Cyclopentene

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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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil317. ± 2.KAVGN/AAverage of 28 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus138. ± 1.KAVGN/AAverage of 8 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple138.13KN/AHuffman, Eaton, et al., 1948Crystal phase 1 phase; Uncertainty assigned by TRC = 0.05 K; TRC
Quantity Value Units Method Reference Comment
Tc506.5 ± 0.5KN/ATsonopoulos and Ambrose, 1996 
Tc507.6KN/ATeja and Anselme, 1990Uncertainty assigned by TRC = 0.4 K; TRC
Tc507.0KN/ATeja and Rosenthal, 1990Uncertainty assigned by TRC = 0.6 K; TRC
Tc506.1KN/AAmbrose and Grant, 1957Uncertainty assigned by TRC = 0.15 K; TRC
Quantity Value Units Method Reference Comment
Pc47.4 ± 0.5atmN/ATsonopoulos and Ambrose, 1996 
Pc47.39atmN/ATeja and Rosenthal, 1990Uncertainty assigned by TRC = 0.30 atm; TRC
Quantity Value Units Method Reference Comment
Vc0.245l/molN/ATsonopoulos and Ambrose, 1996 
Quantity Value Units Method Reference Comment
ρc4.08 ± 0.05mol/lN/ATsonopoulos and Ambrose, 1996 
ρc4.08mol/lN/ATeja and Anselme, 1990Uncertainty assigned by TRC = 0.09 mol/l; TRC
Quantity Value Units Method Reference Comment
Δvap6.780kcal/molVLister, 1941Halogenation at 27 C; ALS

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
7.15264.AStephenson and Malanowski, 1987Based on data from 249. to 318. K.; AC
5.93299.MMForziati, Camin, et al., 1950Based on data from 289. to 318. K.; AC
6.79300.N/ALister, 1941Based on data from 230. to 293. K.; AC

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
0.803138.1Domalski and Hearing, 1996AC

Entropy of fusion

ΔfusS (cal/mol*K) Temperature (K) Reference Comment
1.3287.07Domalski and Hearing, 1996CAL
5.813138.1

Enthalpy of phase transition

ΔHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.114687.07crystaline, IIcrystaline, IHuffman, Eaton, et al., 1948, 2DH
0.80387138.13crystaline, IliquidHuffman, Eaton, et al., 1948, 2DH

Entropy of phase transition

ΔStrs (cal/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
2.2787.07crystaline, IIcrystaline, IHuffman, Eaton, et al., 1948, 2DH
5.820138.13crystaline, IliquidHuffman, Eaton, et al., 1948, 2DH

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:


Gas phase ion energetics data

Go To: Top, Phase change data, References, Notes

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

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C5H8+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)9.01 ± 0.01eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)183.2kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity175.4kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
9.18PEKimura, Katsumata, et al., 1981LLK
9.1EIHarris, McKinnon, et al., 1979LLK
9.01 ± 0.02PEBieri, Burger, et al., 1977LLK
9.00EILossing and Traeger, 1975LLK
9.02 ± 0.01PERang, Paldoia, et al., 1974LLK
9.00EIHolmes, 1974LLK
9.01 ± 0.01PEPraet and Delwiche, 1970RDSH
9.02 ± 0.01PIDemeo and El-Sayed, 1970RDSH
9.01PEBischof and Heilbronner, 1970RDSH
9.00PEDewar and Worley, 1969RDSH
9.01 ± 0.01PIWatanabe, Nakayama, et al., 1962RDSH
9.20PEWiberg, Ellison, et al., 1976Vertical value; LLK
9.01 ± 0.03PEHeilbronner, Hoshi, et al., 1976Vertical value; LLK
9.17PEBertoti, Cradock, et al., 1976Vertical value; LLK
9.12PEHentrich, Gunkel, et al., 1974Vertical value; LLK
9.18PEClary, Lewis, et al., 1974Vertical value; LLK
9.20PEBatich, Heilbronner, et al., 1974Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C4H5+11.83CH3EIHolmes, 1974LLK
C5H7+9.00HEILossing and Traeger, 1975, 2LLK
C5H7+10.98HEILossing and Traeger, 1975LLK
C5H7+10.98HEIHolmes, 1974LLK
C5H7+11.19HEIPignataro, Cassuto, et al., 1967RDSH

References

Go To: Top, Phase change data, Gas phase ion energetics data, Notes

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

Huffman, Eaton, et al., 1948
Huffman, H.M.; Eaton, M.; Oliver, G.D., The heat capacities, heats of transition, heats of fusion and entropies of cyclopentene and cyclohexene, J. Am. Chem. Soc., 1948, 70, 2911. [all data]

Tsonopoulos and Ambrose, 1996
Tsonopoulos, C.; Ambrose, D., Vapor-Liquid Critical Properties of Elements and Compounds. 6. Unsaturated Aliphatic Hydrocarbons, J. Chem. Eng. Data, 1996, 41, 645-656. [all data]

Teja and Anselme, 1990
Teja, A.S.; Anselme, M.J., The critical properties of thermally stable and unstable fluids. II. 1986 results, AIChE Symp. Ser., 1990, 86, 279, 122-7. [all data]

Teja and Rosenthal, 1990
Teja, A.S.; Rosenthal, D.J., The Critical Pressures and Temperatures of Twelve Substances Using A Low Residence Time Flow Apparatus, AIChE Symp. Ser., 1990, 86, 279, 133-7. [all data]

Ambrose and Grant, 1957
Ambrose, D.; Grant, D.G., The Critical Temperatures of Some Hydrocarbons and Pyridine Bases, Trans. Faraday Soc., 1957, 53, 771. [all data]

Lister, 1941
Lister, M.W., Heats of organic reactions. X. Heats of bromination of cyclic olefins, J. Am. Chem. Soc., 1941, 63, 143-149. [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]

Forziati, Camin, et al., 1950
Forziati, A.F.; Camin, D.L.; Rossini, F.D., Density, refractive index, boiling point, and vapor pressure of eight monoolefin (1-alkene), six pentadiene, and two cyclomonoolefin hydrocarbons, J. RES. NATL. BUR. STAN., 1950, 45, 5, 406, https://doi.org/10.6028/jres.045.044 . [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]

Huffman, Eaton, et al., 1948, 2
Huffman, H.M.; Eaton, M.; Oliver, G.D., The heat capacities, heats of transition, heats of fusion and entropies of cyclopentene and cyclohexene, J. Am. Chem. Soc., 1948, 70, 2911-2914. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S., Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [all data]

Harris, McKinnon, et al., 1979
Harris, D.; McKinnon, S.; Boyd, R.K., The origins of the base peak in the electron impact spectrum of limonene, Org. Mass Spectrom., 1979, 14, 265. [all data]

Bieri, Burger, et al., 1977
Bieri, G.; Burger, F.; Heilbronner, E.; Maier, J.P., Valence ionization enrgies of hydrocarbons, Helv. Chim. Acta, 1977, 60, 2213. [all data]

Lossing and Traeger, 1975
Lossing, F.P.; Traeger, J.C., Stabilization in cyclopentadienyl, cyclopentenyl, and cyclopentyl cations, J. Am. Chem. Soc., 1975, 97, 1579. [all data]

Rang, Paldoia, et al., 1974
Rang, S.; Paldoia, P.; Talvari, A., Ionization potentials of unsaturated hydrocarbons. 2. Mono-substituted cyclopentenes and cyclohexenes, Eesti. NSV Tead. Akad. Toim., 1974, 354. [all data]

Holmes, 1974
Holmes, J.L., The mass spectra of isomeric hydrocarbons - II: The C5H8 isomers, spiropentane, cyclopentene, 1,3-pentadiene and isoprene; the mechanisms and energetics of their fragmentations, Org. Mass Spectrom., 1974, 8, 247. [all data]

Praet and Delwiche, 1970
Praet, M.-T.; Delwiche, J., Ionization energies of some cyclic molecules, Chem. Phys. Lett., 1970, 5, 546. [all data]

Demeo and El-Sayed, 1970
Demeo, D.A.; El-Sayed, M.A., Ionization potential and structure of olefins, J. Chem. Phys., 1970, 52, 2622. [all data]

Bischof and Heilbronner, 1970
Bischof, P.; Heilbronner, E., Photoelektron-Spektren von Cycloalkenen und Cycloalkadienen, Helv. Chim. Acta, 1970, 53, 1677. [all data]

Dewar and Worley, 1969
Dewar, M.J.S.; Worley, S.D., Photoelectron spectra of molecules. I. Ionization potentials of some organic molecules and their interpretation, J. Chem. Phys., 1969, 50, 654. [all data]

Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J., Ionization potentials of some molecules, J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]

Wiberg, Ellison, et al., 1976
Wiberg, K.B.; Ellison, G.B.; Wendoloski, J.J.; Brundle, C.R.; Kuebler, N.A., Electronic states of organic molecules. 3. Photoelectron spectra of cycloalkenes and methylenecycloalkanes, J. Am. Chem. Soc., 1976, 98, 7179. [all data]

Heilbronner, Hoshi, et al., 1976
Heilbronner, E.; Hoshi, T.; von Rosenberg, J.L.; Hafner, K., Alkyl-induced, natural hypsochromic shifts of the 2A←2X and 2B←2X transitions of azulene and naphthalene radical cations, Nouv. J. Chim., 1976, 1, 105. [all data]

Bertoti, Cradock, et al., 1976
Bertoti, I.; Cradock, S.; Ebsworth, E.A.V.; Whiteford, R.A., Photoelectron spectra and transannular interactions in 1-silacyclopent-3-enes, J. Chem. Soc. Dalton Trans., 1976, 937. [all data]

Hentrich, Gunkel, et al., 1974
Hentrich, G.; Gunkel, E.; Klessinger, M., Photoelektronenspektren organischer verbindungen. 4. Photoelektronenspektren ungesattigter carbonylverbindungen, J. Mol. Struct., 1974, 21, 231. [all data]

Clary, Lewis, et al., 1974
Clary, D.C.; Lewis, A.A.; Morland, D.; Murrell, J.N.; Heilbronner, E., Ionization potentials of cycloalkenes, J. Chem. Soc. Faraday Trans. 2, 1974, 70, 1889. [all data]

Batich, Heilbronner, et al., 1974
Batich, C.; Heilbronner, E.; Rommel, E.; Semmelhack, M.F.; Foos, J.S., Equivalence of the energy gaps {DELTA}I(1,2) and {DELTA}E(1,2) between corresponding bands in the photoelectron (I) and electronic absorption (E) spectra of spiro[4.4]nonatetraene. An amusing consequence of spiroconjugation, J. Am. Chem. Soc., 1974, 96, 7662. [all data]

Lossing and Traeger, 1975, 2
Lossing, F.P.; Traeger, J.C., Free radicals by mass spectrometry XLVI. Heats of formation of C5H7 and C5H9 radicals and cations., J. Am. Chem. Soc., 1975, 19, 9. [all data]

Pignataro, Cassuto, et al., 1967
Pignataro, S.; Cassuto, A.; Lossing, F.P., Free radicals by mass spectrometry. XXXVI. Ionization potentials of conjugated and nonconjugated radicals, J. Am. Chem. Soc., 1967, 89, 3693. [all data]


Notes

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