Fluoroimidogen
- Formula: FN
- Molecular weight: 33.0051
- IUPAC Standard InChI: InChI=1S/FN/c1-2
- IUPAC Standard InChIKey: CMUBZTZNXGBJMQ-UHFFFAOYSA-N
- CAS Registry Number: 13967-06-1
- Chemical structure:
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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Theoretical potential functions and spectroscopic constants for the ground and several excited states O'Hare and Wahl, 1971, Andersen and Ohrn, 1973, Ellis and Banyard, 1974 | ||||||||||||
| b 1Σ+ | 18877.05 | 1197.49 Z | 8.64 | 1.23770 | 0.01448 | 5.28E-6 | 1.29983 | b 1 → X 2 V | 18905.20 Z | |||
| ↳missing citation | ||||||||||||
| a 1Δ | [12003.60] | [1.2225] 3 | [4.5E-6] | [1.3079] | a → X V | 11435.16 Z | ||||||
| ↳missing citation | ||||||||||||
| X 3Σ- | 0 | 1141.37 Z | 8.99 | 1.20568 4 | 0.01492 | 5.39E-6 | 1.31698 5 | |||||
| ↳Milligan and Jacox, 1964 | ||||||||||||
Notes
| 1 | Lifetime 0.16 s, estimated from the rate of attenuation of the green emission in the reaction N + NF2 along a flow tube Clyne and White, 1970. |
| 2 | Franck-Condon factors Mohamed, Khanna, et al., 1974. |
| 3 | Spin coupling constants λ0 = 1.2l5, γ0 = -0.0048. |
| 4 | missing note |
| 5 | Vibration sp. 7 |
| 6 | Estimated by O'Hare and Wahl, 1971 on the basis of spectroscopic and thermochemical data; the ab initio computed value is 3.6 eV. |
| 7 | Observed in argon and nitrogen matrices, ΔG(1/2) = 1115. |
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.
O'Hare and Wahl, 1971
O'Hare, P.A.G.; Wahl, A.C.,
Quantum-chemical study of some pnicogen monofluorides,
J. Chem. Phys., 1971, 54, 4563. [all data]
Andersen and Ohrn, 1973
Andersen, A.; Ohrn, Y.,
Configuration interaction studies of NF and NF+,
J. Mol. Spectrosc., 1973, 45, 358. [all data]
Ellis and Banyard, 1974
Ellis, D.J.; Banyard, K.E.,
A calculation of the spectroscopic constants for several states of NF,
J. Phys. B:, 1974, 7, 2021. [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]
Clyne and White, 1970
Clyne, M.A.A.; White, I.F.,
Electronic energy transfer processes in fluorine-containing radicals: singlet NF,
Chem. Phys. Lett., 1970, 6, 465. [all data]
Mohamed, Khanna, et al., 1974
Mohamed, K.A.; Khanna, B.N.; Lal, K.M.,
Franck-Condon factors & r-centroids for the b1Σ+ -- X3Σ- band system of NF,
Indian J. Pure Appl. Phys., 1974, 12, 243. [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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