Fluoromethylene

• Formula: CHF
• Molecular weight: 32.0170
• IUPAC Standard InChI: InChI=1S/CHF/c1-2/h1H Copy

  
• IUPAC Standard InChIKey: YUCFVHQCAFKDQG-UHFFFAOYSA-N Copy
• CAS Registry Number: 13453-52-6
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Information on this page:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Vibrational and/or electronic energy levels
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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.

Gas Phase Heat Capacity (Shomate Equation)

C_p° = 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
    C_p = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Reaction 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.

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. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

(CAS Reg. No. 61923-51-1 • 4294967295) +  = CAS Reg. No. 61923-51-1

By formula: (CAS Reg. No. 61923-51-1 • 4294967295CHF) + CHF = CAS Reg. No. 61923-51-1

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:
HL - Edward P. Hunter and Sharon G. Lias
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
B - John E. Bartmess

View reactions leading to CHF⁺ (ion structure unspecified)

Electron affinity determinations

Ionization energy determinations

Appearance energy determinations

References

Go To: Top, Gas phase thermochemistry data, Reaction 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]

Poutsma, Paulino, et al., 1997
Poutsma, J.C.; Paulino, J.A.; Squires, R.R., Absolute Heats of Formation of CHCl, CHF, and CClF. A Gas-Phase Experimental and G2 Theoretical Study., J. Phys. Chem. A, 1997, 101, 29, 5327, https://doi.org/10.1021/jp970778f . [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Gilles, Ervin, et al., 1992
Gilles, M.K.; Ervin, K.M.; Ho, J.; Lineberger, W.C., Negative Ion Photoelectron Spectroscopy of HCF-, HCCl-, HCBr-, and HCI- - Photoelectron Angular Distributions and Neutral Triplet Excitation, J. Phys. Chem., 1992, 96, 3, 1130, https://doi.org/10.1021/j100182a021 . [all data]

Murray, Leopold, et al., 1988
Murray, K.K.; Leopold, D.G.; Miller, T.M.; Lineberger, W.C., Photoelectron Spectroscopy of the Halocarbene Anions HCF^-, HCCl^-, HCBr^-, HCI^-, CF₂^-, and CCl₂^-, J. Chem. Phys., 1988, 89, 9, 5442, https://doi.org/10.1063/1.455596 . [all data]

Irikura, Hudgens, et al., 1995
Irikura, K.K.; Hudgens, J.W.; Johnson, R.D., III, Spectroscopy of the fluoromethylene radicals HCF and DCF by 2+1 resonance enhanced multiphoton ionization spectroscopy and by ab initio calculation, J. Chem. Phys., 1995, 103, 1303. [all data]

Goto, Nakamura, et al., 1994
Goto, M.; Nakamura, K.; Toyoda, H.; Sugai, H., Cross section measurements for electron-impact dissociation of CHF₃ into neutral and ionic fragments, Jpn. J. Appl. Phys. Part 1, 1994, 33, 3602. [all data]

Lias, Karpas, et al., 1985
Lias, S.G.; Karpas, Z.; Liebman, J.F., Halomethylenes: Effects of halogen substitution on absolute heats of formation, J. Am. Chem. Soc., 1985, 107, 6089. [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, References

• Symbols used in this document:
  

  AE	Appearance energy
  EA	Electron affinity
  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
  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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