Iron fluoride
- Formula: FFe
- Molecular weight: 74.843
- CAS Registry Number: 41428-55-1
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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 February, 1975
| 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 | x + (42743) | (694) H | (7) | C ↔ (X) V | 42751 H | |||||||
| ↳missing citation | ||||||||||||
| (R) | ||||||||||||
| ↳Rosen, 1970 | ||||||||||||
| (V) | ||||||||||||
| ↳Rosen, 1970; missing citation | ||||||||||||
| (V) | ||||||||||||
| ↳Rosen, 1970; missing citation | ||||||||||||
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
| (X) | x | (678) H | (7) | |||||||||
Notes
| 1 | Similar in appearance to the B-X2 system of FeCl. |
| 2 | Similar in appearance to the A-X1 system of FeCl. Additional bands at 29580 cm-1 suggest ΔG"(1/2) ~ 660 Rosen, 1970. |
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.
Rosen, 1970
Rosen, B.,
International tables of selected constants. 17. Spectroscopic data relative to diatomic molecules, Pub. Pergamon Press, Oxford, 1970, 0. [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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