Selenium monotelluride


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: Klaus P. Huber and Gerhard H. 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 128Te78Se
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
Unclassified absorption bands 43900 - 46500 cm-1.
Joshi and Sharma, 1967
D2 42232.3 353.3 H 1.0        D2 ← X2 V 40703.0 HQ
missing citation; Ahmed, Barrow, et al., 1975
D1 42168.4 355.6 H 1.0        D1 ← X1 V 42188.0 HQ
missing citation; Ahmed, Barrow, et al., 1975
C 1 1          C → X2 22490
Ahmed, Barrow, et al., 1975
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
B2 1 23596 1 [191.5]   [0.048]     [2.69] B2 → X2 21986
Ahmed, Barrow, et al., 1975
B1 0+ 23393 1 [189]   0.0497     2.647 B1 → X2 21781
Ahmed, Barrow, et al., 1975
           B1 → X1 23329.1
Ahmed, Barrow, et al., 1975
A 0+ 1          A → X1 22052
Ahmed, Barrow, et al., 1975
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
X2 1 1547.2 2 317.39 3 0.7175  (0.0619) 4     (2.372)  
X1 0+ 0 316.24 3 0.738  (0.0619) 4 (0.00018)  (0.095E-7)  (2.372)  

Notes

1All constants for these states are derived from laser-excited fluorescence spectra. In carrying out the analysis it was necessary to assume the value of the rotational constant Be for the ground state Ahmed, Barrow, et al., 1975, see 4.
2From the B1 → X1 and B1 → X2 flourescence series.
3Combined results from fluorescence and absorption spectra.
4Estimated value Ahmed, Barrow, et al., 1975 assuming re (TeSe) ~ 1/2[re(Te2)+re(Se2)].
5Thermochemical value (mass-spectrometry) Porter and Spencer, 1960, corrected for new values of D00(Se2) and D00(Te2).
6The band structure is somewhat diffuse suggesting predissociation Joshi and Sharma, 1967, Ahmed, Barrow, et al., 1975.

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.

Joshi and Sharma, 1967
Joshi, M.M.; Sharma, D., The ultra-violet absorption spectrum of TeSe, Proc. Phys. Soc. London, 1967, 90, 1159. [all data]

Ahmed, Barrow, et al., 1975
Ahmed, F.; Barrow, R.F.; Yee, K.K., Fluorescence and absorption spectra of gaseous TeSe, J. Phys. B:, 1975, 8, 649. [all data]

Porter and Spencer, 1960
Porter, R.F.; Spencer, C.W., Stabilities of the gaseous molecules, BiSe, BiTe, and SbTe, J. Chem. Phys., 1960, 32, 943. [all data]


Notes

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