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Germanium monofluoride


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 September, 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 74Ge19F
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
G 2Deltar(4ddelta) 49412.89 1 710.37 Z 2.82 H  0.38408 0.00261  [4.43E-7] 2  1.70411 G rarrow X V 48523.4 HQ
Barrow, Butler, et al., 1959; missing citation
           G rarrow X V 49415.6 HQ
Barrow, Butler, et al., 1959; missing citation
D 2Sigma+(6ssigma) 48581.26 833.12 Z 3 6.52 H  0.39972 3 0.00214  [3.73E-7] 4  1.6704 D rarrow A V 25473.30 Z
missing citation
           D rarrow X V 47726.6 HQ
missing citation
           D rarrow X V 48662.6 HQ
missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
D' 2p(4dpi) 47920.73 5 803.96 6 Z 3.38 H  0.40068 6 7 0.00259  3.62E-7 6  1.6684 D' rarrow A V 24798.98 6 Z
missing citation
           D' rarrow X 8 V 47043.0 H
missing citation
           D' rarrow X 8 V 47976.3 H
missing citation
E 2Sigma+ (5psigma) 46645.41 760.08 Z 2.967  0.39845 9 0.00290  4.33E-7  1.67310 E rarrow B 10 11616.26 Z
missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
C 2Delta 43977.49 11 [684.00] Z 9.31  0.38835 0.00421  [4.97E-7] 12  1.69472 C rarrow X V 43059.27 13 Z
Barrow, Butler, et al., 1959; Uzikov and Kuzyakov, 1969; missing citation
           C rarrow X V 43994.43 13 Z
Barrow, Butler, et al., 1959; Uzikov and Kuzyakov, 1969; missing citation
C' 2Pi (5ppi) 43369.61 14 796.88 Z 3.415  0.39957 15 0.00258  4.13E-7  1.67075 C' rarrow A 16 R 20244.31
Martin and Merer, 1974
           C' rarrow X 17 V 42547.8 H
Uzikov and Kuzyakov, 1969; missing citation
           C' rarrow X 17 V 43379.9 H
Uzikov and Kuzyakov, 1969; missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
a 4Sigma- 35194.68 18 [628.31] Z 6.66 19  0.36676 18 0.00369  [4.94E-7] 20  1.7439 a rarrow X 35181.77 Z
missing citation
B 2Sigma+(5ssigma) 35010.85 796.99 Z 3.613 21 0.0124 0.39440 22 0.00255  3.88E-7  1.68167 B rarrow A V 11885.56 Z
Barrow, Butler, et al., 1959
           B rarrow X 23 V 34141.23 Z
missing citation; missing citation
           B rarrow X 23 V 35076.39 Z
missing citation; missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A 2Sigma+ 23316.65 413.03 Z 1.124 24  0.32039 25 0.00307 26  7.78E-7 27  1.86582 A rarrow X 23 R 22255.67 Z
  413.03 Z 1.124 24  0.32039 25 0.00307 26  7.78E-7 27  1.86582  23190.83 Z
X 2Pi3/2 934.33 667.33 Z 3.150 28  0.36660 0.002675 29  4.50  1.7452  
X 2Pi1/2 0 665.67 Z 3.150 28  0.36578 30 0.002675 29  4.47  1.7452  

Notes

1A0 = +22.20, A1 = +21.5: small J dependence.
2D1 = 4.52E-7.
3Rotational analysis of v=2, and tentative results for v=0.
4D2 = 3.33E-7.
5A2 = (+)4.23, A3 = (+)4.35.
6Extrapolation from the rotationally analyzed levels v'=2 and 3; betae = +0.21E-7.
7Large Lambda-type doubling, also spin-rotation interaction; see Martin and Merer, 1974.
8The 0-1 and 0-2 bands were previously considered by Barrow, Butler, et al., 1959 as 0-0 bands of their transitions F-X and E-X, respectively.
9Spin-doubling constant gamma(v=0) = -0.0358.
10Deltav=0 sequence of slightly V shaded bands, provisionally assigned in Barrow, Butler, et al., 1959 to a E(2Pi)- B(2Sigma) transition.
11A0 = 13.88, A1 = 14.25.
12D1 = 5.15E-7
13Referring in the upper state to the zero point of the Hill-Van Vleck expression.
14A0 = 105.63, A1 = 105.88, A2 = 105.96; small J dependence.
15Lambda-type doubling in 2Pi1/2, Deltavfe(v=0)=-0.0373(J+1/2).
16Extremely weak system consisting of a long 0-v" progression; not analyzed.
17The 3-1 and 1-0 bands of C' 2Pi1/2 - X 2Pi1/2 correspond to the 0-0 subbands of a system D-X proposed earlier by Barrow, Butler, et al., 1959. The 2-1 band of the 3/2- 3/2 system was assigned by Barrow, Butler, et al., 1959 as 0-0 band of C'-X2Pi1/2.
18Spin-splitting constants for v=0: lambda = +8.086, v=0 [4lambda = T0(4Sigma3/2) - T0(4Sigma1/2), v=0]; gamma1 ~ gamma2 = 0.0119, v=0. See also 22.
19Based on the interpretation of a perturbation in B 2Sigma+, v=4.
20D1 = 4.90E-7.
21missing note
22Spin=doubling constant gamma(v=0) = +0.00100. Extensive perturbations between B 2Sigma+, v=0, and, a 4Sigma-, v=0.
23Franck-Condon factors Singh, 1975.
24missing note
25Spin-doubling constant gamma(v) = -[0.03662 + 0.000l4(v+1/2)].
26missing note
27Dv= -0.22E-7(v+1/2) +...
28missing note
29missing note
30Lambda-type doubling, Deltavfe = -[0.02184 + 0.000195 (v+1/2)](J+1/2).
31Thermochemical value (mass-spectrom.) Ehlert and Margrave, 1964; see also Harland, Cradock, et al., 1973.
32Approximate limit of the ns (n = 5, 6, ...) Rydberg series Martin and Merer, 1974. Harland, Cradock, et al., 1973 give 7.2 eV from electron impact mass spectrometry.

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.

Barrow, Butler, et al., 1959
Barrow, R.F.; Butler, D.; Johns, J.W.C.; Powell, J.L., Some observations on the spectra of the diatomic fluorides of silicon, germanium, tin, and lead, Proc. Phys. Soc. London, 1959, 73, 317. [all data]

Uzikov and Kuzyakov, 1969
Uzikov, A.N.; Kuzyakov, Yu.Ya., Analysis of the vibrational structure of C-X2P and C'X2P-band systems and the energy of dissociation of GeF, Moscow Univ. Chem. Bull. Engl. Transl., 1969, 24, 22, In original 30. [all data]

Martin and Merer, 1974
Martin, R.W.; Merer, A.J., Rotational structure in some higher excited states of the GeF molecule, Can. J. Phys., 1974, 52, 1458. [all data]

Singh, 1975
Singh, J., Vibrational transition probabilities & r-centroids for diatomic fluorides of Si & Ge, Indian J. Pure Appl. Phys., 1975, 13, 204. [all data]

Ehlert and Margrave, 1964
Ehlert, T.C.; Margrave, J.L., Mass-spectrometric studies at high temperatures. II. The dissociation energies of the monofluorides and difluorides of silicon and germanium, J. Chem. Phys., 1964, 41, 1066. [all data]

Harland, Cradock, et al., 1973
Harland, P.W.; Cradock, S.; Thynne, J.C.J., Bond dissociation energies, ionisation potentials and electron affinities of some germanium fluoride species, Inorg. Nucl. Chem. Lett., 1973, 9, 53. [all data]


Notes

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