; TRC
Tc532.7KN/AAmbrose, Cox, et al., 1960Uncertainty assigned by TRC = 0.2 K; Vis, PRT, IPTS-48; TRC
Tc532.76KN/AKay, 1947Uncertainty assigned by TRC = 0.05 K; TRC
Quantity Value Units Method Reference Comment
Pc37.9 ± 0.4barN/ADaubert, 1996 
Pc37.84barN/AKudchadker, Alani, et al., 1968Uncertainty assigned by TRC = 0.4053 bar; TRC
Pc37.8591barN/AKay, 1947Uncertainty assigned by TRC = 0.0506 bar; TRC
Quantity Value Units Method Reference Comment
Vc0.318l/molN/ADaubert, 1996 
Quantity Value Units Method Reference Comment
rhoc3.14 ± 0.04mol/lN/ADaubert, 1996 
rhoc3.137mol/lN/AKudchadker, Alani, et al., 1968Uncertainty assigned by TRC = 0.05 mol/l; TRC
rhoc3.14mol/lN/AKay, 1947Uncertainty assigned by TRC = 0.02 mol/l; TRC
Quantity Value Units Method Reference Comment
Deltavap31.7 ± 0.1kJ/molAVGN/AAverage of 6 values; Individual data points

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
29.08345.N/AMajer and Svoboda, 1985 
31.4315.N/ASapei, Uusi-Kyyny, et al., 2010Based on data from 300. - 345. K.; AC
31.9303.A,MMStephenson and Malanowski, 1987Based on data from 288. - 346. K. See also Willingham, Taylor, et al., 1945.; AC
31.33 ± 0.02304.VMcCullough, Pennington, et al., 1959ALS
31.3 ± 0.1304.CMcCullough, Pennington, et al., 1959AC
30.2 ± 0.1326.CMcCullough, Pennington, et al., 1959AC
29.1 ± 0.1345.CMcCullough, Pennington, et al., 1959AC

Enthalpy of vaporization

ΔvapH = A exp(-βTr) (1 − Tr)β
    ΔvapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
    Tr = reduced temperature (T / Tc)

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Temperature (K) A (kJ/mol) beta Tc (K) Reference Comment
298. - 345.45.980.271532.7Majer and Svoboda, 1985 

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference
288.18 - 345.783.987731186.059-47.108Williamham, Taylor, et al., 1945

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
6.9287130.73Douslin and Huffman, 1946DH
6.93130.7Domalski and Hearing, 1996AC
6.883130.1Huffman, Parks, et al., 1931DH

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
53.00130.73Douslin and Huffman, 1946DH
52.9130.1Huffman, Parks, et al., 1931DH

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Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), 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 + Cyclopentene, 1-methyl- = Cyclopentane, methyl-

By formula: H2 + C6H10 = C6H12

Quantity Value Units Method Reference Comment
Deltar-100.8 ± 0.63kJ/molChydRogers, Crooks, et al., 1987liquid phase
Deltar-101.3 ± 0.50kJ/molChydAllinger, Dodziuk, et al., 1982liquid phase; solvent: Hexane
Deltar-96.3 ± 0.2kJ/molChydTurner and Garner, 1958liquid phase; solvent: Acetic acid
Deltar-96.3 ± 0.2kJ/molChydTurner and Garner, 1957liquid phase; solvent: Acetic acid
Deltar-96.3 ± 0.2kJ/molChydTurner and Garner, 1957, 2liquid phase; solvent: Acetic acid

Hydrogen + Cyclopentane, methylene- = Cyclopentane, methyl-

By formula: H2 + C6H10 = C6H12

Quantity Value Units Method Reference Comment
Deltar-115.9 ± 0.96kJ/molChydAllinger, Dodziuk, et al., 1982liquid phase; solvent: Hexane
Deltar-112.5 ± 0.08kJ/molChydTurner and Garner, 1958liquid phase; solvent: Acetic acid
Deltar-112.3 ± 0.2kJ/molChydTurner and Garner, 1957liquid phase; solvent: Acetic acid
Deltar-112.2 ± 0.3kJ/molChydTurner and Garner, 1957, 2liquid phase; solvent: Acetic acid

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

By formula: C6H10 + H2 = C6H12

Quantity Value Units Method Reference Comment
Deltar-115.4 ± 0.75kJ/molChydAllinger, Dodziuk, et al., 1982liquid phase; solvent: Hexane

Cyclopentane, methyl- = Cyclohexane

By formula: C6H12 = C6H12

Quantity Value Units Method Reference Comment
Deltar-14.69kJ/molEqkGlasebrook and Lovell, 1939liquid phase; Heat of isomerization

2Hydrogen + Bicyclo(3.1.0)hex-2-ene = Cyclopentane, methyl-

By formula: 2H2 + C6H8 = C6H12

Quantity Value Units Method Reference Comment
Deltar-264. ± 0.8kJ/molChydRoth, Adamczak, et al., 1991liquid phase

3Hydrogen + Fulvene = Cyclopentane, methyl-

By formula: 3H2 + C6H6 = C6H12

Quantity Value Units Method Reference Comment
Deltar-330. ± 0.4kJ/molChydRoth, Adamczak, et al., 1991liquid phase

2Hydrogen + 3-Methylenecyclopentene = Cyclopentane, methyl-

By formula: 2H2 + C6H8 = C6H12

Quantity Value Units Method Reference Comment
Deltar-221. ± 0.8kJ/molChydRoth, Adamczak, et al., 1991liquid phase

Cyclohexane = Cyclopentane, methyl-

By formula: C6H12 = C6H12

Quantity Value Units Method Reference Comment
Deltar18.1 ± 1.2kJ/molEqkKabo and Andreevskii, 1973liquid phase

IR Spectrum

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

Data compiled by: Coblentz Society, Inc.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director


Mass spectrum (electron ionization)

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass 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 Japan AIST/NIMC Database- Spectrum MS-NW-1064
NIST MS number 227793

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References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, 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.

Good and Smith, 1969
Good, W.D.; Smith, N.K., Enthalpies of combustion of toluene, benzene, cyclohexane, cyclohexene, methylcyclopentane, 1-methylcyclopentene, and n-hexane, J. Chem. Eng. Data, 1969, 14, 102-106. [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]

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]

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]

Scott D.W., 1960
Scott D.W., Chemical thermodynamic properties of methylcyclopentane and 1-cis-3-dimethylcyclopentane, J. Phys. Chem., 1960, 64, 906-908. [all data]

McCullough J.P., 1959
McCullough J.P., Thermodynamics of cyclopentane, methylcyclopentane and 1,cis-3-dimethylcyclopentane: verification of the concept of pseudorotation, J. Am. Chem. Soc., 1959, 81, 5880-5883. [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]

Moore and Parks, 1939
Moore, G.E.; Parks, G.S., New thermodynamic data for the cyclohexane-methylcyclopentane isomerization, J. Am. Chem. Soc., 1939, 61, 2561-2562. [all data]

Zubova, 1901
Zubova, P., Data about heat of combustion of compound cycle structure, Zh. Fiz. Khim., 1901, 33, 708-722. [all data]

Douslin and Huffman, 1946
Douslin, D.R.; Huffman, H.M., The heat capacities, heats of transition, heats of fusion and entropies of cyclopentane, methylcyclopentane and methylcylohexane, J. Am. Chem. Soc., 1946, 68, 173-176. [all data]

Huffman, Parks, et al., 1931
Huffman, H.M.; Parks, G.S.; Barmore, M., Thermal data on organic compounds. X. Further studies on the heat capacities, entropies and free energies of hydrocarbons, J. Am. Chem. Soc., 1931, 53, 3876-3888. [all data]

Siddiqi, Svejda, et al., 1983
Siddiqi, M.A.; Svejda, P.; Kohler, F., A generalized van der Waals equation of state II. Excess heat capacities of mixtures containing cycloalkanes (C5,C6), methylcycloalkanes (C5,C6) and n-decane, Ber. Bunsenges. Phys. Chem., 1983, 87, 1176-1181. [all data]

Connolly, Sage, et al., 1951
Connolly, T.J.; Sage, B.H.; Lacey, W.N., Isobaric heat capacities at bubble point. n-Hexane, methylcyclopentane, and n-octane, Ind. Eng. Chem., 1951, 43, 946-950. [all data]

Daubert, 1996
Daubert, T.E., Vapor-Liquid Critical Properties of Elements and Compounds. 5. Branched Alkanes and Cycloalkanes, J. Chem. Eng. Data, 1996, 41, 365-372. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

Kudchadker, Alani, et al., 1968
Kudchadker, A.P.; Alani, G.H.; Zwolinski, B.J., The Critical Constants of Organic Substances, Chem. Rev., 1968, 68, 659. [all data]

Ambrose, Cox, et al., 1960
Ambrose, D.; Cox, J.D.; Townsend, R., The critical temperatures of forty organic compounds, Trans. Faraday Soc., 1960, 56, 1452. [all data]

Kay, 1947
Kay, W.B., Vapor Pressures and Saturated Liquid and Vapor DEensities of Cyclopentane, Methylcyclopentane, Ethylcyclopentane, and Methylcyclohexane, J. Am. Chem. Soc., 1947, 69, 1273-7. [all data]

Sapei, Uusi-Kyyny, et al., 2010
Sapei, Erlin; Uusi-Kyyny, Petri; Keskinen, Kari I.; Alopaeus, Ville, Phase equilibria of binary systems of 3-methylthiophene with four different hydrocarbons, Fluid Phase Equilibria, 2010, 288, 1-2, 155-160, https://doi.org/10.1016/j.fluid.2009.11.004 . [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Willingham, Taylor, et al., 1945
Willingham, C.B.; Taylor, W.J.; Pignocco, J.M.; Rossini, F.D., Vapor pressures and boiling points of some paraffin, alkylcyclopentane, alkylcyclohexane, and alkylbenzene hydrocarbons, J. RES. NATL. BUR. STAN., 1945, 35, 3, 219-17, https://doi.org/10.6028/jres.035.009 . [all data]

McCullough, Pennington, et al., 1959
McCullough, J.P.; Pennington, R.E.; Smith, J.C.; Hossenlopp, I.A.; Waddington, G., Thermodynamics of cyclopentane, methylcyclopentane and 1,cis-3-dimethylcyclopentane: Verification of the concept of pseudorotation, J. Am. Chem. Soc., 1959, 81, 5880-5883. [all data]

Williamham, Taylor, et al., 1945
Williamham, C.B.; Taylor, W.J.; Pignocco, J.M.; Rossini, F.D., Vapor Pressures and Boiling Points of Some Paraffin, Alkylcyclopentane, Alkylcyclohexane, and Alkylbenzene Hydrocarbons, J. Res. Natl. Bur. Stand. (U.S.), 1945, 35, 3, 219-244, https://doi.org/10.6028/jres.035.009 . [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Rogers, Crooks, et al., 1987
Rogers, D.W.; Crooks, E.; Dejroongruang, K., Enthalpies of hydrogenation of the hexenes, J. Chem. Thermodyn., 1987, 19, 1209-1215. [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]

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]

Turner and Garner, 1957, 2
Turner, R.B.; Garner, R.H., The stability relationship of 1-methyl-cyclopentene and methylenecyclopentane, J. Am. Chem. Soc., 1957, 79, 253. [all data]

Glasebrook and Lovell, 1939
Glasebrook, A.L.; Lovell, W.G., The isomerization of cyclohexane and methylcyclopentane, J. Am. Chem. Soc., 1939, 61, 1717-1720. [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]

Kabo and Andreevskii, 1973
Kabo, G.Ya.; Andreevskii, D.N., Thermodynamic characteristics of the cyclohexane = methylcyclopentane isomerization, Zh. Fiz. Khim., 1973, 47, 272-273. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), References