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Germanium monofluoride


Gas phase ion energetics data

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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 as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to FGe+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
7.46EVALHuber and Herzberg, 1979LLK
<=9.1 ± 0.2EIZmbov, Hastie, et al., 1968RDSH
~7.28SJohns and Barrow, 1958RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
F+33.0 ± 0.3?EIHarland, Cradock, et al., 1973LLK

Constants of diatomic molecules

Go To: Top, Gas phase ion energetics data, 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 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, 2.
32Approximate limit of the ns (n = 5, 6, ...) Rydberg series Martin and Merer, 1974. Harland, Cradock, et al., 1973, 2 give 7.2 eV from electron impact mass spectrometry.

References

Go To: Top, Gas phase ion energetics data, 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.

Huber and Herzberg, 1979
Huber, K.P.; Herzberg, G., Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules,, Van Nostrand Reinhold Co., 1979, ,1. [all data]

Zmbov, Hastie, et al., 1968
Zmbov, K.F.; Hastie, J.W.; Hauge, R.; Margrave, J.L., Formation of polymeric (GeF2)n in the vapor phase over GeF2, Inorg. Chem., 1968, 7, 608. [all data]

Johns and Barrow, 1958
Johns, J.W.C.; Barrow, R.F., The band spectrum of silicon monofluoride, SiF, Proc. Phys. Soc. (London), 1958, 71, 476. [all data]

Harland, Cradock, et al., 1973
Harland, P.W.; Cradock, S.; Thynne, J.C.J., Positive-and negative-ion formation due to the electron bombardment of germanium tetrafluoride, Int. J. Mass Spectrom. Ion Phys., 1973, 10, 169. [all data]

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, 2
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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