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Xenon monofluoride


Constants of diatomic molecules

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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 by: K.P. Huber and G. Herzberg

Data collected through November, 1977

Symbols used in the table of constants
SymbolMeaning
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for (132)Xe19F
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
D (2Pi1/2) 38057 351 H 2.1        D lrarrow X 1 V 38118 H
Kuznetsova, Kuzyakov, et al., 1964; Brau and Ewing, 1975; Velazco, Kolts, et al., 1976; missing citation
B (2Pi1/2) 28826 (308.6) (Z) 1.52        B lrarrow X 2 3 V 28866
Kuznetsova, Kuzyakov, et al., 1964; missing citation; Brau and Ewing, 1975; Golde, 1975; Tellinghuisen, Tisone, et al., 1976; Velazco, Kolts, et al., 1976
C (2Pi3/2) (25550) (370) 4         C rarrow A (18600)
Ault and Andrews, 1976
A (2Pi3/2) 5  4        C larrow X (25620)
Ault and Andrews, 1976
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
X (2Sigma) 0 (234.2) 6 (Z) 12.0 7         
Morton and Falconer, 1963; Eachus and Symons, 1971

Notes

1Observed in emission in the reaction of metastable rare gas atoms with fluorine containing molecules Velazco, Kolts, et al., 1976, Velazco, Kolts, et al., 1977 and in electron-beam excited mixtures of Ar+Xe+F2 at high total pressure Brau and Ewing, 1975. Asorption in inert gas matrices at similar wavelengths Ault and Andrews, 1976. Laser-excited emission spectra in solid Ne and Ar Goodman and Brus, 1976; lifetimes of 12.5 and 11.5 ns, respectively, have been measured.
2Lifetime tau ~ 18.8 ns Burnham and Harris, 1977; Goodman and Brus, 1976 measure tau= ~ 6 ns Goodman and Brus, 1976 in solid Ar.
3Observed in emission at low pressure in the reaction of metastable (3P2) Xe atoms with F2, NOF, N2F4, CF3OF [flowing afterglow Velazco and Setser, 1975, Golde, 1975] and at high pressure (of the order XeF of 1 atm) on electron bombardment of mixtures of Ar, Xe, and F2 or NF3 Ault, Bradford, et al., 1975, Brau and Ewing, 1975, Tellinghuisen, Tisone, et al., 1976; two bands (0-3 and 1-4 according to the new v" numbering) at 3532 and 3511 Å show strong laser action Ault, Bradford, et al., 1975, Brau and Ewing, 1975, 2, Tellinghuisen, Tisone, et al., 1976. Also observed in fluorescence in the photolysis of XeF2 Brashears, Setser, et al., 1977. In emission and absorption in inert gas matrices Ault and Andrews, 1976, Goodman and Brus, 1976.
4Tentative interpretation Ault and Andrews, 1976 of observations in solid argon.
5Unstable
6The v" numbering in Tellinghuisen, Tisone, et al., 1976 has been changed in a "note added in proof". See also Velazco, Kolts, et al., 1977. Emission spectra in a neon matrix Goodman and Brus, 1976 give omega"e = 247 Goodman and Brus, 1976, omega"ex"e = 10.2 Goodman and Brus, 1976.
7ESR sp. 10
8From Tellinghuisen, Tisone, et al., 1976 after correction for change in the v numbering of the ground state. Extensive ab initio calculations Liskow, Schaefer, et al., 1973 suggested an essentially repulsive potential for X 2Sigma; much better agreement with the spectroscopic result is obtained Krauss and Liu, 1976 if, in addition, the contribution to binding from the dispersion interaction is taken into account.
9D00(XeF) + I.P.(Xe) - D00(XeF+).
10In gamma-irradiated solid XeF4 and XeF2 Morton and Falconer, 1963, Eachus and Symons, 1971.

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Kuznetsova, Kuzyakov, et al., 1964
Kuznetsova, L.A.; Kuzyakov, Yu.Ya.; Shpanskii, V.A.; Khutoretskii, V.M., Emission spectra of XeF and XeF2 molecules, Vestn. Mosk. Univ., 1964, 19, 19-21. [all data]

Brau and Ewing, 1975
Brau, C.A.; Ewing, J.J., Emission spectra of XeBr, XeCl, XeF, and KrF, J. Chem. Phys., 1975, 63, 4640. [all data]

Velazco, Kolts, et al., 1976
Velazco, J.E.; Kolts, J.H.; Setser, D.W., Quenching rate constants for metastable argon, krypton, and xenon atoms by fluorine containing molecules and branching for XeF and KrF formation, J. Chem. Phys., 1976, 65, 3468. [all data]

Golde, 1975
Golde, M.F., Interpretation of the oscillatory spectra of the inert-gas halides, J. Mol. Spectrosc., 1975, 58, 261. [all data]

Tellinghuisen, Tisone, et al., 1976
Tellinghuisen, J.; Tisone, G.C.; Hoffman, J.M.; Hays, A.K., Analysis of spontaneous and laser emission from XeF, J. Chem. Phys., 1976, 64, 4796. [all data]

Ault and Andrews, 1976
Ault, B.S.; Andrews, L., Absorption and emission spectra of argon matrix-isolated XeF and KrF, J. Chem. Phys., 1976, 64, 3075. [all data]

Morton and Falconer, 1963
Morton, J.R.; Falconer, W.E., Electron spin resonance spectrum of XeF in «gamma»-irradiated xenon tetrafluoride, J. Chem. Phys., 1963, 39, 427. [all data]

Eachus and Symons, 1971
Eachus, R.S.; Symons, M.C.R., Unstable intermediates. Part LXXXIV. E.s.r. study of the radical XeF in «gamma»-irradiated XeF2, J. Chem. Soc. A, 1971, 304. [all data]

Velazco, Kolts, et al., 1977
Velazco, J.E.; Kolts, J.H.; Setser, D.W.; Coxon, J.A., Excitation of XeF* by reactions of XeF2 with Ar(3P0,2), Kr(3P2) and Xe(3P2), Chem. Phys. Lett., 1977, 46, 99. [all data]

Goodman and Brus, 1976
Goodman, J.; Brus, L.E., Ground X2«SIGMA»+ state potential well, and excited state dynamics of diatomic XeF in solid Ne and Ar, J. Chem. Phys., 1976, 65, 3808. [all data]

Burnham and Harris, 1977
Burnham, R.; Harris, N.W., Radiative lifetime of the C state of XeF, J. Chem. Phys., 1977, 66, 2742. [all data]

Velazco and Setser, 1975
Velazco, J.E.; Setser, D.W., Bound-free emission spectra of diatomic xenon halides, J. Chem. Phys., 1975, 62, 1990. [all data]

Ault, Bradford, et al., 1975
Ault, E.R.; Bradford, R.S., Jr.; Bhaumik, M.L., High-power xenon fluoride laser, Appl. Phys. Lett., 1975, 27, 413. [all data]

Brau and Ewing, 1975, 2
Brau, C.A.; Ewing, J.J., 354-nm laser action on XeF, Appl. Phys. Lett., 1975, 27, 435. [all data]

Brashears, Setser, et al., 1977
Brashears, H.C., Jr.; Setser, D.W.; Desmarteau, D., Vacuum-ultraviolet photolysis of XeF2: XeF(B) fluorescence and quenching, Chem. Phys. Lett., 1977, 48, 84. [all data]

Liskow, Schaefer, et al., 1973
Liskow, D.H.; Schaefer, H.F., III; Bagus, P.S.; Liu, B., Probable nonexistence of xenon monofluoride as a chemically bound species in the gas phase, J. Am. Chem. Soc., 1973, 95, 4056. [all data]

Krauss and Liu, 1976
Krauss, M.; Liu, B., The energy curve of XeF, X2«SIGMA»+, Chem. Phys. Lett., 1976, 44, 257. [all data]


Notes

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