HypoFluorous acid

• Formula: FHO
• Molecular weight: 36.0057
• IUPAC Standard InChI: InChI=1S/FHO/c1-2/h2H Copy

  
• IUPAC Standard InChIKey: AQYSYJUIMQTRMV-UHFFFAOYSA-N Copy
• CAS Registry Number: 14034-79-8
• 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.
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • Gas phase ion energetics data
  • Vibrational and/or electronic energy levels
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
• Data at other public NIST sites:
  • Microwave spectra (on physics lab web site)
  • Gas Phase Kinetics Database
• Options:
  • Switch to SI units

Data at NIST subscription sites:

• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.

Gas phase thermochemistry data

Go To: Top, Phase change data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References, Notes

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.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Phase change data

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Phase change data, Vibrational and/or electronic energy levels, 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:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

FO^- +  =

By formula: FO^- + H⁺ = HFO

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Phase change data, 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:
J - Marilyn E. Jacox
Shim - Takehiko Shimanouchi

State:   ?

State:   X

Additional references: Jacox, 1994, page 51; Kim, Pearson, et al., 1972; Pearson and Kim, 1972; Burger, Pawelke, et al., 1989, 2

Notes

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, 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]

Studier and Appleman, 1971
Studier, M.H.; Appleman, E.H., Hypofluorous Acid, J. Am. Chem. Soc., 1971, 93, 2349. [all data]

Berkowitz, Dehmer, et al., 1973
Berkowitz, J.; Dehmer, J.L.; Appelman, E.H., Photoelectron spectrum of hypofluorous acid, HOF, Chem. Phys. Lett., 1973, 19, 334. [all data]

Berkowitz, Appelman, et al., 1973
Berkowitz, J.; Appelman, E.H.; Chupka, W.A., Photoionization of HOF with mass analysis, J. Chem. Phys., 1973, 58, 1950. [all data]

Gilles, Polak, et al., 1992
Gilles, M.K.; Polak, M.L.; Lineberger, W.C., Photoelectron Spectroscopy of the Halogen Oxide Anions FO-, ClO-, BrO-, IO-, OClO-, and OIO-, J. Chem. Phys., 1992, 96, 11, 8012, https://doi.org/10.1063/1.462352 . [all data]

Elliott, 1983
Elliott, S., Atmos. Environ, 1983, 17, 759. [all data]

Appelman, Downs, et al., 1989
Appelman, E.H.; Downs, A.J.; Gardner, C.J., Matrix photochemistry of hypofluorous acid, HOF: oxygen atom transfer and other reactions, J. Phys. Chem., 1989, 93, 2, 598, https://doi.org/10.1021/j100339a021 . [all data]

Appelman and Kim, 1972
Appelman, E.H.; Kim, H., Gas-Phase Infrared Spectra of HOF and DOF, J. Chem. Phys., 1972, 57, 8, 3272, https://doi.org/10.1063/1.1678752 . [all data]

Burger, Pawelke, et al., 1989
Burger, H.; Pawelke, G.; Rahner, A.; Appelman, E.H.; Halonen, L., The high-resolution infrared spectrum of HOF: The interacting ν1 and 2ν2 + ν3 states, J. Mol. Spectrosc., 1989, 138, 2, 346, https://doi.org/10.1016/0022-2852(89)90003-9 . [all data]

Goleb, Claassen, et al., 1972
Goleb, J.A.; Claassen, H.H.; Studier, M.H.; Appelman, E.H., Spectrochim. Acta, 1972, 28A, 65. [all data]

Burger, Pawelke, et al., 1988
Burger, H.; Pawelke, G.; Rahner, A.; Appelman, E.H.; Mills, I.M., The infrared spectrum of the ν2 and ν3 bands of H16OF, H18OF, and D16OF, J. Mol. Spectrosc., 1988, 128, 1, 278, https://doi.org/10.1016/0022-2852(88)90224-X . [all data]

Noble and Pimentel, 1968
Noble, P.N.; Pimentel, G.C., Spectrochim. Acta, 1968, 24A, 7907. [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]

Kim, Pearson, et al., 1972
Kim, H.; Pearson, E.F.; Appelman, E.H., Millimeter-Wave Spectrum and Structure of Hypofluorous Acid: HOF and DOF, J. Chem. Phys., 1972, 56, 1, 1, https://doi.org/10.1063/1.1676830 . [all data]

Pearson and Kim, 1972
Pearson, E.F.; Kim, H., Centrifugal Distortion Analysis of Hypofluorous Acid: HOF and DOF, J. Chem. Phys., 1972, 57, 10, 4230, https://doi.org/10.1063/1.1678053 . [all data]

Burger, Pawelke, et al., 1989, 2
Burger, H.; Pawelke, G.; Sommer, S.; Rahner, A.; Appelman, E.H.; Mills, I.M., The high-resolution infrared spectrum of HOF near 2700 cm-1: The ground and 2ν2 states, J. Mol. Spectrosc., 1989, 136, 1, 197, https://doi.org/10.1016/0022-2852(89)90232-4 . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References

• Symbols used in this document:
  

  AE	Appearance energy
  IE (evaluated)	Recommended ionization energy
  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  Tfus	Fusion (melting) point
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction 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.