Bromoimidogen
- Formula: BrN
- Molecular weight: 93.911
- CAS Registry Number: 13967-29-8
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Constants of diatomic molecules
Go To: Top, 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 May, 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| b 1Σ+ | 14787.3 | 785.5 H | 4.363 | 0.4733 1 | 0.0152 | 1.7306 | b → X 2 V | 14834.3 H | ||||
| ↳Elliott, 1939; missing citation | ||||||||||||
| X 3Σ-(0+) | 0 3 | 691.75 H | 4.720 | 0.444 3 1 | 0.0040 3 | 1.787 4 | ||||||
| ↳Milligan and Jacox, 1964 | ||||||||||||
Notes
| 1 | Potential functions Singh and Rai, 1966. |
| 2 | Franck-Condon factors Itagi, Shamkuwar, et al., 1971. |
| 3 | Only levels with N = J+1, i.e. F1(N) corresponding in case "c" to the 0+ component, have been observed at high resolution. For this reason, and since only B"3 and B"7 have been determined (assuming λ ~8.7, γ ~-0.7) the values of Be and αe are not very precise. |
| 4 | Vibration sp. 6 |
| 5 | Estimated from the highest v' value observed in b→X emission from the reaction N(4S) + Br(2P3/2) → NBr* → NBr + hv Milton, Dunford, et al., 1961. |
| 6 | In argon and nitrogen matrices, ΔG(1/2) = 691. |
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.
Elliott, 1939
Elliott, A.,
A band spectrum attributed to NBr,
Proc. R. Soc. London A, 1939, 169, 469. [all data]
Milligan and Jacox, 1964
Milligan, D.E.; Jacox, M.E.,
Infrared Spectra of NF, NCl, and NBr,
J. Chem. Phys., 1964, 40, 9, 2461, https://doi.org/10.1063/1.1725547
. [all data]
Singh and Rai, 1966
Singh, R.B.; Rai, D.K.,
Potential curves for some diatomic molecules: P2, PN, SiN, NBr, BaO, BeF, SiF & SnF,
Indian J. Pure Appl. Phys., 1966, 4, 102. [all data]
Itagi, Shamkuwar, et al., 1971
Itagi, S.; Shamkuwar, N.R.; Itagi, V.V.,
Franck-Condon factors for bands of NBr 1Σ+-3Σ- system,
Indian J. Phys., 1971, 45, 385. [all data]
Milton, Dunford, et al., 1961
Milton, E.R.V.; Dunford, H.B.; Douglas, A.E.,
Spectrum of NBr excited in active nitrogen,
J. Chem. Phys., 1961, 35, 1202. [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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