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Barium monobromide


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 February, 1976

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 (138)Ba79Br
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
E 2Sigma+ 26865.9 219.9 H 0.35        E lrarrow X V 26878.9 H
Harrington, 1942; Bradford, Jones, et al., 1975; Joshi and Gopal, 1975
D 2Sigma+ 25670.9 209.1 H 0.53        D lrarrow X V 25678.5 H
Harrington, 1942; Bradford, Jones, et al., 1975; Joshi and Gopal, 1975
C 2Pi 19192.5 197.4 H 0.41        C lrarrow X 1 R 19194.3 H
Hedfeld, 1931; Harrington, 1942; Bradford, Jones, et al., 1975; Joshi and Gopal, 1975
18650.9 197.4 H 0.41        C lrarrow X 1 R 18652.7 H
Hedfeld, 1931; Harrington, 1942; Bradford, Jones, et al., 1975; Joshi and Gopal, 1975
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
B (2Sigma+) 11325          B rarrow X 
Bradford, Jones, et al., 1975
A (2Pi) 10604 2          A rarrow X 
Bradford, Jones, et al., 1975
9980 2          A rarrow X 
Bradford, Jones, et al., 1975
X 2Sigma+ 0 193.8 H 0.42         

Notes

1Radiative lifetime for the upper component of C 2Pi is tau(v=8)= 16.5 ns Dagdigian, Cruse, et al., 1974 and for the lower component of C 2Pi is tau(v=4)= 17.9 ns Dagdigian, Cruse, et al., 1974. A shorter lifetime of tau= 8 ns Capelle, Bradford, et al., 1973 by Capelle, Bradford, et al., 1973.
2Preliminary data, no details.
3Thermochemical value (flame photometry) Gurvich, Ryabova, et al., 1973. In agreement with a theoretical lower limit of 3.76 eV Krasnov and Karaseva, 1965.

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.

Harrington, 1942
Harrington, Dissertation, University of California, California, 1942, 0. [all data]

Bradford, Jones, et al., 1975
Bradford, R.S., Jr.; Jones, C.R.; Southall, L.A.; Broida, H.P., Production efficiencies of electronically excited states of barium monohalides, J. Chem. Phys., 1975, 62, 2060. [all data]

Joshi and Gopal, 1975
Joshi, M.M.; Gopal, R., The C(2«PI») --> X(2«SIGMA»+) transition in thermal emission spectra of the diatomic alkaline earth bromides, Pramana, 1975, 4, 276. [all data]

Hedfeld, 1931
Hedfeld, K., Die bandenspektren der erdalkalihalogene, Z. Phys., 1931, 68, 610. [all data]

Dagdigian, Cruse, et al., 1974
Dagdigian, P.J.; Cruse, H.W.; Zare, R.N., Radiative lifetimes of the alkaline earth monohalides, J. Chem. Phys., 1974, 60, 2330. [all data]

Capelle, Bradford, et al., 1973
Capelle, G.A.; Bradford, R.S.; Broida, H.P., Chemiluminescence and laser photoluminescence of some diatomic metal halides, Chem. Phys. Lett., 1973, 21, 418. [all data]

Gurvich, Ryabova, et al., 1973
Gurvich, L.V.; Ryabova, V.G.; Khitrov, A.N., Determination of dissociation energies of alkaline-earth chlorides, bromides and hydroxides by flame photometry, Faraday Symp. Chem. Soc., 1973, 8, 83. [all data]

Krasnov and Karaseva, 1965
Krasnov, K.S.; Karaseva, N.V., Reevaluation of the spectroscopic dissociation energies of subhalides of the IIa group, Opt. Spectrosc. Engl. Transl., 1965, 19, 14, In original 30. [all data]


Notes

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