iron difluoride
- Formula: F2Fe
- Molecular weight: 93.842
- CAS Registry Number: 7789-28-8
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Phase change 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 by: William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 64.8 ± 0.48 | kcal/mol | N/A | Bardi, Brunetti, et al., 1996 | |
| ΔsubH° | 64.5 ± 0.7 | kcal/mol | N/A | Zhuravleva, Alikhanyan, et al., 1976 | See also Bardi, Brunetti, et al., 1996. |
Enthalpy of sublimation
| ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 62.9 ± 0.48 | 1068. | TE,ME | Bardi, Brunetti, et al., 1996 | Based on data from 958. to 1178. K. |
| 62.9 ± 0.7 | 995. | ME | Zhuravleva, Alikhanyan, et al., 1976 | Based on data from 848. to 1142. K. See also Bardi, Brunetti, et al., 1996. |
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:
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
View reactions leading to F2Fe+ (ion structure unspecified)
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| <2.69291 | TDEq | Borshchevskii, Boltalina, et al., 1988 | B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 11.3 ± 0.3 | EI | Kent and Margrave, 1965 | RDSH |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| FeF+ | 12.6 ± 0.3 | F | EI | Kent and Margrave, 1965 | RDSH |
| Fe+ | 16.5 ± 0.3 | ? | EI | Kent and Margrave, 1965 | 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.
Bardi, Brunetti, et al., 1996
Bardi, Gianpiero; Brunetti, Bruno; Piacente, Vincenzo,
Vapor Pressure and Standard Enthalpies of Sublimation of Iron Difluoride, Iron Dichloride, and Iron Dibromide,
J. Chem. Eng. Data, 1996, 41, 1, 14-20, https://doi.org/10.1021/je950115w
. [all data]
Zhuravleva, Alikhanyan, et al., 1976
Zhuravleva, L.V.; Alikhanyan, A.S.; Sidorov, L.N.,
Russ. J. Phys. Chem., 1976, 50, 818. [all data]
Borshchevskii, Boltalina, et al., 1988
Borshchevskii, A.Ya.; Boltalina, O.V.; Sorokin, I.D.; Sidorov, L.N.,
Thermochemical Quantities for Gas Phase Iron, Uranium, and Molybdenum Fluorides, and Their Negative Ions.,
J. Chem. Thermodyn., 1988, 20, 5, 523, https://doi.org/10.1016/0021-9614(88)90080-8
. [all data]
Kent and Margrave, 1965
Kent, R.A.; Margrave, J.L.,
Mass spectrometric studies at high temperatures. VIII. The sublimation pressure of iron(II) fluoride,
J. Am. Chem. Soc., 1965, 87, 4754. [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 ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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