Uranium hexafluoride
- Formula: F6U
- Molecular weight: 352.01933
- IUPAC Standard InChIKey: SANRKQGLYCLAFE-UHFFFAOYSA-H
- CAS Registry Number: 7783-81-5
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Uranium fluoride (UF6); Uranium fluoride (238UF6); UF6; Uranium fluoride (UF6), (OC-6-11)-; Uranium fluoride; UN 2977; UN 2978; Hexafluorouranium; Uranium-238 hexafluoride
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Gas phase ion energetics data
Go To: Top, Vibrational and/or electronic energy levels, 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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
5.06 ± 0.20 | R-A | Borshchevskii, Boltalina, et al., 1988 | value altered from reference due to conversion from electron convention to ion convention; B |
5.51 ± 0.31 | R-A | Pyatenko, Guasarov, et al., 1984 | Critical review; value altered from reference due to conversion from electron convention to ion convention; B |
5.13 ± 0.31 | R-A | Skokan, Sorokin, et al., 1983 | Fluoride Affinity: 13.1±2 kcal > UF4; value altered from reference due to conversion from electron convention to ion convention; B |
>5.099621 | NBIE | Compton, 1977 | B |
4.90 ± 0.50 | IMRB | Beauchamp, 1976 | Endo F- transfer to BF3 at 1.5 eV observed; B |
6.33 ± 0.50 | TDEq | Pyatenko, Gusarov, et al., 1980 | B |
5.98 ± 0.43 | R-A | Mallouk, Rosenthal, et al., 1984 | B |
>5.499959 | IMRB | Annis and Stockdale, 1980 | B |
>3.6079 | IMRB | Streit and Newton, 1980 | B |
>4.30 ± 0.40 | NBIE | Mathur, Rothe, et al., 1977 | B |
2.90973 | SI | Page and Goode, 1969 | The Magnetron method, lacking mass analysis, is not considered reliable.; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
14.00 ± 0.10 | EI | Hildenbrand, 1977 | LLK |
14.14 | PE | Potts, Lempka, et al., 1970 | Vertical value; RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
F4U+ | 17.4 ± 0.1 | 2F | EI | Hildenbrand, 1977 | LLK |
F5U+ | 14.24 ± 0.10 | F | EI | Hildenbrand, 1977 | LLK |
Vibrational and/or electronic energy levels
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 by: Takehiko Shimanouchi
Symmetry: Oh Symmetry Number σ = 24
Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
---|---|---|---|---|---|---|---|---|---|---|
Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
a1g | 1 | Sym str | 667 | B | ia | 667.1 VS | gas | |||
eg | 2 | Deg str | 533 | B | ia | 532.5 W | gas | |||
f1u | 3 | Deg str | 626 | C | 626 | gas | ia | |||
f1u | 4 | Deg deform | 186 | C | 186.2 | gas | ia | |||
f2g | 5 | Deg deform | 202 | C | ia | 202 W | gas | |||
f2u | 6 | Deg deform | 142 | E | ia | ia | OC(2ν6) | |||
Source: Shimanouchi, 1972
Notes
VS | Very strong |
W | Weak |
ia | Inactive |
OC | Frequency estimated from an overtone or a combination tone indicated in the parentheses. |
B | 1~3 cm-1 uncertainty |
C | 3~6 cm-1 uncertainty |
E | 15~30 cm-1 uncertainty |
References
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Borshchevskii, Boltalina, et al., 1988
Borshchevskii, A.Ya.; Boltalina, O.V.; Sorokin, I.D.; Sidorov, L.N.,
Thermochemical Quantities for Gas Phase Iron, Uranium, and Molybdenum Fluorides, and Their Negative Ions.,
J. Chem. Thermodyn., 1988, 20, 5, 523, https://doi.org/10.1016/0021-9614(88)90080-8
. [all data]
Pyatenko, Guasarov, et al., 1984
Pyatenko, A.T.; Guasarov, A.V.; Gorokhov, L.N.,
Thermochemistry of Negative Ions in the U-F System,
Russ. J. Phys. Chem., 1984, 58, 1. [all data]
Skokan, Sorokin, et al., 1983
Skokan, E.V.; Sorokin, I.D.; Nikitin, M.I.; Chilingarov, N.S.; Sidorov, L.N.,
The electron affinity of UF6,
Russ. J. Phys. Chem., 1983, 57, 1745. [all data]
Compton, 1977
Compton, R.N.,
On the formation of positive and negative ions in gaseous UF6,
J. Chem. Phys., 1977, 66, 4478. [all data]
Beauchamp, 1976
Beauchamp, J.L.,
Ion cyclotron resonance studies of endothermic reactions of UF6-Generated by surface ionization,
J. Chem. Phys., 1976, 64, 929. [all data]
Pyatenko, Gusarov, et al., 1980
Pyatenko, A.T.; Gusarov, A.V.; Gorokhov, L.N.,
Thermochemical Properties of Negative Ions in Vapor over UF4,
High Temp., 1980, 18, 857. [all data]
Mallouk, Rosenthal, et al., 1984
Mallouk, T.E.; Rosenthal, G.L.; Muller, G.; Brusasco, R.; Bartlett, N.,
Fluoride ion affinities of GeF4 and BF4 from thermodynamic and structural data for (SF2)2GeF6, ClO2GeF5, and ClO2BF4,
Inorg. Chem., 1984, 23, 3167. [all data]
Annis and Stockdale, 1980
Annis, B.K.; Stockdale, J.A.D.,
Internal excitation of UF6- ions in collisions with argon atoms,
Chem. Phys. Lett., 1980, 74, 365. [all data]
Streit and Newton, 1980
Streit, G.E.; Newton, T.W.,
Negative ion-uranium hexafluoride charge transfer reactions,
J. Chem. Phys., 1980, 73, 3178. [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, 1977
Hildenbrand, D.L.,
Thermochemistry of gaseous UF5 and UF4,
J. Chem. Phys., 1977, 66, 4788. [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]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
AE Appearance energy EA Electron affinity - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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