1,3-Cyclopentadiene

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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
Δfgas33.2kcal/molChydRoth, Adamczak, et al., 1991ALS
Δfgas31.89kcal/molEqkFuruyama, Golden, et al., 1970ALS
Quantity Value Units Method Reference Comment
Δcgas-707. ± 7.kcal/molCcbWassermann, 1935Corresponding Δfgas = 32. kcal/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
gas65.600cal/mol*KN/AFuruyama S., 1970This a second law entropy value was obtained from study of gas-phase equilibrium. The value of S(298.2 K)=270.3(4.2) J/mol*K was obtained from other equilibrium study [ Grant C.J., 1969].; GT

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
7.95750.Dorofeeva O.V., 1986Recommended S(T) values differ from other statistically calculated values [ Turnbull A.G., 1967, Furuyama S., 1970] up to 2.6 J/mol*K. Discrepancies in Cp(T) values amount to 1.3-4.3 J/mol*K. There is an excellent agreement between selected values of S(T) and Cp(T) and those obtained by ab initio calculation [ Karni M., 1991].; GT
8.375100.
9.637150.
11.84200.
16.32273.15
18.01 ± 0.48298.15
18.14300.
24.689400.
30.222500.
34.663600.
38.250700.
41.207800.
43.683900.
45.7821000.
47.5721100.
49.1091200.
50.4301300.
51.5701400.
52.5621500.

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 as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
MS - José A. Martinho Simões

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

cyclopentadienide anion + Hydrogen cation = 1,3-Cyclopentadiene

By formula: C5H5- + H+ = C5H6

Quantity Value Units Method Reference Comment
Δr353.9 ± 2.2kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Δr354.9 ± 2.9kcal/molG+TSCumming and Kebarle, 1978gas phase; B
Δr357.2 ± 2.0kcal/molD-EAEngelking and Lineberger, 1977gas phase; B
Quantity Value Units Method Reference Comment
Δr347.7 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Δr348.7 ± 2.0kcal/molIMRECumming and Kebarle, 1978gas phase; B

cyclopentadienide anion + 1,3-Cyclopentadiene = (cyclopentadienide anion • 1,3-Cyclopentadiene)

By formula: C5H5- + C5H6 = (C5H5- • C5H6)

Quantity Value Units Method Reference Comment
Δr<8.60kcal/molIMRBMeot-ner, 1988gas phase; B,M
Quantity Value Units Method Reference Comment
Δr20.cal/mol*KN/AMeot-ner, 1988gas phase; Entropy change calculated or estimated, DG<, ΔrH<; M
Quantity Value Units Method Reference Comment
Δr<2.6 ± 1.0kcal/molIMRBMeot-ner, 1988gas phase; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
3.6250.PHPMSMeot-ner, 1988gas phase; Entropy change calculated or estimated, DG<, ΔrH<; M

Maleic anhydride + 1,3-Cyclopentadiene = Carbic anhydride

By formula: C4H2O3 + C5H6 = C9H8O3

Quantity Value Units Method Reference Comment
Δr-24.8 ± 0.5kcal/molCmBreslauer and Kabakoff, 1974liquid phase; solvent: Dioxane; ALS
Δr-25.78kcal/molCmRogers and Quan, 1973liquid phase; Gas phase Diels-Alder; ALS

2Hydrogen + 1,3-Cyclopentadiene = Cyclopentane

By formula: 2H2 + C5H6 = C5H10

Quantity Value Units Method Reference Comment
Δr-50.38 ± 0.20kcal/molChydKistiakowsky, Ruhoff, et al., 1936gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -50.87 ± 0.20 kcal/mol; At 355 °K; ALS

Chlorine anion + 1,3-Cyclopentadiene = (Chlorine anion • 1,3-Cyclopentadiene)

By formula: Cl- + C5H6 = (Cl- • C5H6)

Quantity Value Units Method Reference Comment
Δr<2.50kcal/molTDEqFrench, Ikuta, et al., 1982gas phase; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
2.5300.PHPMSFrench, Ikuta, et al., 1982gas phase; DG<; M

1,3-Cyclopentadiene + Tetracyanoethylene = Bicyclo[2.2.1]hept-5-ene-2,2,3,3-tetracarbonitrile

By formula: C5H6 + C6N4 = C11H6N4

Quantity Value Units Method Reference Comment
Δr-26.8kcal/molKinSamuilov, Bukharov, et al., 1981liquid phase; solvent: Chorobenzene; ALS
Δr-25.56 ± 0.70kcal/molCmRogers, 1972liquid phase; ALS

2,5-Norbornadiene = 1,3-Cyclopentadiene + Acetylene

By formula: C7H8 = C5H6 + C2H2

Quantity Value Units Method Reference Comment
Δr28.00 ± 0.50kcal/molKinWalsh and Wells, 1975gas phase; Reanalyzed by Pedley, Naylor, et al., 1986, Original value = 28.36 ± 0.32 kcal/mol; ALS

21,3-Cyclopentadiene (l) + magnesium (cr) = Magnesium, bis(η(5)-2,4-cyclopentadien-1-yl)- (cr) + Hydrogen (g)

By formula: 2C5H6 (l) + Mg (cr) = C10H10Mg (cr) + H2 (g)

Quantity Value Units Method Reference Comment
Δr-34.06 ± 0.69kcal/molRSCHull, Reid, et al., 1967Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970, 2.; MS

C8H6MoO3 (solution) + 31,3-Diazine (solution) = C18H15MoN3O3 (solution) + 1,3-Cyclopentadiene (solution)

By formula: C8H6MoO3 (solution) + 3C4H4N2 (solution) = C18H15MoN3O3 (solution) + C5H6 (solution)

Quantity Value Units Method Reference Comment
Δr-16.7 ± 0.69kcal/molRSCNolan, Hoff, et al., 1985solvent: Pyridine; Reaction temperature: 323 K; MS

Bicyclo[2.1.0]pent-2-ene = 1,3-Cyclopentadiene

By formula: C5H6 = C5H6

Quantity Value Units Method Reference Comment
Δr-47.8 ± 0.5kcal/molCisoRoth, Klarner, et al., 1980liquid phase; solvent: Heptane; ALS

Dicyclopentadiene = 21,3-Cyclopentadiene

By formula: C10H12 = 2C5H6

Quantity Value Units Method Reference Comment
Δr17.300kcal/molCmBaur and Frater, 1941gas phase; Heat of dissociation; ALS

2Hydrogen iodide + 1,3-Cyclopentadiene = Cyclopentene + Iodine

By formula: 2HI + C5H6 = C5H8 + I2

Quantity Value Units Method Reference Comment
Δr-21.4kcal/molEqkFuruyama, Golden, et al., 1970gas phase; ALS

2-Norbornene = 1,3-Cyclopentadiene + Ethylene

By formula: C7H10 = C5H6 + C2H4

Quantity Value Units Method Reference Comment
Δr23.2 ± 0.60kcal/molEqkWalsh and Wells, 1976gas phase; ALS

Bicyclo[2.2.1]hept-5-ene-2,2,3,3-tetracarbonitrile = 1,3-Cyclopentadiene + Tetracyanoethylene

By formula: C11H6N4 = C5H6 + C6N4

Quantity Value Units Method Reference Comment
Δr25.56 ± 0.70kcal/molCmRogers, 1972solid phase; ALS

1,3-Cyclopentadiene + Acetylene = 2,5-Norbornadiene

By formula: C5H6 + C2H2 = C7H8

Quantity Value Units Method Reference Comment
Δr-28.0 ± 0.5kcal/molEqkWalsh and Wells, 1975gas phase; ALS

21,3-Cyclopentadiene = endo-Dicyclopentadiene

By formula: 2C5H6 = C10H12

Quantity Value Units Method Reference Comment
Δr-46.62kcal/molEqkLenz and Vaughan, 1989gas phase; ALS

21,3-Cyclopentadiene = C10H12

By formula: 2C5H6 = C10H12

Quantity Value Units Method Reference Comment
Δr-46.77kcal/molEqkLenz and Vaughan, 1989gas phase; ALS

Gas phase ion energetics 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
MM - Michael M. Meot-Ner (Mautner)
LL - Sharon G. Lias and Joel F. Liebman
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 C5H6+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)8.57 ± 0.01eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)196.4kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity190.8kcal/molN/AHunter and Lias, 1998HL

Proton affinity at 298K

Proton affinity (kcal/mol) Reference Comment
197.9Aue, Guidoni, et al., 2000Experimental literature data re-evaluated by the authors using ab initio protonation entropies; MM

Gas basicity at 298K

Gas basicity (review) (kcal/mol) Reference Comment
190.8Aue, Guidoni, et al., 2000Experimental literature data re-evaluated by the authors using ab initio protonation entropies; MM

Ionization energy determinations

IE (eV) Method Reference Comment
8.44PEKiselev, Sakhabutdinov, et al., 1992LL
8.58 ± 0.02PEBieri, Burger, et al., 1977LLK
8.56 ± 0.01EIHolmes and McGillivray, 1971LLK
8.57 ± 0.01PIDerrick, Asbrink, et al., 1971LLK
8.57 ± 0.01PIDemeo and El-Sayed, 1970RDSH
9.0EIHedaya, Kent, et al., 1968RDSH
8.55PIDewar and Worley, 1968RDSH
8.53PEKiselev, Sakhabutdinov, et al., 1992Vertical value; LL
8.61PEBock and Kaim, 1980Vertical value; LLK
8.6PECradock, Ebsworth, et al., 1975Vertical value; LLK
8.56PECradock, Findlay, et al., 1974Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C5H5+12.62HEIOccolowitz and White, 1968RDSH
C5H5+12.9HEIHarrison, Haynes, et al., 1965RDSH
C5H5+11.9 ± 0.5HEIDorman, 1965RDSH
C5H5+12.6HEIHarrison, Honnen, et al., 1960RDSH

De-protonation reactions

cyclopentadienide anion + Hydrogen cation = 1,3-Cyclopentadiene

By formula: C5H5- + H+ = C5H6

Quantity Value Units Method Reference Comment
Δr353.9 ± 2.2kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Δr354.9 ± 2.9kcal/molG+TSCumming and Kebarle, 1978gas phase; B
Δr357.2 ± 2.0kcal/molD-EAEngelking and Lineberger, 1977gas phase; B
Quantity Value Units Method Reference Comment
Δr347.7 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Δr348.7 ± 2.0kcal/molIMRECumming and Kebarle, 1978gas phase; B

Ion clustering 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

cyclopentadienide anion + 1,3-Cyclopentadiene = (cyclopentadienide anion • 1,3-Cyclopentadiene)

By formula: C5H5- + C5H6 = (C5H5- • C5H6)

Quantity Value Units Method Reference Comment
Δr<8.60kcal/molIMRBMeot-ner, 1988gas phase; B,M
Quantity Value Units Method Reference Comment
Δr20.cal/mol*KN/AMeot-ner, 1988gas phase; Entropy change calculated or estimated, DG<, ΔrH<; M
Quantity Value Units Method Reference Comment
Δr<2.6 ± 1.0kcal/molIMRBMeot-ner, 1988gas phase; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
3.6250.PHPMSMeot-ner, 1988gas phase; Entropy change calculated or estimated, DG<, ΔrH<; M

Chlorine anion + 1,3-Cyclopentadiene = (Chlorine anion • 1,3-Cyclopentadiene)

By formula: Cl- + C5H6 = (Cl- • C5H6)

Quantity Value Units Method Reference Comment
Δr<2.50kcal/molTDEqFrench, Ikuta, et al., 1982gas phase; B

Free energy of reaction

ΔrG° (kcal/mol) T (K) Method Reference Comment
2.5300.PHPMSFrench, Ikuta, et al., 1982gas phase; DG<; M

Gas Chromatography

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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

Kovats' RI, non-polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
CapillaryOV-101100.545.Diez, Guillen, et al., 1990N2; Column length: 25. m; Column diameter: 0.23 mm
CapillaryOV-10180.542.Diez, Guillen, et al., 1990N2; Column length: 25. m; Column diameter: 0.23 mm
CapillarySqualane100.534.7Diez, Guillen, et al., 1990N2; Column length: 45. m; Column diameter: 0.5 mm
CapillarySqualane80.510.5Diez, Guillen, et al., 1990N2; Column length: 45. m; Column diameter: 0.5 mm
CapillarySE-54100.552.5Diez, Guillen, et al., 1990N2; Column length: 25. m; Column diameter: 0.22 mm
CapillarySE-5480.549.5Diez, Guillen, et al., 1990N2; Column length: 25. m; Column diameter: 0.22 mm
PackedSqualane70.527.Safina, Poznyak, et al., 1989He, Risorb (0.2-0.3 mm); Column length: 2. m
CapillarySqualane50.521.7Papazova, Milina, et al., 1988Column length: 50. m; Column diameter: 0.25 mm
CapillaryBP-1100.543.Bermejo, Blanco, et al., 1987N2; Column length: 12. m; Column diameter: 0.22 mm
CapillaryBP-180.541.Bermejo, Blanco, et al., 1987N2; Column length: 12. m; Column diameter: 0.22 mm
CapillaryOV-101100.545.Bermejo, Blanco, et al., 1987N2; Column length: 25. m; Column diameter: 0.23 mm
CapillaryOV-10180.542.Bermejo, Blanco, et al., 1987N2; Column length: 25. m; Column diameter: 0.23 mm
CapillarySqualane64.523.Sojak, Ruman, et al., 198750. m/0.25 mm/0.25 μm, H2
CapillarySE-30130.546.Bredael, 1982Column length: 100. m; Column diameter: 0.5 mm
CapillarySE-3080.540.Bredael, 1982Column length: 100. m; Column diameter: 0.5 mm
CapillarySqualane50.521.8Bajus, Veselý, et al., 1979Column length: 100. m; Column diameter: 0.25 mm
CapillarySqualane50.521.6Bajus, Veselý, et al., 1979, 2Column length: 100. m; Column diameter: 0.25 mm
PackedSqualane27.518.Bogoslovsky, Anvaer, et al., 1978 
PackedSqualane49.521.Bogoslovsky, Anvaer, et al., 1978 
PackedSqualane67.527.Bogoslovsky, Anvaer, et al., 1978 
PackedSqualane86.530.Bogoslovsky, Anvaer, et al., 1978 
CapillarySqualane40.520.6Stopp, Engewald, et al., 1978Column length: 70. m; Column diameter: 0.23 mm
CapillarySqualane27.516.61Schomburg and Dielmann, 1973Column length: 100. m; Column diameter: 0.25 mm
PackedSqualane27.519.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm
PackedSqualane49.522.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm
PackedSqualane67.528.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm
PackedSqualane86.530.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm

Kovats' RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryPetrocol DH-100538.1Haagen-Smit Laboratory, 1997He; Column length: 100. m; Column diameter: 0.2 mm; Program: 5C(10min) => 5C/min => 50C(48min) => 1.5C/min => 195C(91min)
CapillaryDB-1533.Hoekman, 199360. m/0.32 mm/1.0 μm, He; Program: -40 C for 12 min; -40 - 125 C at 3 deg.min; 125-185 C at 6 deg/min; 185 - 220 C at 20 deg/min; hold 220 C for 2 min

Kovats' RI, polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
CapillaryCarbowax 20M64.745.7Sojak, Ruman, et al., 198750. m/0.25 mm/0.25 μm, H2

Kovats' RI, polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryDB-Wax735.Umano and Shibamoto, 1987He, 40. C @ 10. min, 2. K/min; Column length: 60. m; Column diameter: 0.25 mm; Tend: 200. C

Normal alkane RI, non-polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
CapillaryMethyl Silicone50.522.N/AN2; Column length: 74.6 m; Column diameter: 0.28 mm

Normal alkane RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryPolydimethyl siloxane: CP-Sil 5 CB528.Bramston-Cook, 201360. m/0.25 mm/1.0 μm, Helium, 45. C @ 1.45 min, 3.6 K/min, 210. C @ 2.72 min
CapillaryPONA525.Zhang, Ding, et al., 200950. m/0.20 mm/0.50 μm, Nitrogen, 35. C @ 15. min, 2. K/min, 200. C @ 10. min

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillarySqualane523.Chen, 2008Program: not specified
CapillaryPONA538.Perkin Elmer Instruments, 2002Column length: 100. m; Phase thickness: 0.50 μm; Program: not specified
CapillaryOV-101530.Zenkevich, 1998He; Column length: 25. m; Column diameter: 0.20 mm; Program: not specified
CapillaryOV-101535.Zenkevich, 1998He; Column length: 25. m; Column diameter: 0.20 mm; Program: not specified
CapillaryOV-1, SE-30, Methyl silicone, SP-2100, OV-101, DB-1, etc.540.Waggott and Davies, 1984Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified

Lee's RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryHP-597.2Shao, Wang, et al., 200630. m/0.3 mm/0.25 μm, He, 50. C @ 5. min, 5. K/min, 200. C @ 15. min

References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Gas Chromatography, Notes

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

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]

Furuyama, Golden, et al., 1970
Furuyama, S.; Golden, D.M.; Benson, S.W., Thermochemistry of cyclopentene and cyclopentadiene from studies of gas-phase equilibria, J. Chem. Thermodyn., 1970, 2, 161-169. [all data]

Wassermann, 1935
Wassermann, A., The mechanism of additions to double bonds. Part I. Thermochemistry and kinetics of a diene synthesis, J. Chem. Soc., 1935, 828-838. [all data]

Furuyama S., 1970
Furuyama S., Thermochemistry of cyclopentene and cyclopentadiene from studies of gas-phase equilibria, J. Chem. Thermodyn., 1970, 2, 161-169. [all data]

Grant C.J., 1969
Grant C.J., Reversibility in the gas-phase decomposition of cyclopentene. The entropy of cyclopentadiene, J. Chem. Soc. Chem. Comm., 1969, 667-668. [all data]

Dorofeeva O.V., 1986
Dorofeeva O.V., Thermodynamic properties of twenty-one monocyclic hydrocarbons, J. Phys. Chem. Ref. Data, 1986, 15, 437-464. [all data]

Turnbull A.G., 1967
Turnbull A.G., Thermochemistry of biscyclopentadienyl metal compounds, Austral. J. Chem., 1967, 20, 2059-2067. [all data]

Karni M., 1991
Karni M., Ab initio calculations and ideal gas thermodynamic functions of cyclopentadiene and cyclopentadiene derivatives, J. Phys. Chem. Ref. Data, 1991, 20, 665-683. [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P., Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A), Can. J. Chem., 1978, 56, 1. [all data]

Engelking and Lineberger, 1977
Engelking, P.C.; Lineberger, W.C., Laser photoelectron spectrometry of C5H5-: A determination of the electron affinity and Jahn-Teller coupling in cyclopentadienyl, J. Chem. Phys., 1977, 67, 1412. [all data]

Meot-ner, 1988
Meot-ner, M., The Ionic Hydrogen Bond and Solvation. 7. Interaction Energies of Carbanions with Solvent Molecules, J. Am. Chem. Soc., 1988, 110, 12, 3858, https://doi.org/10.1021/ja00220a022 . [all data]

Breslauer and Kabakoff, 1974
Breslauer, K.J.; Kabakoff, D.S., Enthalpy of the Diels-Alder reaction of cyclopentadiene and maleic anhydride, J. Org. Chem., 1974, 39, 721-722. [all data]

Rogers and Quan, 1973
Rogers, F.E.; Quan, S.W., Thermochemistry of the Diels-Alder reaction. III. Heat of addition of cyclopentadience to maleic anhydride, J. Phys. Chem., 1973, 77, 828-831. [all data]

Kistiakowsky, Ruhoff, et al., 1936
Kistiakowsky, G.B.; Ruhoff, J.R.; Smith, H.A.; Vaughan, W.E., Heats of organic reactions. IV. Hydrogenation of some dienes and of benzene, J. Am. Chem. Soc., 1936, 58, 146-153. [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]

French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P., Hydrogen bonding of O-H and C-H hydrogen donors to Cl-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl- = RHCl-, Can. J. Chem., 1982, 60, 1907. [all data]

Samuilov, Bukharov, et al., 1981
Samuilov, Ya.D.; Bukharov, S.V.; Konovalov, A.I., Reactivity of tetraphenylcyclopentadiene and tetracyclone in the Diels-Alder reaction with cyanoethylenes, Zh. Org. Khim., 1981, 17, 2389-2393. [all data]

Rogers, 1972
Rogers, F.E., Thermochemistry of the Diels-Alder reactions. II. Heat of addition of several dienes to tetracyanoethylene, J. Phys. Chem., 1972, 76, 106-109. [all data]

Walsh and Wells, 1975
Walsh, R.; Wells, J.M., The enthalpy of formation of bicyclo[2,2,1]hepta-2,5-diene. Thermodynamic functions of bicyclo[2,2,1]heptane and bicyclo[2,2,1]hepta-2,5-diene, J. Chem. Thermodyn., 1975, 7, 149-154. [all data]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

Hull, Reid, et al., 1967
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Notes

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