Magnesium bromide
- Formula: BrMg
- Molecular weight: 104.209
- CAS Registry Number: 14519-11-0
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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 March, 1977
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| R shaded bands in the region 36800 - 39400 cm-1 have been variously attributed to a 2Π ← X 2Σ transition Harrington, 1942 or to a 2Σ ← X 2Σ Reddy and Rao, 1970; ω'e ~ 223 or 272 cm-1 respectively. | ||||||||||||
| A 2Π | 25877 | 393.9 H | 2.04 | [(0.1685)] 1 2 | [(2.332)] | A ↔ X V | 25887 H | |||||
| ↳Olmsted, 1906; Morgan, 1936; Harrington, 1942; Puri and Mohan, 1974 | ||||||||||||
| 25766.9 | 393.9 H | 2.04 | [(0.1685)] 1 2 | [(2.332)] | A ↔ X V | 25776.8 H | ||||||
| ↳Olmsted, 1906; Morgan, 1936; Harrington, 1942; Puri and Mohan, 1974 | ||||||||||||
| X 2Σ+ | 0 | 373.8 H | 1.34 | [(0.1645)] 1 | [(2.360)] | |||||||
Notes
| 1 | Partial rotational analysis of the 0-0 band Patel and Patel, 1969. |
| 2 | Predissociation above v=3. |
| 3 | From the predissociation in A 2Π. |
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.
Harrington, 1942
Harrington,
Dissertation, University of California, California, 1942, 0. [all data]
Reddy and Rao, 1970
Reddy, B.R.K.; Rao, P.T.,
The electronic emission spectrum of the MgBr molecule,
Curr. Sci., 1970, 39, 509. [all data]
Olmsted, 1906
Olmsted, C.M.,
Die bandenspektra nahe verwandter verbindungen,
Z. Wiss. Photogr. Photophys. Photochem., 1906, 4, 293-333. [all data]
Morgan, 1936
Morgan, F.,
Band spectra of MgCl, MgBr and MgI in absorption,
Phys. Rev., 1936, 50, 603. [all data]
Puri and Mohan, 1974
Puri, S.N.; Mohan, H.,
Thermal emission spectrum of the molecule - MgBr,
Curr. Sci., 1974, 43, 442. [all data]
Patel and Patel, 1969
Patel, M.M.; Patel, P.D.,
Rotational analysis of the (0,0) bands of the A2Π → X2Σ+ system of MgBr,
J. Phys. B:, 1969, 2, 515. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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