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Boron monoxide


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 June, 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 11B16O
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
C 2Pi(r) 55346.1 1 1315.3 H 11.1  1.483 0.018  0.000008  1.320 C rarrow X R 55O61.5 2
missing citation; Kuzyakov, Tetevskiy, et al., 1960; missing citation
B 2Sigma+ 43174.05 1281.69 Z 10.66  1.5171 3 4 0.0210  0.0000085  1.3054 B rarrow A 5 V 19225.9
Mulliken, 1925
           B rarrow A 5 V 19351.0
Mulliken, 1925
           B rarrow X 6 R 42872.34 Z
missing citation; missing citation; Funke and Simons, 1935; missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A 2Pii 23958.76 7 1260.70 Z 11.157 8 0.049 [1.4018] 94 0.0196  [0.00000763]  1.3533 A lrarrow X 10 R 23646.43 8 Z
missing citation; missing citation; missing citation; missing citation; Thrush, 1960; Dunn and Hanson, 1969
23833.7          A lrarrow X 10 R 23521.3 8 Z
missing citation; missing citation; missing citation; missing citation; Thrush, 1960; Dunn and Hanson, 1969
X 2Sigma+ 0 1885.69 Z 11.81  1.7820 11 4 0.0166  0.00000632 12 0.00000002 1.2045 13  

Notes

1A= (+)46.4.
2R2 head at 55084.2 cm-1.
3Spin splitting constant gamma ~ +0.025 Lagerqvist, Nilsson, et al., 1958, Dunn and Hanson, 1969.
4Potential curves Singh and Rai, 1965.
5Franck-Condon factors Nicholls, Fraser, et al., 1959.
6Franck-Condon factors Nicholls, Fraser, et al., 1959, Robinson and Nicholls, 1960, Liszt and Smith, 1971; measured relative intensities Robinson and Nicholls, 1960.
7A0= -122.26 Dunn and Hanson, 1969 (slight J dependence); A1 = -122.36 Jenkins and McKellar, 1932.
8{J'=0} relative to N"=0.
9Lambda-type doubling Deltavfe (2Pi1/2) ~ +0.025(J+1/2) - ... Jenkins and McKellar, 1932, Dunn and Hanson, 1969; for 2Pi3/2 see Jenkins and McKellar, 1932.
10Franck-Condon factors Nicholls, Fraser, et al., 1959, Nicholls, Fraser, et al., 1960, Robinson and Nicholls, 1960, Liszt and Smith, 1971; measured relative Robinson and Nicholls, 1960 and estimated absolute Kuz'menko, Kuznetsova, et al., 1974 intensities,
11From Lagerqvist, Nilsson, et al., 1958; slightly different constants in Jenkins and McKellar, 1932. Spin splitting constant gamma(v=2) = +0.0065 Dunn and Hanson, 1969.
12missing note
13ESR sp. 15
14Thermochemical value (mass-spectrom.) Coppens, Smoes, et al., 1968, Uy and Drowart, 1970; in good agreement with 8.3 eV by flame photometry De Galan, 1965.
15In rare gas matrices at 4 K Knight, Easley, et al., 1971.
16From the heat of formation for BO- missing citation.

References

Go To: Top, Constants of diatomic molecules, Notes

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

Kuzyakov, Tetevskiy, et al., 1960
Kuzyakov, Yu.Ya.; Tetevskiy, V.M.; Tunitsky, L.N., Rotational analysis of boron monoxide bands located in the vacuum ultraviolet, Opt. Spectrosc. Engl. Transl., 1960, 9, 84. [all data]

Mulliken, 1925
Mulliken, R.S., The isotope effect in band spectra, II: the spectrum of boron monoxide, Phys. Rev., 1925, 25, 259. [all data]

Funke and Simons, 1935
Funke, V.J.; Simons, C.F.E., Uber die «beta»-banden des bormonoxydes, Proc. K. Akad. Wet. Amsterdam, 1935, 38, 142. [all data]

Thrush, 1960
Thrush, B.A., Absorption spectra of diatomic radicals containing boron or silicon, Nature (London), 1960, 186, 1044. [all data]

Dunn and Hanson, 1969
Dunn, T.M.; Hanson, L.K., Rotational analysis of the 0,2 band of the 11BO «alpha» system, Can. J. Phys., 1969, 47, 1657. [all data]

Lagerqvist, Nilsson, et al., 1958
Lagerqvist, A.; Nilsson, N.E.L.; Wigartz, K., Rotational analysis of the «beta»-system of BO, Ark. Fys., 1958, 13, 379. [all data]

Singh and Rai, 1965
Singh, R.B.; Rai, D.K., Internuclear potential curves for BO, IO and ClO, J. Quant. Spectrosc. Radiat. Transfer, 1965, 5, 723. [all data]

Nicholls, Fraser, et al., 1959
Nicholls, R.W.; Fraser, P.A.; Jarmain, W.R., Transition probability parameters of molecular spectra arising from combustion processes, Combust. Flame, 1959, 3, 13. [all data]

Robinson and Nicholls, 1960
Robinson, D.; Nicholls, R.W., Intensity measurements on the CO+ comet tail, and the BO «alpha» and «beta» molecular band systems, Proc. Phys. Soc. London, 1960, 75, 817. [all data]

Liszt and Smith, 1971
Liszt, H.S.; Smith, Wm.H., RKR Franck-Condon factors for blue and ultraviolet transitions of some metal oxides, J. Quant. Spectrosc. Radiat. Transfer, 1971, 11, 1043. [all data]

Jenkins and McKellar, 1932
Jenkins, F.A.; McKellar, A., Mass ratio of the boron isotopes from the spectrum of BO, Phys. Rev., 1932, 42, 464. [all data]

Nicholls, Fraser, et al., 1960
Nicholls, R.W.; Fraser, P.A.; Jarmain, W.R.; McEachran, R.P., Vibrational transition probabilities of diatomic molecules: collected results. IV. BeO, BO, CH+, CO, NO, SH, O2, O2+, Astrophys. J., 1960, 131, 399. [all data]

Kuz'menko, Kuznetsova, et al., 1974
Kuz'menko, N.E.; Kuznetsova, L.A.; Kuzyakov, Yu.Ya.; Chuev, B.N., Determination of the square of the matrix element for the dipole moment of the electronic transition A2«PI»-X2«SIGMA» of the BO molecule, J. Appl. Spectrosc. Engl. Transl., 1974, 20, 373, In original 491. [all data]

Coppens, Smoes, et al., 1968
Coppens, P.; Smoes, S.; Drowart, J., Mass spectrometric determination of the dissociation energy of the molecule BO, Trans. Faraday Soc., 1968, 64, 630. [all data]

Uy and Drowart, 1970
Uy, O.M.; Drowart, J., Mass spectrometric determination of the dissociation energies of the boron monochalcogenides, High Temp. Sci., 1970, 2, 293. [all data]

De Galan, 1965
De Galan, L., An experimental value for the dissociation energy of boron oxide, Physica (Amsterdam), 1965, 31, 1286. [all data]

Knight, Easley, et al., 1971
Knight, L.B., Jr.; Easley, W.C.; Weltner, W., Jr., ESR of the BO molecule in inert matrices: a case of extreme preferential orientation, J. Chem. Phys., 1971, 54, 1610. [all data]


Notes

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