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Ethene, tetrafluoro-

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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

Quantity Value Units Method Reference Comment
Deltafgas-658.56kJ/molReviewChase, 1998Data last reviewed in June, 1969
Deltafgas-661. ± 3.kJ/molCmKolesov, Zenkov, et al., 1962Reanalyzed by Cox and Pilcher, 1970, Original value = -636. ± 3. kJ/mol; ALS
Deltafgas-661. ± 3.kJ/molChydNeugebauer and Margrave, 1956Reanalyzed by Cox and Pilcher, 1970, Original value = -635.5 ± 4.6 kJ/mol; ALS
Deltafgas-686.kJ/molCcbWartenberg and Schiefer, 1955ALS
Deltafgas-678. ± 4.kJ/molCmKirkbride and Davidson, 1954Von Wartenberg method; ALS
Quantity Value Units Method Reference Comment
gas,1 bar300.01J/mol*KReviewChase, 1998Data last reviewed in June, 1969

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 1100.1100. - 6000.
A 43.55126129.9776
B 175.90791.690918
C -138.7331-0.340087
D 40.356190.023448
E -0.381260-10.83204
F -679.4983-725.3048
G 303.9350417.1829
H -658.5616-658.5616
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in June, 1969 Data last reviewed in June, 1969

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Reaction 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: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
liquid184.23J/mol*KN/AFurukawa, McCoskey, et al., 1953 

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
112.77200.Furukawa, McCoskey, et al., 1953T = 6 to 210 K.

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 as indicated in comments:
B - John E. Bartmess
MS - José A. Martinho Simões
ALS - 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

Chlorine anion + Ethene, tetrafluoro- = C2ClF4-

By formula: Cl- + C2F4 = C2ClF4-

Quantity Value Units Method Reference Comment
Deltar>41.84kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; Entropy estimated. The experimental HOF of C2F4 has been quiestioned as being too positive: Curtiss, Raghavachari, et al., 7374, 11CHA/DEN; B
Quantity Value Units Method Reference Comment
Deltar10.7kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; Entropy estimated. The experimental HOF of C2F4 has been quiestioned as being too positive: Curtiss, Raghavachari, et al., 7374, 11CHA/DEN; B

Bromine anion + Ethene, tetrafluoro- = C2BrF4-

By formula: Br- + C2F4 = C2BrF4-

Quantity Value Units Method Reference Comment
Deltar29.7 ± 2.1kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; The experimental HOF of C2F4 has been questioned as being too positive: Curtiss, Raghavachari, et al., 7374, 11CHA/DEN; B
Quantity Value Units Method Reference Comment
Deltar9.7 ± 2.1kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; The experimental HOF of C2F4 has been questioned as being too positive: Curtiss, Raghavachari, et al., 7374, 11CHA/DEN; B

C7CrF4O5 (g) = Ethene, tetrafluoro- (g) + C5CrO5 (g)

By formula: C7CrF4O5 (g) = C2F4 (g) + C5CrO5 (g)

Quantity Value Units Method Reference Comment
Deltar82.4 ± 5.9kJ/molKinGWells, House, et al., 1994The reaction enthalpy relies on the measured activation energy and on the assumption of a negligible barrier for product recombination Wells, House, et al., 1994.; MS

C2ClF4- + 2Ethene, tetrafluoro- = C4ClF8-

By formula: C2ClF4- + 2C2F4 = C4ClF8-

Quantity Value Units Method Reference Comment
Deltar27.6 ± 2.1kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; B
Quantity Value Units Method Reference Comment
Deltar7.7 ± 2.1kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; B

C4ClF8- + 3Ethene, tetrafluoro- = C6ClF12-

By formula: C4ClF8- + 3C2F4 = C6ClF12-

Quantity Value Units Method Reference Comment
Deltar26.4 ± 2.1kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; B
Quantity Value Units Method Reference Comment
Deltar2.7 ± 2.1kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; B

C6ClF12- + 4Ethene, tetrafluoro- = C8ClF16-

By formula: C6ClF12- + 4C2F4 = C8ClF16-

Quantity Value Units Method Reference Comment
Deltar25.1 ± 2.1kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; B
Quantity Value Units Method Reference Comment
Deltar0.2 ± 2.1kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; B

C2BrF4- + 2Ethene, tetrafluoro- = C4BrF8-

By formula: C2BrF4- + 2C2F4 = C4BrF8-

Quantity Value Units Method Reference Comment
Deltar25.1 ± 2.1kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; B
Quantity Value Units Method Reference Comment
Deltar3.9 ± 2.1kJ/molTDAsHiraoka, Mochizuki, et al., 2008gas phase; B

Hydrogen bromide + Ethene, tetrafluoro- = 1-Bromo-1,1,2,2-tetrafluoroethane

By formula: HBr + C2F4 = C2HBrF4

Quantity Value Units Method Reference Comment
Deltar-137.75 ± 0.75kJ/molCmLacher, Lea, et al., 1950gas phase; Heat of hydrobromination at 367°K; ALS

1,2-Diiodotetrafluoroethane = Ethene, tetrafluoro- + Iodine

By formula: C2F4I2 = C2F4 + I2

Quantity Value Units Method Reference Comment
Deltar69. ± 2.kJ/molEqkWu, Pickard, et al., 1975gas phase; Spectrophotometery at 298.15°K; ALS

Ethene, tetrafluoro- + Chlorine = Ethane, 1,2-dichloro-1,1,2,2-tetrafluoro-

By formula: C2F4 + Cl2 = C2Cl2F4

Quantity Value Units Method Reference Comment
Deltar-239.84 ± 0.84kJ/molCmLacher, McKinley, et al., 1949gas phase; Chlorination at 90 C; ALS

Ethene, tetrafluoro- + 2Hydrogen = 2carbon + 4hydrogen fluoride

By formula: C2F4 + 2H2 = 2C + 4HF

Quantity Value Units Method Reference Comment
Deltar-618.4 ± 4.6kJ/molChydNeugebauer and Margrave, 1956gas phase; ALS

Ethene, tetrafluoro- + Bromine = 1,2-Dibromotetrafluoroethane

By formula: C2F4 + Br2 = C2Br2F4

Quantity Value Units Method Reference Comment
Deltar-161.0kJ/molCmLacher, Casali, et al., 1956gas phase; Heat of bromination; ALS

Ethene, tetrafluoro- + 4sodium = 4sodium fluoride + 2Carbon

By formula: C2F4 + 4Na = 4FNa + 2C

Quantity Value Units Method Reference Comment
Deltar-1611. ± 4.6kJ/molCmKolesov, Zenkov, et al., 1962gas phase; ALS

2Difluorochloromethane = Ethene, tetrafluoro- + 2Hydrogen chloride

By formula: 2CHClF2 = C2F4 + 2HCl

Quantity Value Units Method Reference Comment
Deltar121.6kJ/molKinEdwards and Small, 1965gas phase; Corrected for CODATA value of «DELTA»fH; ALS

2Ethene, tetrafluoro- = Cyclobutane, octafluoro-

By formula: 2C2F4 = C4F8

Quantity Value Units Method Reference Comment
Deltar-210.kJ/molEqkAtkinson and Trenwith, 1953gas phase; At 527-800 °K; ALS

Ethene, tetrafluoro- + 2fluorine = 2Tetrafluoromethane

By formula: C2F4 + 2F2 = 2CF4

Quantity Value Units Method Reference Comment
Deltar-1037.3kJ/molCcbDomalski and Armstrong, 1967solid phase; ALS

1,2-Dibromotetrafluoroethane = Ethene, tetrafluoro- + Bromine

By formula: C2Br2F4 = C2F4 + Br2

Quantity Value Units Method Reference Comment
Deltar160.99kJ/molCmLacher, Casali, et al., 1956gas phase; ALS

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.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Kolesov, Zenkov, et al., 1962
Kolesov, V.P.; Zenkov, I.D.; Skuratov, S.M., The standard enthalpy of formation of tetrafluoroethylene, Russ. J. Phys. Chem. (Engl. Transl.), 1962, 36, 45-47. [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]

Neugebauer and Margrave, 1956
Neugebauer, C.A.; Margrave, J.L., The heats of formation of tetrafluoroethylene, tetrafluoromethane and 1,1-difluoroethylene, J. Phys. Chem., 1956, 60, 1318-1321. [all data]

Wartenberg and Schiefer, 1955
Wartenberg, H.V.; Schiefer, J., Bildungswarmen von fluor-chlor-kohlenstoff-verbindungen, Z. Anorg. Chem., 1955, 278, 326-332. [all data]

Kirkbride and Davidson, 1954
Kirkbride, F.W.; Davidson, F.G., Heats of formation of gaseous fluoro- and fluorochloro-carbons, Nature (London), 1954, 174, 79-80. [all data]

Furukawa, McCoskey, et al., 1953
Furukawa, G.T.; McCoskey, R.E.; Reilly, M.L., Heat capacity, heats of fusion and vaporization, and vapor pressure of tetrafluoroethylene, J. Res., 1953, NBS 51, 69-72. [all data]

Hiraoka, Mochizuki, et al., 2008
Hiraoka, K.; Mochizuki, N.; Wada, A.; Okada, H.; Ichikawa, T.; Asakawa, D.; Yazawa, I., Gas-phase ion/molecule reactions in C2F4, Int. J. Mass Spectrom., 2008, 272, 1, 22-28, https://doi.org/10.1016/j.ijms.2007.12.013 . [all data]

Curtiss, Raghavachari, et al., 7374
Curtiss, L.A.; Raghavachari, K.; Redfern, P.C.; Pople, J.A., Assesment of Gaussian-3 and density Functional Theories for a larger experimental test set, J. Chem. Phys. 112 (2000), 7374. [all data]

Wells, House, et al., 1994
Wells, J.R.; House, P.G.; Weitz, E., J. Phys. Chem., 1994, 98, 8343. [all data]

Lacher, Lea, et al., 1950
Lacher, J.R.; Lea, K.R.; Walden, C.H.; Olson, G.G.; Park, J.D., Reaction heats of organic fluorine compounds. III. The vapor phase heats of hydrobromination of some simple fluoroolefins, J. Am. Chem. Soc., 1950, 72, 3231-3234. [all data]

Wu, Pickard, et al., 1975
Wu, E.C.; Pickard, J.M.; Rodgers, A.S., Thermochemistry of the gas-phase reaction tetrafluoroethylene + iodine = 1,2-diiodoperfluoroethane. Heat of formation of 1,2-diiodoperfluoroethane and of iodoperfluoroethane, J. Phys. Chem., 1975, 79, 1078-1081. [all data]

Lacher, McKinley, et al., 1949
Lacher, J.R.; McKinley, J.J.; Snow, C.M.; Michel, L.; Nelson, G.; Park, J.D., Reaction heats of organic fluorine compounds. I. Apparatus and the heat of chlorination of tetrafluoroethylene, J. Am. Chem. Soc., 1949, 71, 1330-1334. [all data]

Lacher, Casali, et al., 1956
Lacher, J.R.; Casali, L.; Park, J.D., Reaction heats of organic halogen compounds V. The vapor phase bromination of tetrafluoroethylene and trifluorochloroethylene, J. Phys. Chem., 1956, 60, 608-610. [all data]

Edwards and Small, 1965
Edwards, J.W.; Small, P.A., Kinetics of the pyrolysis of chlorodifluoromethane, Ind. Eng. Chem. Fundam., 1965, 4, 396-400. [all data]

Atkinson and Trenwith, 1953
Atkinson, B.; Trenwith, A.B., 424. The thermal decomposition of tetrafluorethylene, J. Chem. Soc. London, 1953, 2082-2087. [all data]

Domalski and Armstrong, 1967
Domalski, E.S.; Armstrong, G.T., The heats of combustion of polytetrafluoroethylene (teflon) and graphite in elemental fluorine, J. Res. NBS, 1967, 71, 105-118. [all data]


Notes

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