Fluoromethylidyne

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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
Δfgas60.999kcal/molReviewChase, 1998Data last reviewed in June, 1970
Quantity Value Units Method Reference Comment
gas,1 bar50.915cal/mol*KReviewChase, 1998Data last reviewed in June, 1970

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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View table.

Temperature (K) 298. to 600.600. to 6000.
A 5.2345518.526860
B 5.7670110.382043
C -1.606451-0.079208
D -1.2151600.007686
E 0.036053-0.288711
F 59.3206057.62170
G 55.8164059.91150
H 61.0001061.00010
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in June, 1970 Data last reviewed in June, 1970

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:
LL - Sharon G. Lias and Joel F. Liebman
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
B - John E. Bartmess

View reactions leading to CF+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)9.11 ± 0.01eVN/AN/AL

Electron affinity determinations

EA (eV) Method Reference Comment
>3.30 ± 0.30EIAEThynne and MacNeil, 1970From C2F4. G3MP2B3 calculations indicate an EA of ca. 0.4 eV; B

Ionization energy determinations

IE (eV) Method Reference Comment
9.4 ± 0.4EITarnovsky and Becker, 1993LL
9.11 ± 0.01PEDyke, Lewis, et al., 1984LBLHLM
9.0 ± 0.2PEHepburn, Trevor, et al., 1982LBLHLM
9.20EVALHuber and Herzberg, 1979LLK
9.2 ± 0.1EIHildenbrand, 1975LLK
9.24DERReinke, Kraessig, et al., 1973LLK
~8.91 ± 0.12SCarroll and Grennan, 1970RDSH
9.23 ± 0.08DERWalter, Lifshitz, et al., 1969RDSH
~8.91SJohns and Barrow, 1958RDSH
9.55 ± 0.01PEDyke, Lewis, et al., 1984Vertical value; LBLHLM

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]

Thynne and MacNeil, 1970
Thynne, J.C.J.; MacNeil, K.A.G., Ionisation of Tetrafluoroethylene by Electron Impact, Int. J. Mass Spectrom. Ion Phys., 1970, 5, 3-4, 329, https://doi.org/10.1016/0020-7381(70)80026-2 . [all data]

Tarnovsky and Becker, 1993
Tarnovsky, V.; Becker, K., Absolute partial cross sections for the parent ionization of the CFx (x = 1-3) free radicals by electron impact, J. Chem. Phys., 1993, 98, 7868. [all data]

Dyke, Lewis, et al., 1984
Dyke, J.M.; Lewis, A.E.; Morris, A., A photoelectron spectroscopic study of the ground state of CF+ via the ionization process CF+(X1Σ+)←CF(X2Π), J. Chem. Phys., 1984, 80, 1382. [all data]

Hepburn, Trevor, et al., 1982
Hepburn, J.W.; Trevor, D.J.; Pollard, J.E.; Shirley, D.A.; Lee, Y.T., Multiphoton ionization photoelectron spectroscopy of CCl2F2 and CCl3F, J. Chem. Phys., 1982, 76, 4287. [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]

Hildenbrand, 1975
Hildenbrand, D.L., Vertical ionization potential of the CF2 radical, Chem. Phys. Lett., 1975, 32, 30. [all data]

Reinke, Kraessig, et al., 1973
Reinke, D.; Kraessig, R.; Baumgartel, H., Photoreactions of small organic molecules, Z. Naturforsch. A:, 1973, 28, 1021. [all data]

Carroll and Grennan, 1970
Carroll, P.K.; Grennan, T.P., The B-X system of CF, J. Phys. B:, 1970, 3, 865. [all data]

Walter, Lifshitz, et al., 1969
Walter, T.A.; Lifshitz, C.; Chupka, W.A.; Berkowitz, J., Mass-spectrometric study of the photoionization of C2F4 and CF4, J. Chem. Phys., 1969, 51, 3531. [all data]

Johns and Barrow, 1958
Johns, J.W.C.; Barrow, R.F., The band spectrum of silicon monofluoride, SiF, Proc. Phys. Soc. (London), 1958, 71, 476. [all data]


Notes

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