Tungsten hexafluoride
- Formula: F6W
- Molecular weight: 297.83
- IUPAC Standard InChI: InChI=1S/6FH.W/h6*1H;/q;;;;;;+6/p-6
- IUPAC Standard InChIKey: NXHILIPIEUBEPD-UHFFFAOYSA-H
- CAS Registry Number: 7783-82-6
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Tungsten fluoride (WF6), (OC-6-11)-; Tungsten fluoride (WF6); Tungsten(VI) fluoride; Tungsten fluoride; UN 2196; WF6
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Phase change data
Go To: Top, 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:
AC - William E. Acree, Jr., James S. Chickos
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 25.8 | 316. | Nisel'son, Nikolaev, et al., 1968 | Based on data from 290. to 343. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 201.5 to 290.4 | 4.55569 | 1021.208 | -64.70 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Gas phase ion energetics data
Go To: Top, Phase change 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 3.36 ± 0.20 | IMRB | Viggiano, Paulson, et al., 1985 | B |
| 3.50 ± 0.10 | IMRB | George and Beauchamp, 1979 | EA: > F-, < Cl-; B |
| >5.10 ± 0.50 | NBIE | Compton, Reinhardt, et al., 1978 | B |
| 3.70 ± 0.20 | NBIE | Dispert and Lacmann, 1977 | B |
| >4.90 ± 0.40 | NBIE | Mathur, Rothe, et al., 1977 | B |
| 2.74061 | SI | Page and Goode, 1969 | The Magnetron method, lacking mass analysis, is not considered reliable.; B |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| F3W+ | 24.0 ± 0.5 | ? | EI | Hildenbrand, 1975 | LLK |
| F4W+ | 19.5 ± 0.3 | 2F | EI | Hildenbrand, 1975 | LLK |
| F5W+ | 15.24 ± 0.10 | F | EI | Hildenbrand, 1975 | LLK |
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.
Nisel'son, Nikolaev, et al., 1968
Nisel'son, L.A.; Nikolaev, R.K.; Sokolova, T.D.; Stolyarov, V.I.; Korolev, Yu.M.,
Izv. Sib. Otd. Akad. Nauk SSSR, Ser. Khim. Nauk, 1968, 109. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Viggiano, Paulson, et al., 1985
Viggiano, A.A.; Paulson, J.F.; Dale, F.; Henchman, M.; Adams, N.G.; Smith, D.,
Ion chemistry and electon affinity of WF6,
J. Phys. Chem., 1985, 89, 2264. [all data]
George and Beauchamp, 1979
George, P.M.; Beauchamp, J.L.,
The electron and fluoride affinites of tungsten hexafluoride by ICR spectroscopy,
Chem. Phys., 1979, 36, 345. [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]
Dispert and Lacmann, 1977
Dispert, H.; Lacmann, K.,
Formation of WF6- and its dissociative products by collisional ionization,
Chem. Phys. Lett., 1977, 45, 311. [all data]
Mathur, Rothe, et al., 1977
Mathur, B.P.; Rothe, R.W.; Reck, G.P.,
Ionization reactions of metal hexafluorides with alkali atoms and dimers,
J. Chem. Phys., 1977, 67, 377. [all data]
Page and Goode, 1969
Page, F.M.; Goode, G.C.,
Negative Ions and the Magnetron., Wiley, NY, 1969. [all data]
Hildenbrand, 1975
Hildenbrand, D.L.,
Thermochemistry of the gaseous tungsten fluorides,
Chem. Phys. Lett., 1975, 62, 3074. [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 ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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