1,2-Dibromotetrafluoroethane

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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
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil320. ± 1.KAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus161.65KN/ARuff and Bretschneider, 1933Uncertainty assigned by TRC = 0.3 K; TRC
Quantity Value Units Method Reference Comment
Ttriple162.83KN/AKosarukina, Zhogin, et al., 1982Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC
Quantity Value Units Method Reference Comment
Tc487.8KN/AMajer and Svoboda, 1985 
Quantity Value Units Method Reference Comment
Δvap28.61kJ/molN/AMajer and Svoboda, 1985 
Δvap28.5kJ/molAStephenson and Malanowski, 1987Based on data from 283. to 357. K.; AC
Δvap28.4 ± 0.1kJ/molCMajer, Svoboda, et al., 1981AC

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
27.03320.3N/AMajer and Svoboda, 1985 
26.9369.AStephenson and Malanowski, 1987Based on data from 354. to 443. K.; AC
27.1455.AStephenson and Malanowski, 1987Based on data from 440. to 488. K.; AC
30.0280.N/AStephenson and Malanowski, 1987Based on data from 246. to 295. K. See also Dykyj, 1970.; AC
27.5 ± 0.1313.CMajer, Svoboda, et al., 1981AC
26.5 ± 0.1328.CMajer, Svoboda, et al., 1981AC

Enthalpy of vaporization

ΔvapH = A exp(-βTr) (1 − Tr)β
    ΔvapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
    Tr = reduced temperature (T / Tc)

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Temperature (K) A (kJ/mol) β Tc (K) Reference Comment
298. to 328.44.460.2884487.8Majer and Svoboda, 1985 

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
7.04162.8Acree, 1991AC

Enthalpy of phase transition

ΔHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
7.0367162.83crystaline, IliquidKosarukina, Zhogin, et al., 1982, 2DH

Entropy of phase transition

ΔStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
43.22162.83crystaline, IliquidKosarukina, Zhogin, et al., 1982, 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

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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: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV) Method Reference Comment
11.1PEChau and McDowell, 1976 
11.44 ± 0.01PEChau and McDowell, 1976Vertical value

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.

Ruff and Bretschneider, 1933
Ruff, O.; Bretschneider, O., The Preparation of Hexafluoroethane and Tetrafluoroethene from Tetrafluoromethane, Z. Anorg. Allg. Chem., 1933, 210, 173. [all data]

Kosarukina, Zhogin, et al., 1982
Kosarukina, E.A.; Zhogin, D.Yu.; Kolesov, V.P.; Kuramshina, G.M.; Pentin, Y.A.; Izmest'ev, I.V., Heat capacity in the range 8-300 K, thermodyn. functions, and conformational isomerism of 1,2-dibromotetrafluoroethane, Zh. Fiz. Khim., 1982, 56, 1892. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [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]

Majer, Svoboda, et al., 1981
Majer, Vladimír; Svoboda, Václav; Posta, Antonín; Pick, Jirí, Determination of heats of vaporization and some other thermodynamic quantities for three fluorinated halogen ethanes, Collect. Czech. Chem. Commun., 1981, 46, 4, 817-822, https://doi.org/10.1135/cccc19810817 . [all data]

Dykyj, 1970
Dykyj, J., Petrochemica, 1970, 10, 2, 51. [all data]

Acree, 1991
Acree, William E., Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation, Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H . [all data]

Kosarukina, Zhogin, et al., 1982, 2
Kosarukina, E.A.; Zhogin, D.Yu.; Kolesov, V.P.; Kuramshina, G.M.; Pentin, Yu.A.; Izmest'ev, I.V.; Danilov, A.V., Heat capacity in the range 8-300 K, thermodynamic functions, and conformational isomerism of 1,2-dibromotetrafluoroethane, Zhur. Fiz. Khim., 1982, 56, 1892-1896. [all data]

Chau and McDowell, 1976
Chau, F.T.; McDowell, C.A., Photoelectron spectra of 1,2-dibromo-1,1-difluoroethane, 1,2-bromochloroethane, and 1,2-dichloro-, 1,2-dibromo-, and 1,2-diiodotetrafluoroethane, J. Phys. Chem., 1976, 80, 2923. [all data]


Notes

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