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Uranium hexafluoride

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Gas phase ion energetics data

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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 - S.G. Lias, R.D. Levin, and S.A. Kafafi
RDSH - H.M. Rosenstock, K. Draxl, B.W. Steiner, and J.T. Herron
B - J.E. Bartmess

Electron affinity determinations

EA (eV) Method Reference Comment
5.06 ± 0.20R-ABorshchevskii, Boltalina, et al., 1988value altered from reference due to conversion from electron convention to ion convention; B
5.51 ± 0.31R-APyatenko, Guasarov, et al., 1984Critical review; value altered from reference due to conversion from electron convention to ion convention; B
5.13 ± 0.31R-ASkokan, Sorokin, et al., 1983Fluoride Affinity: 13.1±2 kcal > UF4; value altered from reference due to conversion from electron convention to ion convention; B
>5.099621NBIECompton, 1977B
4.90 ± 0.50IMRBBeauchamp, 1976Endo F- transfer to BF3 at 1.5 eV observed; B
6.33 ± 0.50TDEqPyatenko, Gusarov, et al., 1980B
5.98 ± 0.43R-AMallouk, Rosenthal, et al., 1984B
>5.499959IMRBAnnis and Stockdale, 1980B
>3.6079IMRBStreit and Newton, 1980B
>4.30 ± 0.40NBIEMathur, Rothe, et al., 1977B
2.90973SIPage and Goode, 1969The Magnetron method, lacking mass analysis, is not considered reliable.; B

Ionization energy determinations

IE (eV) Method Reference Comment
14.00 ± 0.10EIHildenbrand, 1977LLK
14.14PEPotts, Lempka, et al., 1970Vertical value; RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
F4U+17.4 ± 0.12FEIHildenbrand, 1977LLK
F5U+14.24 ± 0.10FEIHildenbrand, 1977LLK

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: T. Shimanouchi

Symmetry:   Oh     Symmetry Number sigma = 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(2«nu»6)

Source: Shimanouchi, 1972

Notes

VSVery strong
WWeak
iaInactive
OCFrequency estimated from an overtone or a combination tone indicated in the parentheses.
B1~3 cm-1 uncertainty
C3~6 cm-1 uncertainty
E15~30 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

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