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Ethane, hexafluoro-

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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-321.200kcal/molReviewChase, 1998Data last reviewed in June, 1969
Deltafgas-321.2 ± 1.2kcal/molEqkWalker, Sinke, et al., 1970ALS
Deltafgas-318.kcal/molEqkCoomber and Whittle, 1967ALS
Deltafgas-318. ± 2.kcal/molCcbSinke, 1966ALS
Deltafgas-321.22 ± 0.96kcal/molCmKirkbride and Davidson, 1954Reanalyzed by Kolesov and Papina, 1983, Original value = -303. ± 2. kcal/mol; Von Wartenberg method; ALS
Quantity Value Units Method Reference Comment
gas,1 bar79.371cal/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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 1400.1400. - 6000.
A 16.6700042.29259
B 53.862310.244591
C -41.62591-0.046148
D 11.268300.002604
E -0.347915-2.671979
F -329.3929-341.5901
G 83.28021118.6850
H -321.2000-321.2000
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
liquid59.880cal/mol*KN/APace and Aston, 1948 

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
31.38195.Pace and Aston, 1948T = 12 to 195 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 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

3Ethane, hexafluoro- + 2Nitrogen trifluoride = 6Tetrafluoromethane + Nitrogen

By formula: 3C2F6 + 2F3N = 6CF4 + N2

Quantity Value Units Method Reference Comment
Deltar-311.7 ± 3.0kcal/molCcbSinke, 1966gas phase

Cyanogen + Ethane, hexafluoro- = 2Acetonitrile, trifluoro-

By formula: C2N2 + C2F6 = 2C2F3N

Quantity Value Units Method Reference Comment
Deltar10.54 ± 0.14kcal/molEqkWalker, Sinke, et al., 1970gas phase

Ethane, hexafluoro- + Bromine = 2Bromotrifluoromethane

By formula: C2F6 + Br2 = 2CBrF3

Quantity Value Units Method Reference Comment
Deltar3.66 ± 0.14kcal/molEqkCoomber and Whittle, 1967gas phase

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]

Walker, Sinke, et al., 1970
Walker, L.C.; Sinke, G.C.; Perettie, D.J.; Janz, G.J., Enthalpy of formation of trifluoroacetonitrile, J. Am. Chem. Soc., 1970, 92, 4525-4526. [all data]

Coomber and Whittle, 1967
Coomber, J.W.; Whittle, E., Bond dissociation energies from equilibrium studies. Part 2.-D(CF3-CF3) and enthalpy of formation of C2F6, Trans. Faraday Soc., 1967, 63, 1394-1401. [all data]

Sinke, 1966
Sinke, G.C., The heat of reaction of nitrogen trifluoride and hexafluoroethane, J. Phys. Chem., 1966, 70, 1326-1327. [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]

Kolesov and Papina, 1983
Kolesov, V.P.; Papina, T.S., Thermochemistry of Haloethanes, Russ. Chem. Rev., 1983, 52, 425. [all data]

Pace and Aston, 1948
Pace, E.L.; Aston, J.G., The thermodynamics of hexafluoroethane from calorimetric and spectroscopic data, J. Am. Chem. Soc., 1948, 70, 566-570. [all data]


Notes

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