Phosphorus fluoride cation
- Formula: FP+
- Molecular weight: 49.971617
- CAS Registry Number: 11080-57-2
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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, 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A 2Σ | 35434.64 | 619.00 Z | 4.62 | 0.5593 1 | 0.0079 | 1.6E-6 | 1.5999 | A → X R | 35217.62 Z | |||
| ↳Douglas and Frackowiak, 1962 | ||||||||||||
| X 2Πr | 0 2 | 1053.25 Z | 5.05 | 0.6360 | 0.0048 | 0.6E-6 | 1.5003 | |||||
Notes
| 1 | Spin-splitting constant γ = 0.0073. |
| 2 | A = +323.95. |
| 3 | ΔG(3/2) = 416.57, ΔG(5/2)= 418.96, ΔG(7/2)= 420.98. |
| 4 | A0 = +143.06, A1 = +142.87; see Kovacs, 1964 who also accounts for spin-rotation interaction and for the combined effects of spin-spin interaction and perturbations by 1Π states. |
| 5 | ΔG(3/2) = 437.37. |
| 6 | Λ-type doubling independent of J Douglas and Frackowiak, 1962 (v=0) ~0.07 cm-1, (v=1) ~0.16 cm-1, (v=2) ~0.25 cm-1. |
| 7 | Notice that Table VIII of Douglas and Frackowiak, 1962 contains a number of misprints leading to disagreement with constants in Table XI. |
| 8 | Spin-splitting constants λ0 = +2.9623, γ0 = +0.0018. |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Douglas and Frackowiak, 1962
Douglas, A.E.; Frackowiak, M.,
The electronic spectra of PF and PF+,
Can. J. Phys., 1962, 40, 832. [all data]
Kovacs, 1964
Kovacs, I.,
Rotational fine structure of the 3Π state of PF,
Can. J. Phys., 1964, 42, 2180. [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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