boron fluoride
- Formula: BF
- Molecular weight: 29.809
- IUPAC Standard InChI: InChI=1S/BF/c1-2
- IUPAC Standard InChIKey: YFSQMOVEGCCDJL-UHFFFAOYSA-N
- CAS Registry Number: 13768-60-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Borane(1), fluoro-
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Gas phase thermochemistry 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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -27.701 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1964 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 47.916 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1964 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
View plot Requires a JavaScript / HTML 5 canvas capable browser.
| Temperature (K) | 298. to 700. | 700. to 6000. |
|---|---|---|
| A | 5.234171 | 8.570459 |
| B | 5.469991 | 0.312578 |
| C | -1.780841 | -0.053957 |
| D | -0.636849 | 0.004053 |
| E | 0.034022 | -0.363387 |
| F | -29.37261 | -31.24950 |
| G | 52.89529 | 56.79149 |
| H | -27.70010 | -27.70010 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in December, 1964 | Data last reviewed in December, 1964 |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
L - Sharon G. Lias
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
View reactions leading to BF+ (ion structure unspecified)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| IE (evaluated) | 11.12 ± 0.01 | eV | N/A | N/A | L |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 11.0 ± 1.0 | EI | Farber and Srivastava, 1984 | LBLHLM |
| 11.12 ± 0.01 | PE | Dyke, Kirby, et al., 1983 | LBLHLM |
| 11.115 | EVAL | Huber and Herzberg, 1979 | LLK |
| 12. ± 1. | EI | Uy, Srivastava, et al., 1971 | LLK |
| 11.06 ± 0.10 | EI | Hildenbrand, 1971 | LLK |
| ~11.45 | S | Hildenbrand, 1971 | LLK |
| 11.115 ± 0.003 | S | Caton and Douglas, 1970 | RDSH |
References
Go To: Top, Gas phase thermochemistry 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.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Farber and Srivastava, 1984
Farber, M.; Srivastava, R.D.,
Electron and thermal dissociation of BF3(g),
J. Chem. Phys., 1984, 81, 241. [all data]
Dyke, Kirby, et al., 1983
Dyke, J.M.; Kirby, C.; Morris, A.,
Study of the ionization process BF+ (X2Σ+)←BF(X1Σ+) by high-temperature photolectron spectroscopy,
J. Chem. Soc. Faraday Trans. 2, 1983, 79, 483. [all data]
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]
Uy, Srivastava, et al., 1971
Uy, O.M.; Srivastava, R.D.; Farber, M.,
Mass spectrometric determination of the heats of formation of gaseous BO2 BOF2,
High Temp. Sci., 1971, 3, 462. [all data]
Hildenbrand, 1971
Hildenbrand, D.L.,
First ionization potentials of the molecules BF, SiO and GeO,
Intern. J. Mass Spectrom. Ion Phys., 1971, 7, 255. [all data]
Caton and Douglas, 1970
Caton, R.B.; Douglas, A.E.,
Electronic spectrum of the BF molecule,
Can. J. Phys., 1970, 48, 432. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
IE (evaluated) Recommended ionization energy S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - 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.