Sulfur hexafluoride

Formula: F₆S
Molecular weight: 146.055
IUPAC Standard InChI: InChI=1S/F6S/c1-7(2,3,4,5)6
IUPAC Standard InChIKey: SFZCNBIFKDRMGX-UHFFFAOYSA-N
CAS Registry Number: 2551-62-4
Chemical structure:
This structure is also available as a 2d Mol file
Other names: Sulfur fluoride; OC-6-11; Elegas; SF6; Hexafluorure de soufre; UN 1080; Esaflon; sulphur hexafluoride
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Phase change data

Go To: Top, Gas phase ion energetics data, References, Notes

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

Quantity	Value	Units	Method	Reference	Comment
T_boil	209.3	K	N/A	PCR Inc., 1990	BS
Quantity	Value	Units	Method	Reference	Comment
T_triple	223.72	K	N/A	Ohta, Yamamuro, et al., 1994	Crystal phase 1 phase; Uncertainty assigned by TRC = 0.01 K; TRC
Quantity	Value	Units	Method	Reference	Comment
T_c	568.8	K	N/A	Matzik and Schneider, 1985	Uncertainty assigned by TRC = 0.7 K; TRC
T_c	318.72	K	N/A	Goloborod'ko and Khodeeva, 1972	Vis, as Goloborod'ko and Khodeeva Zh.Fiz.Khim. 1969,43,1340; TRC
T_c	318.71	K	N/A	Makarevich, Sokolova, et al., 1968	Uncertainty assigned by TRC = 0.005 K; TRC
T_c	318.76	K	N/A	Khodeeva, 1966	TRC
T_c	591.85	K	N/A	Atack and Schneider, 1951	Uncertainty assigned by TRC = 0.05 K; By observation of meniscus and plot of density vs. temp. Temperature measured with Pt Res. Therm., calibration at N.B.S., presumably IPTS-48; TRC
Quantity	Value	Units	Method	Reference	Comment
P_c	24.90	bar	N/A	Matzik and Schneider, 1985	Uncertainty assigned by TRC = 0.30 bar; TRC
P_c	37.586	bar	N/A	Makarevich, Sokolova, et al., 1968	Uncertainty assigned by TRC = 0.005 bar; TRC
Quantity	Value	Units	Method	Reference	Comment
V_c	0.198	l/mol	N/A	Makarevich, Sokolova, et al., 1968	Uncertainty assigned by TRC = 0.0004 l/mol; Vis, rect; method as Sorina and Efremova Russ. J. Phys. Chem. 1966, 40, 143.; TRC
V_c	0.197	l/mol	N/A	Khodeeva, 1966	Vis, samples thoroughly purified; TRC
Quantity	Value	Units	Method	Reference	Comment
ρ_c	5.0581	mol/l	N/A	Makarevich and Sokolova, 1973	Uncertainty assigned by TRC = 0.001 mol/l; Vis, volume adjusted by injection of mercury; TRC
ρ_c	5.147	mol/l	N/A	Atack and Schneider, 1951	Uncertainty assigned by TRC = 0.004 mol/l; from plot of density vs temperature, at the Tc; TRC

Enthalpy of sublimation

Δ_subH (kJ/mol)	Temperature (K)	Reference	Comment
23.2 ± 0.01	186.	Ohta, Yamamuro, et al., 1994, 2	AC
23.3	191.	Klemm and Henkel, 1932	Based on data from 175. to 207. 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:

Gas phase ion energetics data

Go To: Top, Phase change data, References, Notes

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
MM - Michael M. Meot-Ner (Mautner)
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
LL - Sharon G. Lias and Joel F. Liebman
B - John E. Bartmess

Quantity	Value	Units	Method	Reference	Comment
IE (evaluated)	15.32 ± 0.02	eV	N/A	N/A	L
Quantity	Value	Units	Method	Reference	Comment
Proton affinity (review)	575.3	kJ/mol	N/A	Hunter and Lias, 1998	HL
Quantity	Value	Units	Method	Reference	Comment
Gas basicity	550.7	kJ/mol	N/A	Hunter and Lias, 1998	HL

Electron affinity determinations

EA (eV)	Method	Reference	Comment
0.910 ± 0.070	N/A	Menk, Das, et al., 2014	B
1.030 ± 0.050	N/A	Troe, Miller, et al., 2012	W4 theory supports this (12KER/MAR) and lower level calculations have flaws; B
1.070 ± 0.070	TDAs	Chen, Wiley, et al., 1994	B
1.15 ± 0.15	Kine	Chen, Shuie, et al., 1988	From the temperature dependence of the API spectra of SF5-/SF6-; B
1.05 ± 0.10	TDEq	Grimsrud, Chowdhury, et al., 1985	ΔGea(423 K) = -29.8 kcal/mol; ΔSea = +13 eu. See also Chowdhury, Heinis, et al., 1986, Bopp, Roscioli, et al., 2007; B
1.39 ± 0.13	Kine	Heneghan and Benson, 1983	B
0.799982	Kine	Lifshitz, 1983	Review: literature consistent with ΔS(act) for detachment = -14 eu; B
1.20 ± 0.30	N/A	Chase Jr., Curnutt, et al., 1982	Literature average; B
0.542052	LPD	Drzaic and Brauman, 1982	B
>0.934931	R-A	Refaey and Franklin, 1978	B
2.60 ± 0.10	ECD	Chen and Chen, 2007	B
2.60 ± 0.10	ECD	Chen and Chen, 2007	B
3.15999	LPD	Datskos, Carter, et al., 1995	Stated electron affinity is the Vertical Detachment Energy; B
>0.698163	ECD	Chen and Wentworth, 1983	B
0.46 ± 0.20	NBIE	Compton, Reinhardt, et al., 1978	B
0.75 ± 0.10	NBIE	Leffert, Tang, et al., 1974	B
0.54 ± 0.17	NBIE	Compton and Cooper, 1973	B
0.53 ± 0.10	NBIE	Compton, Cooper, et al., 1973	B
>0.60 ± 0.10	Endo	Lifshitz, Tiernan, et al., 1973	B
0.95 ± 0.52	IMRB	Fehsenfeld, 1971	B
0.43	IMRB	Lifshitz, Hughes, et al., 1970	B
>0.698163	ECD	Chen, George, et al., 1968	B
1.10002	ES	Compton, Christophorou, et al., 1966	B
0.32 ± 0.15	NBIE	Hubers and Los, 1975	B
1.49 ± 0.22	SI	Kay and Page, 1964	The Magnetron method, lacking mass analysis, is not considered reliable.; B

Gas basicity at 298K

Gas basicity (review) (kJ/mol)	Reference	Comment
575.3	Pepi, Ricci, et al., 2005	T = 298K; PA(SF6) equated to PA(N2O) based on dissociative PT reactions with large entropy changes that may affect the kinetics.; MM

Ionization energy determinations

IE (eV)	Method	Reference	Comment
15.30	PE	Delwiche, 1969	RDSH
15.30	PE	Delwiche, 1969	RDSH
15.35 ± 0.02	PE	Frost, McDowell, et al., 1967	RDSH
15.7	PE	Bieri, Asbrink, et al., 1982	Vertical value; LBLHLM
15.7	PE	Sell and Kupperman, 1978	Vertical value; LLK
15.69	PE	Potts, Lempka, et al., 1970	Vertical value; RDSH
15.81	PE	Delwiche, 1969	Vertical value; RDSH

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference	Comment
F⁺	37.5 ± 1.0	?	EI	Pullen and Stockdale, 1976	LLK
FS⁺	37.6 ± 3.0	?	EI	Pullen and Stockdale, 1976	LLK
FS⁺	30.5 ± 0.5	?	EI	Hildenbrand, 1973	LLK
F₂⁺	18.0 ± 1.0	?	EI	Pullen and Stockdale, 1976	LLK
F₂S⁺	27.0 ± 0.3	?	EI	Pullen and Stockdale, 1976	LLK
F₂S⁺	27.5 ± 0.5	?	EI	Hildenbrand, 1973	LLK
F₃S⁺	18.79 ± 0.14	?	PI	Mitsuke, Suzuki, et al., 1990	LL
F₃S⁺	19.4 ± 0.5	?	PI	Sasanuma, Ishiguro, et al., 1979	LLK
F₃S⁺	19.6 ± 0.5	?	EI	Pullen and Stockdale, 1976	LLK
F₃S⁺	20.0 ± 0.5	?	EI	Hildenbrand, 1973	LLK
SF₃⁺	19.80 ± 0.10	F₂+F?	EI	Delwiche, 1969	RDSH
F₃S⁺	21.5	3F	PE	Delwiche, 1969	RDSH
F₃S⁺	19.8 ± 0.1	F₂+F	PE	Delwiche, 1969	RDSH
F₄S⁺	19.1 ± 0.5	2F	PI	Sasanuma, Ishiguro, et al., 1979	LLK
F₄S⁺	19.6 ± 1.0	2F	EI	Pullen and Stockdale, 1976	LLK
F₄S⁺	18.44 ± 0.10	2F	EI	Hildenbrand, 1973	LLK
F₄S⁺	18.5 ± 0.1	2F	PE	Delwiche, 1969	RDSH
SF₄⁺	18.50 ± 0.10	2F?	EI	Delwiche, 1969	RDSH
F₅S⁺	15.32 ± 0.04	F	PI	Mitsuke, Suzuki, et al., 1990	LL
F₅S⁺	≤13.78	F	IMB	Stone and Wytenberg, 1989	T = 298K; LL
F₅S⁺	13.97 ± 0.04	F	END	Tichy, Javahery, et al., 1987	LBLHLM
F₅S⁺	≤14.4	F	IMB	Shul, Upschulte, et al., 1987	LBLHLM
F₅S⁺	14.62 ± 0.09	F	IMB	Babcock and Streit, 1981	LLK
F₅S⁺	15.3 ± 0.2	F	PI	Sasanuma, Ishiguro, et al., 1979	LLK
F₅S⁺	16.2 ± 0.2	F	EI	Pullen and Stockdale, 1976	LLK
F₅S⁺	≤14.53 ± 0.05	F	PIPECO	Simm, Danby, et al., 1975	LLK
F₅S⁺	15.50 ± 0.10	F	EI	Hildenbrand, 1973	LLK
F₅S⁺	15.75 ± 0.05	F	PE	Delwiche, 1969	RDSH
SF₅⁺	15.75 ± 0.05	F	EI	Delwiche, 1969	RDSH
SF₅⁺	15.29	F	PI	Dibeler and Walker, 1966	RDSH
SF₅⁺	15.85 ± 0.15	F	EI	Fox and Curran, 1961	RDSH
F₅S⁺	15.9 ± 0.2	F	EI	Dibeler and Mohler, 1948	RDSH

References

Go To: Top, Phase change data, Gas phase ion energetics data, Notes

PCR Inc., 1990
PCR Inc., Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 1. [all data]

Ohta, Yamamuro, et al., 1994
Ohta, T.; Yamamuro, O.; Suga, H., Heat capacity and enthalpy of sublimation of sulful hexafluoride, J. Chem. Thermodyn., 1994, 26, 319-31. [all data]

Matzik and Schneider, 1985
Matzik, I.; Schneider, G.M., Fluid phase equilibria of binary mixtures of sulfur hexafluoride with octane, nonane, hendecane, and cis-decahydronaphthalene at temperature between 280 K and 440 K and at pressures up to 140 MPa, Ber. Bunsen-Ges. Phys. Chem., 1985, 89, 551. [all data]

Goloborod'ko and Khodeeva, 1972
Goloborod'ko, N.P.; Khodeeva, S.M., Russ. J. Phys. Chem. (Engl. Transl.), 1972, 46, 235-7. [all data]

Makarevich, Sokolova, et al., 1968
Makarevich, L.A.; Sokolova, E.S.; Sorina, G.A., Critical Parameters pf Sulfur Hexafluoride, Zh. Fiz. Khim., 1968, 42, 22-3. [all data]

Khodeeva, 1966
Khodeeva, S.M., Visual Observation of Gas-Gas Mixture, Russ. J. Phys. Chem. (Engl. Transl.), 1966, 40, 1061-3. [all data]

Atack and Schneider, 1951
Atack, D.; Schneider, W.G., The Coexistence Curve of Sulfur Hexafluoride in the Critical Region., J. Phys. Colloid Chem., 1951, 55, 532. [all data]

Makarevich and Sokolova, 1973
Makarevich, L.A.; Sokolova, O.N., Russ. J. Phys. Chem. (Engl. Transl.), 1973, 47, 436-7. [all data]

Ohta, Yamamuro, et al., 1994, 2
Ohta, Tomoko; Yamamuro, Osamu; Suga, Hiroshi, Heat capacity and enthalpy of sublimation of sulfur hexafluoride, The Journal of Chemical Thermodynamics, 1994, 26, 3, 319-331, https://doi.org/10.1016/0021-9614(94)90009-4 . [all data]

Klemm and Henkel, 1932
Klemm, Wilhelm; Henkel, Paul, «65533»ber einige physikalische Eigenschaften von SF6, SeF6, TeF6 und CF4, Z. Anorg. Allg. Chem., 1932, 207, 1, 73-86, https://doi.org/10.1002/zaac.19322070107 . [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Menk, Das, et al., 2014
Menk, S.; Das, S.; Blaum, K.; Froese, M.W.; Lange, M.; Mukherjee, M.; Repnow, R.; Schwalm, D.; von Hahn, R.; Wolf, A., Vibrational autodetachment of sulfur hexafluoride anions at its long-lifetime limit, Phys. Rev. A, 2014, 89, 2, 022502, https://doi.org/10.1103/PhysRevA.89.022502 . [all data]

Troe, Miller, et al., 2012
Troe, J.; Miller, T.M.; Viggiano, A.A., Communication: Revised electron affinity of SF6 from kinetic data, J. Chem. Phys., 2012, 136, 12, 121102, https://doi.org/10.1063/1.3698170 . [all data]

Chen, Wiley, et al., 1994
Chen, E.C.M.; Wiley, J.R.; Batten, C.F.; Wentworth, W.E., Determination of the Electron Affinities of Molecules Using Negative Ion Mass Spectrometry, J. Phys. Chem., 1994, 98, 1, 88, https://doi.org/10.1021/j100052a016 . [all data]

Chen, Shuie, et al., 1988
Chen, E.C.M.; Shuie, L.-R.; DSa, E.D.; Batten, C.F.; Wentworth, W.E., The Negative Ion States of SF₆, J. Chem. Phys., 1988, 88, 8, 4711, https://doi.org/10.1063/1.454710 . [all data]

Grimsrud, Chowdhury, et al., 1985
Grimsrud, E.P.; Chowdhury, S.; Kebarle, P., Electron affinity of SF₆ and perfluoromethylcyclohexane. The unusual kinetics of electron transfer reactions A- + B- + A, where A = SF₆ or perfluorinated cycloalkanes, J. Chem. Phys., 1985, 83, 1059. [all data]

Chowdhury, Heinis, et al., 1986
Chowdhury, S.; Heinis, T.; Grimsrud, E.P.; Kebarle, P., Entropy Changes and Electron Affinities from Gas-Phase Electron Transfer Equilibria: A^- + B = A + B^-, J. Phys. Chem., 1986, 90, 12, 2747, https://doi.org/10.1021/j100403a037 . [all data]

Bopp, Roscioli, et al., 2007
Bopp, J.C.; Roscioli, J.R.; Johnson, M.A.; Miller, T.M.; Viggiano, A.A.; Villano, S.M.; Wren, S.W.; Lineberger, Spectroscopic characterization of the isolated SF6- and C4F8- anions: Observation of very long harmonic progressions in symmetric deformation modes upon photodetachment, J. Phys. Chem. A, 2007, 111, 7, 1214-1221, https://doi.org/10.1021/jp0665372 . [all data]

Heneghan and Benson, 1983
Heneghan, S.P.; Benson, S.W., Kinetics and thermochemistry of electron attachment to SF₆, Int. J. Chem. Kinet., 1983, 15, 109. [all data]

Lifshitz, 1983
Lifshitz, C., Energy-entropy trade-offs in the unimolecular decompositions of SF₆^-, J. Phys. Chem., 1983, 87, 3474. [all data]

Chase Jr., Curnutt, et al., 1982
Chase Jr.; Curnutt, J.L.; Downy Jr.; McDonald, R.A.; Syverrud, A.N.; Valenzuela, E.A., JANAF Thermochemical Tables 1982 Supplement, J. Phys. Chem. Ref. Data, 1982, 11, 3, 695, https://doi.org/10.1063/1.555666 . [all data]

Drzaic and Brauman, 1982
Drzaic, P.S.; Brauman, J.I., Electron photodetachment of sulfur hexafluoride anion. Comments on the structure of SF₆^-, J. Am. Chem. Soc., 1982, 104, 13. [all data]

Refaey and Franklin, 1978
Refaey, K.M.A.; Franklin, J.L., Collisonal decomposition of SF₆-, Int. J. Mass Spectrom. Ion Phys., 1978, 26, 125. [all data]

Chen and Chen, 2007
Chen, E.C.M.; Chen, E.S., Electron affinities and activation energies for reactions with thermal electrons: SF6 and SF5, Phys. Rev. A, 2007, 76, 3, 032508, https://doi.org/10.1103/PhysRevA.76.032508 . [all data]

Datskos, Carter, et al., 1995
Datskos, P.G.; Carter, J.G.; Christophorou, L.G., Photodetachment of SF6-, Chem. Phys. Lett., 1995, 239, 1-3, 38, https://doi.org/10.1016/0009-2614(95)00417-3 . [all data]

Chen and Wentworth, 1983
Chen, E.C.M.; Wentworth, W.E., Determination of molecular electron affinities using the electron capture detector in the pulse sampling mode at steady state, J. Phys. Chem., 1983, 87, 45. [all data]

Compton, Reinhardt, et al., 1978
Compton, R.N.; Reinhardt, P.W.; Cooper, C.D., Collisional ionization between fast alkali atoms and selected hexafluoride molecules, J. Chem. Phys., 1978, 68, 2023. [all data]

Leffert, Tang, et al., 1974
Leffert, C.B.; Tang, S.Y.; Rothe, E.W.; Cheng, T.C., Collisional ionization of Cs with SF₆, J. Chem. Phys., 1974, 61, 4929. [all data]

Compton and Cooper, 1973
Compton, R.N.; Cooper, C.D., Molecular electron affinities from collisional ionization of cesium. II. SF₆ and TeF₆, J. Chem. Phys., 1973, 59, 4140. [all data]

Compton, Cooper, et al., 1973
Compton, R.N.; Cooper, R.D.; Divver, W.T.; Reinhardt, P.W., Molecular electron affinities from collisional ionization of cesium: SF₆, Bull. Am. Phys. Soc., 1973, 18, 810. [all data]

Lifshitz, Tiernan, et al., 1973
Lifshitz, C.; Tiernan, T.O.; Hughes, B.M., Electron affinities from endothermic negative-ion charge transfer reactions. IV. SF₆, selected fluorocarbons, and other polyatomic molecules, J. Chem. Phys., 1973, 59, 3182. [all data]

Fehsenfeld, 1971
Fehsenfeld, F.C., Ion Chemistry of SF₆, J. Chem. Phys., 1971, 54, 438. [all data]

Lifshitz, Hughes, et al., 1970
Lifshitz, C.; Hughes, B.M.; Tiernan, T.O., Electron Affinities for Endothermic Negative Ion Charge Transfer Reactions: NO₂ and SF₆, Chem. Phys. Lett., 1970, 7, 4, 469, https://doi.org/10.1016/0009-2614(70)80339-6 . [all data]

Chen, George, et al., 1968
Chen, E.C.M.; George, R.D.; Wentworth, W.E., Experimental Determination of Rate Constants for Thermal Electron Attachment to Gaseous SF₆ and C₇F₁₄, J. Chem. Phys., 1968, 49, 4, 1973, https://doi.org/10.1063/1.1670342 . [all data]

Compton, Christophorou, et al., 1966
Compton, R.N.; Christophorou, L.G.; Hurst, G.S.; Reinhardt, P.W., Nondissociative Electron Capture in Complex Molecules and Negative Ion Lifetimes, J. Chem. Phys., 1966, 45, 12, 4634, https://doi.org/10.1063/1.1727547 . [all data]

Hubers and Los, 1975
Hubers, M.M.; Los, J., Ion pair formation in alkali-SF₆ collisions: Dependence on collisional and vibrational energy, Chem. Phys., 1975, 10, 235. [all data]

Kay and Page, 1964
Kay, J.; Page, F.M., Determination of Electron Affinities. Part 7.- Sulphur Hexafluoride and Disulphur Decafluoride, Trans. Farad. Soc., 1964, 60, 1042, https://doi.org/10.1039/tf9646001042 . [all data]

Pepi, Ricci, et al., 2005
Pepi, F.; Ricci, A.; Di Stefano, M.; Rosi, M., Gas phase protonation of trifluoromethyl sulfur pentafluoride, Phys. Chem. Chem. Phys., 2005, 7, 1181. [all data]

Delwiche, 1969
Delwiche, J., Ionization of sulphur hexafluoride by photon and electron impact, Bull. Classe Sci. Acad. Roy. Belg., 1969, 55, 215. [all data]

Frost, McDowell, et al., 1967
Frost, D.C.; McDowell, C.A.; Sandhu, J.S.; Vroom, D.A., Photoelectron spectrum of sulfur hexafluoride at 584 A, J. Chem. Phys., 1967, 46, 2008. [all data]

Bieri, Asbrink, et al., 1982
Bieri, G.; Asbrink, L.; Von Niessen, W., 30.4-nm He(II) photoelectron spectra of organic molecules, J. Electron Spectrosc. Relat. Phenom., 1982, 27, 129. [all data]

Sell and Kupperman, 1978
Sell, J.A.; Kupperman, A., Angular distributions in the photoelectron spectroscopy of SF₆, Chem. Phys., 1978, 33, 379. [all data]

Potts, Lempka, et al., 1970
Potts, A.W.; Lempka, H.J.; Streets, D.G.; Price, W.C., Photoelectron spectra of the halides of elements in groups III, IV, V and VI, Phil. Trans. Roy. Soc. (London), 1970, A268, 59. [all data]

Pullen and Stockdale, 1976
Pullen, B.P.; Stockdale, J.A.D., Dissociative ionization of SF₆ by electron impact, Int. J. Mass Spectrom. Ion Phys., 1976, 19, 35. [all data]

Hildenbrand, 1973
Hildenbrand, D.L., Mass spectrometric studies of some gaseous sulfur fluorides, J. Phys. Chem., 1973, 77, 897. [all data]

Mitsuke, Suzuki, et al., 1990
Mitsuke, K.; Suzuki, S.; Imamura, T.; Koyano, I., Negative-ion mass spectrometric study of ion-pair formation in the vacuum ultraviolet. III. SF₆ Ü F- + SF₅+, J. Chem. Phys., 1990, 93, 8717. [all data]

Sasanuma, Ishiguro, et al., 1979
Sasanuma, M.; Ishiguro, E.; Hayaisha, T.; Masuko, H.; Morioka, Y.; Nakajima, T.; Nakamura, M., Photoionisation of SF₆ in the XUV region, J. Phys. B:, 1979, 12, 4057. [all data]

Stone and Wytenberg, 1989
Stone, J.A.; Wytenberg, W.J., A high pressure mass spectrometric study of the formation and chemistry of the pentafluorosulphur cation (SF₅⁺), Int. J. Mass Spectrom. Ion Processes, 1989, 94, 269. [all data]

Tichy, Javahery, et al., 1987
Tichy, M.; Javahery, G.; Twiddy, N.D.; Ferguson, E.E., The thermal energy reactions HCl⁺ + SF₆ Ü SF₅⁺ + HF + Cl and HCl⁺ + CF₄ Ü CF₃⁺ + HF + Cl, Int. J. Mass Spectrom. Ion Processes, 1987, 79, 231. [all data]

Shul, Upschulte, et al., 1987
Shul, R.J.; Upschulte, B.L.; Passarella, R.; Keesee, R.G.; Castleman, A.W., Thermal energy charge-transfer reactions of Ar⁺ and Ar₂⁺, J. Phys. Chem., 1987, 91, 2556. [all data]

Babcock and Streit, 1981
Babcock, L.M.; Streit, G.E., Ion-molecule reactions of SF₆: Determination of I. P. (SF₆), A. P.(SF₅⁺/SF₆), and D(SF₅-F), J. Chem. Phys., 1981, 74, 5700. [all data]

Simm, Danby, et al., 1975
Simm, I.G.; Danby, C.J.; Eland, J.H.D.; Mansell, P.I., Translational energy release in the loss of fluorine atoms from the ions SF₆⁺, CF₄⁺ and C₂F₆⁺, J. Chem. Soc., 1975, 426. [all data]

Dibeler and Walker, 1966
Dibeler, V.H.; Walker, J.A., Photoionization efficiency curve for SF₆ in the wavelength region 1050 to 600, J. Chem. Phys., 1966, 44, 4405. [all data]

Fox and Curran, 1961
Fox, R.E.; Curran, R.K., Ionization processes in CCl₄ and SF₆ by electron beams, J. Chem. Phys., 1961, 34, 1595. [all data]

Dibeler and Mohler, 1948
Dibeler, V.H.; Mohler, F.L., Dissociation of SF₆, CF₄, and SiF₄ by electron impact, J. Res. Natl. Bur. Stand. U.S., 1948, 40, 25. [all data]

Notes

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

Symbols used in this document:

AE	Appearance energy
EA	Electron affinity
IE (evaluated)	Recommended ionization energy
P_c	Critical pressure
T_boil	Boiling point
T_c	Critical temperature
T_triple	Triple point temperature
V_c	Critical volume
Δ_subH	Enthalpy of sublimation
ρ_c	Critical density

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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