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Barium monoiodide


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, 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)Ba127I
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
Additional emission bands in the region 22300-23300 cm-1: nue=23224.8,22664.7 omegae'=173.0,171.0 omegae'xe'=0.50,0.50 omegae"=177.0,177.0 omegae"xe"=0.60,0.65
Shah, Patel, et al., 1972
E (2Sigma+) 26753 176.0 1 H 0.30        E lrarrow X V 26765 H
Rosen, 1970; Patel and Shah, 1970; missing citation
D (2Sigma+) 25764 161.1 1 H 0.26        D lrarrow X 1 V 25769 H
Rosen, 1970; Patel and Shah, 1970; missing citation
C (2Pi) 18569  0.275        C lrarrow X 2 VR 18568 H
Walters and Barratt, 1928; Mesnage, 1939; Rosen, 1970; Patel and Shah, 1970; Dagdigian, Cruse, et al., 1976
17814 150.05 $cH 0.275        C lrarrow X 2 VR 17813 H
Walters and Barratt, 1928; Mesnage, 1939; Rosen, 1970; Patel and Shah, 1970; Dagdigian, Cruse, et al., 1976
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
B (2Sigma) 10417 3          B rarrow X 
Bradford, Jones, et al., 1975
A (2Pi) 9921 3          A rarrow X 
Bradford, Jones, et al., 1975
9268 3           
Bradford, Jones, et al., 1975
X (2Sigma+) 0 152.30 4 H 0.270         

Notes

1Vibrational constants from Rosen, 1970. Similar results in Patel and Shah, 1970. A different analysis of the D-X system has been suggested Reddy and Rao, 1970, placing the 0-0 band at 26101 cm-1, and resulting in increased upper and lower state vibrational constants.
2Radiative lifetime tau = 16.5 ns Dagdigian, Cruse, et al., 1974.
3missing note
4Vibrationa1 constants recalculated by Dagdigian, Cruse, et al., 1976 from unpublished data of M. M. Patel; for the upper state there is only moderate agreement with the constants in Rosen, 1970.
5From the Ba + I2 chemiluminescence spectrum, see Dickson, Kinney, et al., 1976. Lower bounds were earlier predicted by Krasnov and Karaseva, 1965 and Mims, Lin, et al., 1972.
6Preliminary data, no details.

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.

Shah, Patel, et al., 1972
Shah, S.G.; Patel, M.M.; Darji, A.B., A new band system of molecular BaI in the region «lambda» 4300-«lambda» 4500 Å, J. Phys. B:, 1972, 5, 191. [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]

Patel and Shah, 1970
Patel, M.M.; Shah, N.R., Emission spectrum of BaI molecule, Indian J. Pure Appl. Phys., 1970, 8, 681. [all data]

Walters and Barratt, 1928
Walters, O.H.; Barratt, S., The alkaline earth halide spectra and their origin, Proc. R. Soc. London A, 1928, 118, 120. [all data]

Mesnage, 1939
Mesnage, P., Recherches sur les decharges de haute frequence et leur application a la spectroscopie moleculaire, Ann. Phys. (Paris), 1939, 12, 5. [all data]

Dagdigian, Cruse, et al., 1976
Dagdigian, P.J.; Cruse, H.W.; Zare, R.N., Vibrational state analysis of unrelaxed BaI from the reactions Ba + CH3I and Ba + CH2I2, Chem. Phys., 1976, 15, 249. [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]

Reddy and Rao, 1970
Reddy, B.R.K.; Rao, P.T., The emission spectrum of barium monoiodide in the ultraviolet, J. Phys. B:, 1970, 3, 1008-1010. [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]

Dickson, Kinney, et al., 1976
Dickson, C.R.; Kinney, J.B.; Zare, R.N., Determination of D0o (BaI) from the chemiluminescent reaction Ba + I2, Chem. Phys., 1976, 15, 243. [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]

Mims, Lin, et al., 1972
Mims, C.A.; Lin, S.-M.; Herm, R.R., Crossed beam collision mechanics: reactions of Ca, Sr, and Ba with HI and limits on D0° for CaI, SrI, and BaI, J. Chem. Phys., 1972, 57, 3099. [all data]


Notes

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