AsF radical

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 January, 1976

Symbols used in the table of constants
SymbolMeaning
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)
Diatomic constants for 75As19F
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
d 1Π     [0.3989] 1   [0.00000043]  [1.6698] d → b V 37032.07 Z
↳Yee, Liu, et al., 1970; missing citation
           d ↔ a V 43628.60 Z
↳Yee, Liu, et al., 1970; missing citation
           d ← X1 V 50686.43 Z
↳Liu and Jones, 1972
C (3Π)           C → X V 49758 H
↳Liu and Jones, 1972
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
c 1Π 48672.5 817.30 Z 4.39  0.4004 2 3 0.0027  4.0E-07  1.6667 c → b V 35083.56 Z
↳Yee, Liu, et al., 1970; missing citation; Liu and Jones, 1972
           c ↔ a V 41680.09 Z
↳missing citation; missing citation
           c ↔ X2 V 48599 4
↳Liu and Jones, 1972
           c ↔ X1 V 48737.92 Z
↳missing citation
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
B 3Π (48138) 815.5 5 H 3.96 6        B ↔ X V 48202.2 5 H
↳missing citation
c' 1Π 32479.5 399.38 Z 1.34 -0.015 0.2932 7 0.0018  0.00000062  1.948 c' → b V 18682.4
↳missing citation
           c' → a V 25278.88 Z
↳missing citation
c' 1Π 8           c' → X2 V 32198
↳Chatalic, Danon, et al., 1973
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
A4 3Π2 27152 412.28 Z 1.43 -0.031 0.2918 0.0020  0.0000006  1.954 A4 → X2 V 26877.0 Z
↳missing citation
A3 3Π1 26348 412.13 Z 1.44 -0.026 0.2920 9 0.0020     A3 → X1 V 26211.7 Z
↳missing citation
A2 3Π0+ 25751 (419.8) H   (0.2914) (0.0018)     A2 → X2 V 25480
↳Chatalic, Danon, et al., 1974
A1 3Π0- 25719 412.21 Z 1.32 -0.026 0.2904 0.0018     A1 → X2 V 25444.5 Z
↳missing citation
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
b 1Σ+ 13648.6 697.34 Z 3.08  0.3719 0.0028  0.00000047  1.7294 b → X2 V 13515.78 Z
↳missing citation
           b → X1 V 13654.4 Z
↳Liu and Jones, 1972
a 1Δ 7053.5 694.44 Z 3.06  0.3707 0.0026  0.00000044  1.7322  
X2 3Σ- 1 138.7 685.50 HQ 2.95  0.3691 10 11 0.0028  0.00000045  1.7360 10  
X1 3Σ- 0+ 0 685.78 Z 3.12  0.3648 12 11 0.0024  0.00000045  1.7360 10  

Notes

1Predissociated near J = 30.
2Λ-type doubling, Δνef ~ +0.00005J(J+1).
3Predissociation in v=1 at J ~60; v=2 observed in absorption only.
4Very weak band.
5The vibrational analysis of Liu and Jones, 1972 assigns v=0 to the lowest level observed in emission. However, the 1-0 and 0-0 bands may have been observed in absorption Chatalic, Danon, et al., 1971 at 49001 and 48192 cm-1 [47192 in Chatalic, Danon, et al., 1971 seems to be a misprint] as members of a strong upper state progression which begins at 47381 cm-1 and may even include a diffuse band at 46570 cm-1. No details.
6Very complicated rotational structure.
7Λ-type doubling, Δνef ~ +0.000015J(J+1).
8Fragments of a system
9Small Λ-type doubling.
10Be and re from the f component;Δνef = + 0.0035J(J+1).
11For a more detailed discussion of the X 3Σ- (0+,1) fine structure see Veseth, 1973.
12Effective value.
13Theoretical calculations, for D00 supported by limited experimental data; see O'Hare, Batana, et al., 1973. The same paper gives theoretical values for the electron affinity (1.1 eV) and dipole moment (1.75 D) of AsF.
14Long 0-0 sequence of V shaded Q heads; R, P branches undegraded.

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.

Yee, Liu, et al., 1970
Yee, K.K.; Liu, D.S.; Jones, W.E., Vibrational analysis of the singlet systems of AsF, J. Mol. Spectrosc., 1970, 35, 153. [all data]

Liu and Jones, 1972
Liu, D.S.; Jones, W.E., The spectrum of AsF in the near vacuum ultraviolet and near infrared regions, Can. J. Phys., 1972, 50, 1230. [all data]

Chatalic, Danon, et al., 1973
Chatalic, A.; Danon, N.; Iacocca, D.; Pannetier, G., Etude des etats electroniques du monofluorure d'arsenic de configuration σπ. I. L'etat c'1Π, J. Chim. Phys. Phys.-Chim. Biol., 1973, 70, 1600. [all data]

Chatalic, Danon, et al., 1974
Chatalic, A.; Danon, N.; Pannetier, G., Etude des etats electroniques du monofluorure d'arsenic de configuration σπ. II. L'etat A3Π, J. Chim. Phys. Phys.-Chim. Biol., 1974, 71, 243. [all data]

Chatalic, Danon, et al., 1971
Chatalic, A.; Danon, N.; Pannetier, G., Analyses du spectre d'absorption et de deux nouveaux systemes singulets du monofluorure d'arsenic., C.R. Acad. Sci. Paris, Ser. C, 1971, 273, 874. [all data]

Veseth, 1973
Veseth, L., Hund's coupling case (c) in diatomic molecules. II. Examples, J. Phys. B:, 1973, 6, 1484. [all data]

O'Hare, Batana, et al., 1973
O'Hare, P.A.G.; Batana, A.; Wahl, A.C., Arsenic monofluoride (AsF,3Σ): dissociation enthalpy, ionization potential, electron affinity, dipole moment, spectroscopic constants, and ideal gas thermodynamic functions from a Hartree-Fock molecular orbital investigation, J. Chem. Phys., 1973, 59, 6495. [all data]

Notes

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