boron fluoride


Gas phase thermochemistry 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.

Quantity Value Units Method Reference Comment
Δfgas-27.701kcal/molReviewChase, 1998Data last reviewed in December, 1964
Quantity Value Units Method Reference Comment
gas,1 bar47.916cal/mol*KReviewChase, 1998Data 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.

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Temperature (K) 298. to 700.700. to 6000.
A 5.2341718.570459
B 5.4699910.312578
C -1.780841-0.053957
D -0.6368490.004053
E 0.034022-0.363387
F -29.37261-31.24950
G 52.8952956.79149
H -27.70010-27.70010
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1964 Data last reviewed in December, 1964

Gas phase ion energetics 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 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 ± 0.01eVN/AN/AL

Ionization energy determinations

IE (eV) Method Reference Comment
11.0 ± 1.0EIFarber and Srivastava, 1984LBLHLM
11.12 ± 0.01PEDyke, Kirby, et al., 1983LBLHLM
11.115EVALHuber and Herzberg, 1979LLK
12. ± 1.EIUy, Srivastava, et al., 1971LLK
11.06 ± 0.10EIHildenbrand, 1971LLK
~11.45SHildenbrand, 1971LLK
11.115 ± 0.003SCaton and Douglas, 1970RDSH

References

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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

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