Germanium monofluoride
- Formula: FGe
- Molecular weight: 91.64
- IUPAC Standard InChIKey: HHFCFXJTAZTLAO-UHFFFAOYSA-N
- CAS Registry Number: 14929-46-5
- Chemical structure:
This structure is also available as a 2d Mol file - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Options:
Gas phase ion energetics data
Go To: Top, Constants of diatomic molecules, References, Notes
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 |
---|---|---|---|
7.46 | EVAL | Huber and Herzberg, 1979 | LLK |
≤9.1 ± 0.2 | EI | Zmbov, Hastie, et al., 1968 | RDSH |
~7.28 | S | Johns and Barrow, 1958 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
F+ | 33.0 ± 0.3 | ? | EI | Harland, Cradock, et al., 1973 | LLK |
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
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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
G 2Δr(4dδ) | 49412.89 1 | 710.37 Z | 2.82 H | 0.38408 | 0.00261 | [4.43E-7] 2 | 1.70411 | G → X V | 48523.4 HQ | |||
↳Barrow, Butler, et al., 1959; missing citation | ||||||||||||
G → X V | 49415.6 HQ | |||||||||||
↳Barrow, Butler, et al., 1959; missing citation | ||||||||||||
D 2Σ+(6sσ) | 48581.26 | 833.12 Z 3 | 6.52 H | 0.39972 3 | 0.00214 | [3.73E-7] 4 | 1.6704 | D → A V | 25473.30 Z | |||
↳missing citation | ||||||||||||
D → X V | 47726.6 HQ | |||||||||||
↳missing citation | ||||||||||||
D → X V | 48662.6 HQ | |||||||||||
↳missing citation | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
D' 2p(4dπ) | 47920.73 5 | 803.96 6 Z | 3.38 H | 0.40068 6 7 | 0.00259 | 3.62E-7 6 | 1.6684 | D' → A V | 24798.98 6 Z | |||
↳missing citation | ||||||||||||
D' → X 8 V | 47043.0 H | |||||||||||
↳missing citation | ||||||||||||
D' → X 8 V | 47976.3 H | |||||||||||
↳missing citation | ||||||||||||
E 2Σ+ (5pσ) | 46645.41 | 760.08 Z | 2.967 | 0.39845 9 | 0.00290 | 4.33E-7 | 1.67310 | E → B 10 | 11616.26 Z | |||
↳missing citation | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
C 2Δ | 43977.49 11 | [684.00] Z | 9.31 | 0.38835 | 0.00421 | [4.97E-7] 12 | 1.69472 | C → X V | 43059.27 13 Z | |||
↳Barrow, Butler, et al., 1959; Uzikov and Kuzyakov, 1969; missing citation | ||||||||||||
C → X V | 43994.43 13 Z | |||||||||||
↳Barrow, Butler, et al., 1959; Uzikov and Kuzyakov, 1969; missing citation | ||||||||||||
C' 2Π (5pπ) | 43369.61 14 | 796.88 Z | 3.415 | 0.39957 15 | 0.00258 | 4.13E-7 | 1.67075 | C' → A 16 R | 20244.31 | |||
↳Martin and Merer, 1974 | ||||||||||||
C' → X 17 V | 42547.8 H | |||||||||||
↳Uzikov and Kuzyakov, 1969; missing citation | ||||||||||||
C' → X 17 V | 43379.9 H | |||||||||||
↳Uzikov and Kuzyakov, 1969; missing citation | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
a 4Σ- | 35194.68 18 | [628.31] Z | 6.66 19 | 0.36676 18 | 0.00369 | [4.94E-7] 20 | 1.7439 | a → X | 35181.77 Z | |||
↳missing citation | ||||||||||||
B 2Σ+(5sσ) | 35010.85 | 796.99 Z | 3.613 21 | 0.0124 | 0.39440 22 | 0.00255 | 3.88E-7 | 1.68167 | B → A V | 11885.56 Z | ||
↳Barrow, Butler, et al., 1959 | ||||||||||||
B → X 23 V | 34141.23 Z | |||||||||||
↳missing citation; missing citation | ||||||||||||
B → X 23 V | 35076.39 Z | |||||||||||
↳missing citation; missing citation | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
A 2Σ+ | 23316.65 | 413.03 Z | 1.124 24 | 0.32039 25 | 0.00307 26 | 7.78E-7 27 | 1.86582 | A → 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 2Π3/2 | 934.33 | 667.33 Z | 3.150 28 | 0.36660 | 0.002675 29 | 4.50 | 1.7452 | |||||
X 2Π1/2 | 0 | 665.67 Z | 3.150 28 | 0.36578 30 | 0.002675 29 | 4.47 | 1.7452 |
Notes
1 | A0 = +22.20, A1 = +21.5: small J dependence. |
2 | D1 = 4.52E-7. |
3 | Rotational analysis of v=2, and tentative results for v=0. |
4 | D2 = 3.33E-7. |
5 | A2 = (+)4.23, A3 = (+)4.35. |
6 | Extrapolation from the rotationally analyzed levels v'=2 and 3; βe = +0.21E-7. |
7 | Large Λ-type doubling, also spin-rotation interaction; see Martin and Merer, 1974. |
8 | The 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. |
9 | Spin-doubling constant γ(v=0) = -0.0358. |
10 | Δv=0 sequence of slightly V shaded bands, provisionally assigned in Barrow, Butler, et al., 1959 to a E(2Π)- B(2Σ) transition. |
11 | A0 = 13.88, A1 = 14.25. |
12 | D1 = 5.15E-7 |
13 | Referring in the upper state to the zero point of the Hill-Van Vleck expression. |
14 | A0 = 105.63, A1 = 105.88, A2 = 105.96; small J dependence. |
15 | Λ-type doubling in 2Π1/2, Δvfe(v=0)=-0.0373(J+1/2). |
16 | Extremely weak system consisting of a long 0-v" progression; not analyzed. |
17 | The 3-1 and 1-0 bands of C' 2Π1/2 - X 2Π1/2 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'-X2Π1/2. |
18 | Spin-splitting constants for v=0: λ = +8.086, v=0 [4λ = T0(4Σ3/2) - T0(4Σ1/2), v=0]; γ1 ~ γ2 = 0.0119, v=0. See also 22. |
19 | Based on the interpretation of a perturbation in B 2Σ+, v=4. |
20 | D1 = 4.90E-7. |
21 | missing note |
22 | Spin=doubling constant γ(v=0) = +0.00100. Extensive perturbations between B 2Σ+, v=0, and, a 4Σ-, v=0. |
23 | Franck-Condon factors Singh, 1975. |
24 | missing note |
25 | Spin-doubling constant γ(v) = -[0.03662 + 0.000l4(v+1/2)]. |
26 | missing note |
27 | Dv= -0.22E-7(v+1/2) +... |
28 | missing note |
29 | missing note |
30 | Λ-type doubling, Δvfe = -[0.02184 + 0.000195 (v+1/2)](J+1/2). |
31 | Thermochemical value (mass-spectrom.) Ehlert and Margrave, 1964; see also Harland, Cradock, et al., 1973, 2. |
32 | Approximate 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
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, References
- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.