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BrSi+


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 September, 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 (28)Si79Br+
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A 29005.4 428.7 H 6.9        A rarrow X 1 R 28950.5 H
Kuznetsova, Kuzmenko, et al., 1968
X 0 535.8 H 1.6         

Notes

1Br isotope shifts clearly observed.
2Only two bands; it is not certain that they belong to the same system.
3It is possible that the v'=1 progression is in fact a separate system D' larrow X.
4Vibrational numbering uncertain.
5Emission bands with v' > 2 have not been observed.
6 Kuznetsova and Kuzyakov, 1969 report the following rotational constants for the B-X bands: B'0 = 0.1771 Kuznetsova and Kuzyakov, 1969, B"0(2Pi1/2) = 0.1598 Kuznetsova and Kuzyakov, 1969. See also Mishra and Khanna, 1972 who give considerably different results.
7From Kuznetsova, Kuz'menko, et al., 1968; Jevons and Bashford, 1937 prefer a doublet separation of 418.0 cm-1 leading to slightly different constants.

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, Kuzmenko, et al., 1968
Kuznetsova, L.A.; Kuzmenko, N.E.; Kuzyakov, Y.Y., Emission spectrum of the SiBr+ molecule, Opt. Spectrosc., 1968, 24, 434, In original 812. [all data]

Kuznetsova and Kuzyakov, 1969
Kuznetsova, L.A.; Kuzyakov, Yu.Ya., Rotational analysis of the 2«SIGMA»-2«PI» band system of the spectrum of the SiBr molecule, Moscow Univ. Chem. Bull. Engl. Transl., 1969, 24, 74, In original 103. [all data]

Mishra and Khanna, 1972
Mishra, R.K.; Khanna, B.N., Emission spectrum of the SiBr molecule, Indian J. Phys., 1972, 46, 1. [all data]

Kuznetsova, Kuz'menko, et al., 1968
Kuznetsova, L.A.; Kuz'menko, N.E.; Kuzyakov, Yu.Ya., Analysis of the vibrational structure of the SiBr emission spectrum, Moscow Univ. Chem. Bull. Engl. Transl., 1968, 23, 18, In original 30. [all data]

Jevons and Bashford, 1937
Jevons, W.; Bashford, L.A., Ultra-violet band systems of SnBr and SiBr, Proc. Phys. Soc. London, 1937, 49, 554. [all data]


Notes

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