Gallium monobromide
- Formula: BrGa
- Molecular weight: 149.627
- CAS Registry Number: 22655-59-0
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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, 1976
| Symbol | Meaning |
|---|---|
| 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) |
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C 1Π | (36000) 1 | C ← X | 37310 2 | |||||||||
| ↳Miescher and Wehrli, 1933 | ||||||||||||
| B 3Π1 | 28532.0 | 271.6 3 H | 2.50 | B ↔ X V | 28535.9 H | |||||||
| ↳Miescher and Wehrli, 1933; missing citation | ||||||||||||
| A 3Π0+ | 28161.8 | 272.2 3 H | 2.53 | A ↔ X V | 28166.0 H | |||||||
| ↳Miescher and Wehrli, 1933; missing citation | ||||||||||||
| X 1Σ+ | 0 | 263.0 3 H | 0.81 | 0.0818393 | 0.0003207 | (3.2E-9) 4 | 2.35248 | |||||
| ↳Barrett and Mandel, 1958 | ||||||||||||
Notes
| 1 | Diffuse absorption bands (fluctuation b.) indicating a shallow upper state potential curve. |
| 2 | Vertical transition. |
| 3 | Analysis of Miescher and Wehrli, 1933. Savithry, Rao, et al., 1974 revised some of the vibrational assignments and gave constants for 69Ga79Br. |
| 4 | Calculated from 4Be3/ωe2. |
| 5 | Limit from the analysis of the fluctuation bands, and extrapolation of vibrational levels in 3Π0+ and 3Π1; for correlation with atomic products see Barrow, 1960. Flame photometry Bulewicz, Phillips, et al., 1961 gives 4.45 eV. |
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.
Miescher and Wehrli, 1933
Miescher, E.; Wehrli, M.,
Die spektren der galliumhalogenide,
Helv. Phys. Acta, 1933, 6, 458. [all data]
Barrett and Mandel, 1958
Barrett, A.H.; Mandel, M.,
Microwave spectra of the Tl, In, and Ga monohalides,
Phys. Rev., 1958, 109, 1572. [all data]
Savithry, Rao, et al., 1974
Savithry, T.; Rao, D.V.K.; Murty, A.A.N.; Rao, P.T.,
The emission band spectrum of GaBr,
Physica (Amsterdam), 1974, 75, 386. [all data]
Barrow, 1960
Barrow, R.F.,
Dissociation energies of the gaseous monohalides of boron, aluminium, gallium, indium, and thallium,
Trans. Faraday Soc., 1960, 56, 952. [all data]
Bulewicz, Phillips, et al., 1961
Bulewicz, E.M.; Phillips, L.F.; Sugden, T.M.,
Determination of dissociation constants and heats of formation of simple molecules by flame photometry. Part 8. Stabilities of the gaseous diatomic halides of certain metals,
Trans. Faraday Soc., 1961, 57, 921. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
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