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Cyclopentane, methylene-

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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
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Deltafgas2.43kcal/molChydAllinger, Dodziuk, et al., 1982ALS

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
24.410298.15Andreevskii D.N., 1976GT
24.579300.
33.681400.
41.730500.
48.430600.
54.001700.
58.681800.
62.641900.
66.0211000.

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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Deltafliquid-4.82 ± 0.21kcal/molCcbLabbauf and Rossini, 1961 
Quantity Value Units Method Reference Comment
Deltacliquid-901.08 ± 0.19kcal/molCcbLabbauf and Rossini, 1961Corresponding «DELTA»fliquid = -4.80 kcal/mol (simple calculation by NIST; no Washburn corrections)

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, Chris Muzny, director

Quantity Value Units Method Reference Comment
Tboil349. ± 4.KAVGN/AAverage of 14 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus145.32KN/AAnonymous, 1958Uncertainty assigned by TRC = 0.5 K; TRC
Tfus146.0KN/AAnonymous, 1958Uncertainty assigned by TRC = 0.15 K; TRC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, 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 + Cyclopentane, methylene- = Cyclopentane, methyl-

By formula: H2 + C6H10 = C6H12

Quantity Value Units Method Reference Comment
Deltar-27.70 ± 0.23kcal/molChydAllinger, Dodziuk, et al., 1982liquid phase; solvent: Hexane
Deltar-26.88 ± 0.02kcal/molChydTurner and Garner, 1958liquid phase; solvent: Acetic acid
Deltar-26.85 ± 0.05kcal/molChydTurner and Garner, 1957liquid phase; solvent: Acetic acid
Deltar-26.82 ± 0.08kcal/molChydTurner and Garner, 1957, 2liquid phase; solvent: Acetic acid

Cyclopentene, 1-methyl- = Cyclopentane, methylene-

By formula: C6H10 = C6H10

Quantity Value Units Method Reference Comment
Deltar3.78 ± 0.20kcal/molEqkYursha and Kabo, 1975gas phase

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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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-6766
NIST MS number 238669

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References

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

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]

Andreevskii D.N., 1976
Andreevskii D.N., The similar structures method in thermodynamics of C3-C5 methylenecycloalkanes, Zh. Strukt. Khim., 1976, 17, 51-57. [all data]

Labbauf and Rossini, 1961
Labbauf, A.; Rossini, F.D., Heats of combustion, formation, and hydrogenation of 14 selected cyclomonoolefin hydrocarbons, J. Phys. Chem., 1961, 65, 476-480. [all data]

Anonymous, 1958
Anonymous, R., , Am. Pet. Inst. Res. Proj. 45, Ohio State Univ., 1958. [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]

Yursha and Kabo, 1975
Yursha, I.A.; Kabo, G.Ya., Thermodynamics of the isomerisation of methylcyclopentines, Russ. J. Phys. Chem. (Engl. Transl.), 1975, 49, 765-766. [all data]


Notes

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