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Selenium monosulfide

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 July, 1977

Symbols used in the table of constants
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 78Se32S
B2 3Sigma-1 (28330) [327.56] 1  [0.1349] 2    [2.348] B2 larrow X2 R 28011
Ahmed and Barrow, 1974
B1 3Sigma-0+ 28248.2 [330.82] 3 Z (2.92)  0.1369 4 0.00121    2.331 B1 larrow X1 R 28138.46 Z
Ahmed and Barrow, 1974
A 0+ 27328.4 332.1 3 5 (2.66)  0.1186 4 5 0.00095    2.504 A larrow X1 R 27216.5 (Z)
Ahmed and Barrow, 1974
X2 3Sigma-1 205 6 556.26 Z 1.831  0.18121 7 0.00089  7E-8  2.0257  
X1 3Sigma-0+ 0 555.56 3 Z 1.848  0.17926 0.00076  6E-8  2.0367  


1DeltaG(3/2) = 328.95; see 2.
2B1 = 0.1305, B2 = 0.123. Extensive perturbations by states having Omega = 1 or 2.
3Vibrational numbering confirmed by isotope studies.
4Strong mutual perturbations between B and A as well as other perturbations in B.
5Only v'=3 and 4 have been analyzed, DeltaG(7/2) = 310.79.
6Estimated from the magnitude of the Omega-type doubling; see 7.
7Be(F3) - Be(F2) = +0.00063.
8Estimate based on a Birge-Sponer extrapolation of the ground state vibrational levels Ahmed and Barrow, 1974; see also Drowart and Goldfinger, 1966.


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

Ahmed and Barrow, 1974
Ahmed, F.; Barrow, R.F., Rotational analysis of absorption bands of gaseous SeS, J. Phys. B:, 1974, 7, 2256. [all data]

Drowart and Goldfinger, 1966
Drowart, J.; Goldfinger, P., The dissociation energies of the group VIA diatomic molecules, Q. Rev. Chem. Soc., 1966, 20, 545. [all data]


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