Germanium difluoride
- Formula: F2Ge
- Molecular weight: 110.64
- IUPAC Standard InChIKey: GGJOARIBACGTDV-UHFFFAOYSA-N
- CAS Registry Number: 13940-63-1
- Chemical structure:
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Phase change data
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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 385. | K | N/A | Adams, Margrave, et al., 1971 | Uncertainty assigned by TRC = 1.5 K; TRC |
Tfus | 385. | K | N/A | Adams, Margrave, et al., 1970 | Uncertainty assigned by TRC = 3. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 19.8 ± 1.0 | kcal/mol | MS | Adams, Margrave, et al., 1971 | AC |
ΔsubH° | 22.3 ± 2.5 | kcal/mol | N/A | Adams, Margrave, et al., 1971 | AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
2.21 | (corrected to 298.K) | Adams, Margrave, et al., 1971 | AC |
Gas phase ion energetics data
Go To: Top, Phase change 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 as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
View reactions leading to F2Ge+ (ion structure unspecified)
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
>1.30 ± 0.30 | EIAE | Harland, Cradock, et al., 1972 | From GeF4; G2MP2 calculations indicate an EA of ca. 0.7 eV; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
12.9 ± 0.3 | EI | Adams, Margrave, et al., 1971, 2 | LLK |
11.8 ± 0.1 | EI | Zmbov, Hastie, et al., 1968 | RDSH |
11.65 | PE | Jonkers, Van Der Kerk, et al., 1982 | Vertical value; LBLHLM |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
GeF+ | 14.0 ± 0.3 | F | EI | Zmbov, Hastie, et al., 1968 | RDSH |
Ge+ | 18.8 ± 0.3 | ? | EI | Zmbov, Hastie, et al., 1968 | RDSH |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Adams, Margrave, et al., 1971
Adams, G.P.; Margrave, J.L.; Steiger, Ronald P.; Wilson, P.W.,
The enthalpy of sublimation of germanium difluoride and the thermodynamics of sublimation of the Group IVa difluorides,
The Journal of Chemical Thermodynamics, 1971, 3, 3, 297-305, https://doi.org/10.1016/S0021-9614(71)80046-0
. [all data]
Adams, Margrave, et al., 1970
Adams, G.P.; Margrave, J.L.; Wilson, P.W.,
The Enthalpy of Formation of Germanium Difluoride,
J. Chem. Thermodyn., 1970, 2, 741-4. [all data]
Harland, Cradock, et al., 1972
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., 1972, 10, 169. [all data]
Adams, Margrave, et al., 1971, 2
Adams, G.P.; Margrave, J.L.; Steiger, R.P.; Wilson, P.W.,
The enthalpy of sublimation of germanium difluoride and the thermodynamics of sublimation of the Group IVa difluorides,
J. Chem. Thermodyn., 1971, 3, 297. [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]
Jonkers, Van Der Kerk, et al., 1982
Jonkers, G.; Van Der Kerk, S.M.; Mooyman, R.; De Lange, C.A.,
UV photoelectron spectroscopy of transient species: Germanium difluoride (GeF2),
Chem. Phys. Lett., 1982, 90, 252. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy EA Electron affinity Tfus Fusion (melting) point ΔfusH Enthalpy of fusion ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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