Propane, 1,1,1,3,3,3-hexafluoro-

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Phase change data

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil272.1KN/AHwang, DesMarteau, et al., 1992Uncertainty assigned by TRC = 0.5 K; TRC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
5.86303.ABobbo, Camporese, et al., 2000Based on data from 283. to 323. K.; AC

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:


Reaction thermochemistry data

Go To: Top, Phase change data, Gas phase ion energetics 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: John E. Bartmess

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

C3HF6- + Hydrogen cation = Propane, 1,1,1,3,3,3-hexafluoro-

By formula: C3HF6- + H+ = C3H2F6

Quantity Value Units Method Reference Comment
Δr363.7 ± 4.1kcal/molG+TSMcDonald, Chowdhury, et al., 1984gas phase; Weaker than Koppel, Taft, et al., 1994 by 12 kcal/mol, but agree with G3MP2B3 calculations better. Between PhCOCH3, CF3CH2OH.; value altered from reference due to change in acidity scale
Δr351.6 ± 2.2kcal/molG+TSKoppel, Taft, et al., 1994gas phase; 12 kcal/mol stronger than McDonald, Chowdhury, et al., 1984. Dissociative proton transfer to CF3CH=CF2 and HF?
Quantity Value Units Method Reference Comment
Δr356.0 ± 4.0kcal/molIMRBMcDonald, Chowdhury, et al., 1984gas phase; Weaker than Koppel, Taft, et al., 1994 by 12 kcal/mol, but agree with G3MP2B3 calculations better. Between PhCOCH3, CF3CH2OH.; value altered from reference due to change in acidity scale
Δr343.9 ± 2.0kcal/molIMREKoppel, Taft, et al., 1994gas phase; 12 kcal/mol stronger than McDonald, Chowdhury, et al., 1984. Dissociative proton transfer to CF3CH=CF2 and HF?

Gas phase ion energetics data

Go To: Top, Phase change 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: John E. Bartmess

De-protonation reactions

C3HF6- + Hydrogen cation = Propane, 1,1,1,3,3,3-hexafluoro-

By formula: C3HF6- + H+ = C3H2F6

Quantity Value Units Method Reference Comment
Δr363.7 ± 4.1kcal/molG+TSMcDonald, Chowdhury, et al., 1984gas phase; Weaker than Koppel, Taft, et al., 1994 by 12 kcal/mol, but agree with G3MP2B3 calculations better. Between PhCOCH3, CF3CH2OH.; value altered from reference due to change in acidity scale
Δr351.6 ± 2.2kcal/molG+TSKoppel, Taft, et al., 1994gas phase; 12 kcal/mol stronger than McDonald, Chowdhury, et al., 1984. Dissociative proton transfer to CF3CH=CF2 and HF?
Quantity Value Units Method Reference Comment
Δr356.0 ± 4.0kcal/molIMRBMcDonald, Chowdhury, et al., 1984gas phase; Weaker than Koppel, Taft, et al., 1994 by 12 kcal/mol, but agree with G3MP2B3 calculations better. Between PhCOCH3, CF3CH2OH.; value altered from reference due to change in acidity scale
Δr343.9 ± 2.0kcal/molIMREKoppel, Taft, et al., 1994gas phase; 12 kcal/mol stronger than McDonald, Chowdhury, et al., 1984. Dissociative proton transfer to CF3CH=CF2 and HF?

References

Go To: Top, Phase change data, Reaction thermochemistry 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.

Hwang, DesMarteau, et al., 1992
Hwang, S.H.; DesMarteau, D.D.; Beyerlein, A.L.; Smith, N.D.; Joyner, P., The heat capacity of fluorinated propane and butane derivatives by differential scanning calorimetry, J. Therm. Anal., 1992, 38, 2515-28. [all data]

Bobbo, Camporese, et al., 2000
Bobbo, Sergio; Camporese, Roberto; Stryjek, Roman, ( Vapour + liquid ) equilibrium measurement and correlation of the refrigerant ( propane + 1,1,1,3,3,3-hexafluoropropane) atT= ( 283.13, 303.19, and 323.26) K, The Journal of Chemical Thermodynamics, 2000, 32, 12, 1647-1656, https://doi.org/10.1006/jcht.2000.0713 . [all data]

McDonald, Chowdhury, et al., 1984
McDonald, R.N.; Chowdhury, A.K.; McGhee, W.D., Gas-Phase Generation of 1,1,1,3,3,3-Hexafluoroisopropylidene Anion Radical: Proton Affinity and Heat of Formation of (CF3)2C- and (CF3)2CH-, J. Am. Chem. Soc., 1984, 106, 15, 4112, https://doi.org/10.1021/ja00327a008 . [all data]

Koppel, Taft, et al., 1994
Koppel, I.A.; Taft, R.W.; Anvia, F.; Zhu, S.Z.; Hu, L.Q.; Sung, K.S.; Desmarteau, D.D.; Yagupolskii, L.M., The Gas-Phase Acidities of Very Strong Neutral Bronsted Acids, J. Am. Chem. Soc., 1994, 116, 7, 3047, https://doi.org/10.1021/ja00086a038 . [all data]


Notes

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, References