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

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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	24.57	atm	N/A	Matzik and Schneider, 1985	Uncertainty assigned by TRC = 0.30 atm; TRC
P_c	37.094	atm	N/A	Makarevich, Sokolova, et al., 1968	Uncertainty assigned by TRC = 0.005 atm; 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 (kcal/mol)	Temperature (K)	Reference	Comment
5.54 ± 0.002	186.	Ohta, Yamamuro, et al., 1994, 2	AC
5.57	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:

Reaction thermochemistry data

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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

( • Sulfur hexafluoride ) + = ( • 2)

By formula: (F^- • F₆S) + F₆S = (F^- • 2F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.00 ± 0.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff = +1.4 at 141 K
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-1.40 ± 0.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff = +1.4 at 141 K

F₆S^- + Sulfur hexafluoride = (F₆S^- • )

By formula: F₆S^- + F₆S = (F₆S^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.30 ± 0.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff=+0.37 at 141K
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-3.10 ± 0.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff=+0.37 at 141K

+ Sulfur hexafluoride = ( • )

By formula: F^- + F₆S = (F^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.40 ± 0.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-0.6 ± 3.0	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase

C₆H₄N₂O₄^- + Sulfur hexafluoride = (C₆H₄N₂O₄^- • )

By formula: C₆H₄N₂O₄^- + F₆S = (C₆H₄N₂O₄^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<8.50	kcal/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<1.90	kcal/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

C₆H₄N₂O₄^- + Sulfur hexafluoride = (C₆H₄N₂O₄^- • )

By formula: C₆H₄N₂O₄^- + F₆S = (C₆H₄N₂O₄^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<8.40	kcal/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<1.70	kcal/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

F₅S^- + Sulfur hexafluoride = (F₅S^- • )

By formula: F₅S^- + F₆S = (F₅S^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<2.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; No formation at 141 K

+ Sulfur hexafluoride = ( • )

By formula: Cl^- + F₆S = (Cl^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<1.80	kcal/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

Gas phase ion energetics data

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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)	137.5	kcal/mol	N/A	Hunter and Lias, 1998	HL
Quantity	Value	Units	Method	Reference	Comment
Gas basicity	131.6	kcal/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) (kcal/mol)	Reference	Comment
137.5	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

Ion clustering data

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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. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

C₆H₄N₂O₄^- + Sulfur hexafluoride = (C₆H₄N₂O₄^- • )

By formula: C₆H₄N₂O₄^- + F₆S = (C₆H₄N₂O₄^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<8.50	kcal/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<1.90	kcal/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

C₆H₄N₂O₄^- + Sulfur hexafluoride = (C₆H₄N₂O₄^- • )

By formula: C₆H₄N₂O₄^- + F₆S = (C₆H₄N₂O₄^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<8.40	kcal/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<1.70	kcal/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

+ Sulfur hexafluoride = ( • )

By formula: Cl^- + F₆S = (Cl^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	<1.80	kcal/mol	IMRB	Chowdhury and Kebarle, 1986	gas phase

+ Sulfur hexafluoride = ( • )

By formula: F^- + F₆S = (F^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.40 ± 0.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-0.6 ± 3.0	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase

( • Sulfur hexafluoride ) + = ( • 2)

By formula: (F^- • F₆S) + F₆S = (F^- • 2F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.00 ± 0.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff = +1.4 at 141 K
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-1.40 ± 0.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff = +1.4 at 141 K

F₅S^- + Sulfur hexafluoride = (F₅S^- • )

By formula: F₅S^- + F₆S = (F₅S^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	<2.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; No formation at 141 K

F₆S^- + Sulfur hexafluoride = (F₆S^- • )

By formula: F₆S^- + F₆S = (F₆S^- • F₆S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.30 ± 0.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff=+0.37 at 141K
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-3.10 ± 0.30	kcal/mol	TDAs	Hiraoka, Shimizu, et al., 1995	gas phase; Entropy estimated. Gaff=+0.37 at 141K

References

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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]

Hiraoka, Shimizu, et al., 1995
Hiraoka, K.; Shimizu, A.; Minamitsu, A.; Nasu, M.; Fujimaki, S.; Yamabe, S., The small binding energies of the negative cluster ions: SF5-(SF6)1, SF6-(SF6)1 and F-(SF6)n (n=1 and 2), in the gas phase, Chem. Phys. Lett., 1995, 241, 5-6, 623, https://doi.org/10.1016/0009-2614(95)00676-U . [all data]

Chowdhury and Kebarle, 1986
Chowdhury, S.; Kebarle, P., Role of Binding Energies in A^-.B and A.B^- Complexes in the Kinetics of Gas Phase Electron Transfer Reactions:A^- + B = A + B^- Involving Perfluoro Compounds: SF₆, C₆F₁₁CF₃, J. Chem. Phys., 1986, 85, 9, 4989, https://doi.org/10.1063/1.451687 . [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
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Compton, Cooper, et al., 1973
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Notes

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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_rG°	Free energy of reaction at standard conditions
Δ_rH°	Enthalpy of reaction at standard conditions
Δ_subH	Enthalpy of sublimation
ρ_c	Critical density

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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