beryllium fluoride
- Formula: BeF2
- Molecular weight: 47.008988
- CAS Registry Number: 7787-49-7
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Gas phase ion energetics data
Go To: Top, Ion clustering 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
14.5 ± 1.0 | EI | Farber and Srivastava, 1974 | LLK |
14.7 ± 0.4 | EI | Hildenbrand and Murad, 1966 | RDSH |
14.5 ± 0.4 | EI | Hildenbrand and Theard, 1965 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
Be+ | 28.3 ± 1.0 | ? | EI | Hildenbrand and Theard, 1965 | RDSH |
BeF+ | 15.5 | F | EI | Hildenbrand and Murad, 1966 | RDSH |
BeF+ | 15.4 ± 0.4 | F | EI | Hildenbrand and Theard, 1965 | RDSH |
Ion clustering 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 by: John E. Bartmess
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
By formula: AlF4- + BeF2 = (AlF4- • BeF2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.5 ± 2.5 | kcal/mol | TDAs | Nikitin, Sorokin, et al., 1980 | gas phase; value altered from reference due to conversion from electron convention to ion convention |
Be2F5- + BeF2 = (Be2F5- • BeF2)
By formula: Be2F5- + BeF2 = (Be2F5- • BeF2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 41.8 ± 2.5 | kcal/mol | N/A | Nikitin, Sorokin, et al., 1980 | gas phase; value altered from reference due to conversion from electron convention to ion convention |
By formula: F- + BeF2 = (F- • BeF2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 97.3 ± 2.3 | kcal/mol | TDEq | Nikitin, Sorokin, et al., 1980 | gas phase; Fluoride Affinity: 19.9±1.7 kcal < AlF3; value altered from reference due to conversion from electron convention to ion convention |
References
Go To: Top, Gas phase ion energetics data, Ion clustering data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Farber and Srivastava, 1974
Farber, M.; Srivastava, R.D.,
Dissociation energies of BeF and BeCl and the heat of formation of BeClF,
J. Chem. Soc. Faraday Trans. 1, 1974, 70, 1581. [all data]
Hildenbrand and Murad, 1966
Hildenbrand, D.L.; Murad, E.,
Mass-spectrometric determination of the dissociation energy of beryllium monofluoride,
J. Chem. Phys., 1966, 44, 1524. [all data]
Hildenbrand and Theard, 1965
Hildenbrand, D.L.; Theard, L.P.,
Effusion studies, mass spectra, and thermodynamics of beryllium fluoride vapor,
J. Chem. Phys., 1965, 42, 3230. [all data]
Nikitin, Sorokin, et al., 1980
Nikitin, M.I.; Sorokin, I.D.; Skokan, E.V.; Sidorov, L.N.,
Negative Ions in the Saturated Vapors of the Potassium Fluoride - Hafnium Tetrafluoride and Potassium Fluoride - Beryllium Difluoride Systems,
Russ. J. Phys. Chem., 1980, 54, page]. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Ion clustering data, References
- Symbols used in this document:
AE Appearance energy ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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