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Lanthanum monofluoride


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 by: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to FLa+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference
6.3 ± 0.3EIZmbov and Margrave, 1968

Constants of diatomic molecules

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: Klaus P. Huber and Gerhard H. Herzberg

Data collected through February, 1975

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 139La19F
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
EmissionEmission spectra attributed to LaF: three systems of V shaded bands (P and Q heads)
nue = 30188.9, omega'e = 674.7, omega'ex'e = 2.35, omega"e = 603.8, omega"ex"e = 1.96
Shenyavskaya, Gurvich, et al., 1968
nue = 30076.4, omega'e = 682.4, omega'ex'e = 2.28, omega"e = 607.1, omega"ex"e = 1.88
Shenyavskaya, Gurvich, et al., 1965
nue = 28468, omega'e = 657, omega'ex'e = 1.1, omega"e = 607, omega"ex"e = 1.8
Shenyavskaya, Gurvich, et al., 1965
one system of R shaded bands in the region 27500 - 28200 cm-1.
Shenyavskaya, Gurvich, et al., 1965
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
e 3Phi4     [0.2302]   [1.7E-7]  [2.098] e larrow a R 22340.20 Z
Barrow, Lee, et al., 1970
e 3Phi3     [0.2294]   [2.0E-7]  [2.098] e larrow a R 22149.20 Z
Barrow, Lee, et al., 1970
e 3Phi2     [0.2277]   [1.7E-7]  [2.098] e larrow a R 21834.46 Z
Barrow, Lee, et al., 1970
d 3Phi4  [483]   [0.2336]   [2.2E-7]  [2.082] d larrow a R 18809.40 Z
Barrow, Lee, et al., 1970; Hauge, 1970
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
d 3Phi3  [473.2]   [0.2321]   [2.3E-7]  [2.082] d larrow a R 18519.90 Z
Barrow, Lee, et al., 1970; Hauge, 1970
d 3Phi2  [484.6]   [0.2322]   [1.9E-7]  [2.082] d larrow a R 18295.80 Z
Barrow, Lee, et al., 1970; Hauge, 1970
c2 3Delta2     [0.2191]   [1.9E-7]  [2.146] c2 larrow a2 R 13597.27 Z
Barrow, Bastin, et al., 1967; Barrow, Lee, et al., 1970
c1 3Delta1     [0.2189]   [2.0E-7]  [2.147] c1 larrow a1 R 13567.00 Z
Barrow, Bastin, et al., 1967; Barrow, Lee, et al., 1970
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
b2 3Delta2     [0.2216]   [2.9E-7]  [2.133] b2 larrow a2 R 13316.35 Z
Barrow, Lee, et al., 1970
a3 3Delta3 1 [537]   [0.23875]   [1.87E-7]  2.0548  
a2 3Delta2 1 [537.65]   0.23902 0.00121  [1.88E-7]  2.0548  
a1 3Delta1 1 [537.14]   0.23831 0.00120  [1.79E-7]  2.0548  
E 1Sigma+  [(421)]   [0.229] 2     [2.10] E larrow X R 22574.22 H
Barrow, Lee, et al., 1970
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
D 1Sigma+     [0.242] 2     [2.04] D larrow X R 22485.35 H
Barrow, Lee, et al., 1970
C 1Pi  [549]   [0.23745] 3   [1.65E-7]  [2.0611] C larrow X R 20959.83 Z
Barrow, Lee, et al., 1970; Hauge, 1970
B 1Pi  [474]   [0.22936] 3   [2.7E-7]  [2.0971] B larrow X R 16184.00 Z
Barrow, Lee, et al., 1970; Hauge, 1970
A 1Sigma+  [489.4] Z   0.2278 0.0011  [2.1E-7]  2.104 A larrow X R 11661.9 Z
Barrow, Bastin, et al., 1967; Barrow, Lee, et al., 1970
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
X 1Sigma+ 0 1 [570]   [0.24562]   [1.78E-7]  [2.0265]  

Notes

1Not certain whether X 1Sigma or a 3Delta the ground state.
2Strong interaction between the two 1Sigma states.
3Lambda-type doubling.

References

Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, Notes

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

Zmbov and Margrave, 1968
Zmbov, K.F.; Margrave, J.L., Mass spectrometric studies of scandium, yttrium, lanthanum, and rare-earth fluorides, Advan. Chem. Ser., 1968, 72, 267. [all data]

Shenyavskaya, Gurvich, et al., 1968
Shenyavskaya, E.A.; Gurvich, L.V.; Maltsev, A.A., On a band system in the discharge spectrum in lanthanum trifluorode vapors, Opt. Spectrosc. Engl. Transl., 1968, 24, 556, In original 1025. [all data]

Shenyavskaya, Gurvich, et al., 1965
Shenyavskaya, E.A.; Gurvich, L.V.; Maltsev, A.A., Electron spectra of the LaF molecule, Vestn. Mosk. Univ., 1965, 20, 10. [all data]

Barrow, Lee, et al., 1970
Barrow; Lee; Partridge, Unpublished quoted in Rosen, 1970 cited in Huber and Herzberg, 1979, 1970, 371. [all data]

Hauge, 1970
Hauge, Unpublished quoted in Rosen, 1970 cited in Huber and Herzberg, 1979, 1970, 371. [all data]

Barrow, Bastin, et al., 1967
Barrow, R.F.; Bastin, M.W.; Moore, D.L.G.; Pott, C.J., Electronic states of gaseous fluorides of scandium, yttrium and lanthanum, Nature (London), 1967, 215, 1072. [all data]

Rosen, 1970
Rosen, B., International tables of selected constants. 17. Spectroscopic data relative to diatomic molecules, Pub. Pergamon Press, Oxford, 1970, 0. [all data]

Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G., Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules, Van Nostrand Reinhold Company, New York, 1979, 716. [all data]


Notes

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