beryllium fluoride
- Formula: BeF2
- Molecular weight: 47.008988
- CAS Registry Number: 7787-49-7
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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:
AC - William E. Acree, Jr., James S. Chickos
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
53.25 | 923. | TE,ME,GS | Greenbaum, Foster, et al., 1963 | Based on data from 823. to 1223. K.; AC |
46.99 | 911. | N/A | Novoselova, Semenenko, et al., 1958 | Based on data from 821. to 1002. K.; AC |
50.10 | 911. | N/A | Sense and Stone, 1958 | Based on data from 802. to 1021. K.; AC |
50.88 | 856. | GS | Sense, Snyder, et al., 1954 | Based on data from 745. to 968. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
1145.6 to 1372. | 6.13628 | 7577.291 | -211.665 | Cantor, 1965 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
56.50 ± 0.69 | 750. | TE | Blauer, Greenbaum, et al., 1965 | Based on data from 713. to 795. K.; AC |
55.40 ± 0.41 | 755. | MS | Blauer, Greenbaum, et al., 1965 | 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:
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 |
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.
Greenbaum, Foster, et al., 1963
Greenbaum, Michael A.; Foster, James N.; Arin, M. Louis; Farber, Milton,
THE THERMODYNAMIC AND PHYSICAL PROPERTIES OF BERYLLIUM COMPOUNDS. I. ENTHALPY AND ENTROPY OF VAPORIZATION OF BERYLLIUM FLUORIDE 1,2,
J. Phys. Chem., 1963, 67, 1, 36-40, https://doi.org/10.1021/j100795a009
. [all data]
Novoselova, Semenenko, et al., 1958
Novoselova, A.V.; Semenenko, K.N.; Turova, O.Ya.,
Vestn. Mosk. Univ., Ser. Mat., Mekh., Astron., Fiz., Khim., 1958, 13, 139. [all data]
Sense and Stone, 1958
Sense, Karl A.; Stone, Richard W.,
Vapor Pressures and Molecular Composition of Vapors of the Sodium Fluoride-Beryllium Fluoride System,
J. Phys. Chem., 1958, 62, 4, 453-457, https://doi.org/10.1021/j150562a020
. [all data]
Sense, Snyder, et al., 1954
Sense, K.A.; Snyder, M.J.; Clegg, J.W.,
The Vapor Pressure of Beryllium Fluoride,
J. Phys. Chem., 1954, 58, 3, 223-224, https://doi.org/10.1021/j150513a008
. [all data]
Cantor, 1965
Cantor, S.,
Vapor Pressures of BeF2 and NiF2,
J. Chem. Eng. Data, 1965, 10, 3, 237-238, https://doi.org/10.1021/je60026a008
. [all data]
Blauer, Greenbaum, et al., 1965
Blauer, Jay A.; Greenbaum, Michael A.; Farber, Milton,
The Thermodynamic and Physical Properties of Beryllium Compounds. VII. Enthalpy and Entropy of Sublimation of Beryllium Fluoride,
J. Phys. Chem., 1965, 69, 3, 1069-1070, https://doi.org/10.1021/j100887a508
. [all data]
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]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy ΔsubH Enthalpy of sublimation ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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