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Bromine monoxide

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Gas phase ion energetics data

Go To: Top, Constants of diatomic molecules, References, Notes

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

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess

View reactions leading to BrO+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
2.3530 ± 0.0060LPESGilles, Polak, et al., 1992B
>1.53 ± 0.22R-AVogt, Dreves, et al., 1977Br- + O2 ->; B

Ionization energy determinations

IE (eV) Method Reference Comment
10.46 ± 0.02PIMonks, Stief, et al., 1993LL
10.29 ± 0.01PEDunlavey, Dyke, et al., 1978Vertical value; LLK

Constants of diatomic molecules

Go To: Top, Gas phase ion energetics data, References, Notes

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 79Br16O
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A (2Pi3/2) 27871 485.9 1 H 5.40 -0.074 2      A lrarrow X1 R 27725 1 H
Coleman and Gaydon, 1947; missing citation
X2 2Pi1/2 (900) 3           
X1 2Pi3/2 0 778.7 1 H 6.82  0.429598 4 0.003639  (0.523E-6)  1.7172 5 6  
Powell and Johnson, 1969; Amano, Yoshinaga, et al., 1972; Carrington, Dyer, et al., 1970; Brown, Byfleet, et al., 1972
EPR sp.
Carrington, Dyer, et al., 1970; Brown, Byfleet, et al., 1972

Notes

1Normal isotopic mixture. The vibrational numbering in neither A nor X1 is quite certain. In order to fit the absorption and the emission bands into the same vibrational scheme it was assumed Durie and Ramsay, 1958 that the longest-wavelength absorption band was 1-0 and that the v" numbering of the emission bands Coleman and Gaydon, 1947 had to be raised by four units.
2All A larrow X1 bands are diffuse on account of predissociation, though a few bands show evidence of rotational fine structure.
3A0= -815 from EPR sp. Carrington, Dyer, et al., 1970; estimate A0 = -980 Brown, Byfleet, et al., 1972.
4Effective constants.
5From the "true" Be = 0.4299 Amano, Yoshinaga, et al., 1972.
6Microwave sp. 8
7From the near-convergence of the absorption bands A larrowX1 assuming dissociation of A into Cl(2P3/2) + O(1D2); see Durie and Ramsay, 1958.
8muel(v=0)= 1.765 D Amano, Yoshinaga, et al., 1972; 1.61 D Carrington, Levy, et al., 1967, Byfleet, Carrington, et al., 1971 from Stark effect in the gas-phase EPR sp. Carrington, Levy, et al., 1967, Byfleet, Carrington, et al., 1971. For eqQ(79,81Br) and magnetic hyperfine parameters for both isotopes see Powell and Johnson, 1969, Carrington, Dyer, et al., 1970, Amano, Yoshinaga, et al., 1972, Brown, Byfleet, et al., 1972.

References

Go To: Top, Gas phase ion energetics data, 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.

Gilles, Polak, et al., 1992
Gilles, M.K.; Polak, M.L.; Lineberger, W.C., Photoelectron Spectroscopy of the Halogen Oxide Anions FO-, ClO-, BrO-, IO-, OClO-, and OIO-, J. Chem. Phys., 1992, 96, 11, 8012, https://doi.org/10.1063/1.462352 . [all data]

Vogt, Dreves, et al., 1977
Vogt, D.; Dreves, W.; Mischke, J., Energy dependence of differential cross sections in endoergic ion-molecule collision processes of negative ions, Int. J. Mass Spectrom. Ion Phys., 1977, 24, 285. [all data]

Monks, Stief, et al., 1993
Monks, P.S.; Stief, L.J.; Krauss, M.; Kuo, S.C.; Klemm, R.B., A discharge-flow photoionization mass-spectrometric study of the BrO(X 2) radical. Photoionization spectrum and ionization energy, Chem. Phys. Lett., 1993, 211, 416. [all data]

Dunlavey, Dyke, et al., 1978
Dunlavey, S.J.; Dyke, J.M.; Morris, A., The first ionization potential of the BrO(X2«pi»3/2) radical obtained using photoelectron spectroscopy, Chem. Phys. Lett., 1978, 53, 382. [all data]

Coleman and Gaydon, 1947
Coleman, E.H.; Gaydon, A.G., The radicals BrO and CBr in flames, Discuss. Faraday Soc., 1947, 2, 166. [all data]

Powell and Johnson, 1969
Powell, F.X.; Johnson, D.R., Microwave spectrum of the BrO free radical, J. Chem. Phys., 1969, 50, 4596. [all data]

Amano, Yoshinaga, et al., 1972
Amano, T.; Yoshinaga, A.; Hirota, E., Microwave spectrum of the BrO radical equilibrium structure and dipole moment, J. Mol. Spectrosc., 1972, 44, 594. [all data]

Carrington, Dyer, et al., 1970
Carrington, A.; Dyer, P.N.; Levy, D.H., Gas-phase electron resonance spectra of BrO and IO, J. Chem. Phys., 1970, 52, 309. [all data]

Brown, Byfleet, et al., 1972
Brown, J.M.; Byfleet, C.R.; Howard, B.J.; Russell, D.K., The electron resonance spectra of BrO, IO and SeF in J=5/2 rotational levels, Mol. Phys., 1972, 23, 457. [all data]

Durie and Ramsay, 1958
Durie, R.A.; Ramsay, D.A., Absorption spectra of the halogen monoxides, Can. J. Phys., 1958, 36, 35. [all data]

Carrington, Levy, et al., 1967
Carrington, A.; Levy, D.H.; Miller, T.A., Stark effect in gas-phase electron resonance. The dipole moments of ClO, BrO, SH, and 1«DELTA»SO, J. Chem. Phys., 1967, 47, 3801. [all data]

Byfleet, Carrington, et al., 1971
Byfleet, C.R.; Carrington, A.; Russell, D.K., Electric dipole moments of open-shell diatomic molecules, Mol. Phys., 1971, 20, 271. [all data]


Notes

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