Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

hydrogen fluoride

Data at NIST subscription sites:

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.


Ion clustering data

Go To: Top, 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

Bromine anion + hydrogen fluoride = (Bromine anion bullet hydrogen fluoride)

By formula: Br- + HF = (Br- bullet HF)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar17.0 ± 2.0kcal/molEstLarson and McMahon, 1984gas phase; Extrapolated from other bihalide data; B
Deltar17.0kcal/molHPMSCaldwell, Masucci, et al., 1989gas phase; M

C3HF6O- + hydrogen fluoride = (C3HF6O- bullet hydrogen fluoride)

By formula: C3HF6O- + HF = (C3HF6O- bullet HF)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar25.kcal/molICRLarson and McMahon, 1983gas phase; M

C4F9O- + hydrogen fluoride = (C4F9O- bullet hydrogen fluoride)

By formula: C4F9O- + HF = (C4F9O- bullet HF)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar17.kcal/molICRLarson and McMahon, 1983gas phase; M

C4H3F6O- + hydrogen fluoride = (C4H3F6O- bullet hydrogen fluoride)

By formula: C4H3F6O- + HF = (C4H3F6O- bullet HF)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar26.kcal/molICRLarson and McMahon, 1983gas phase; M

Chlorine anion + hydrogen fluoride = (Chlorine anion bullet hydrogen fluoride)

By formula: Cl- + HF = (Cl- bullet HF)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar21.8 ± 2.0kcal/molIMRELarson and McMahon, 1984, 2gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar22.5cal/mol*KN/ALarson and McMahon, 1984, 2gas phase; switching reaction(Cl-)SO2, Entropy change calculated or estimated; Larson and McMahon, 1984, 3; M
Quantity Value Units Method Reference Comment
Deltar15.1 ± 2.0kcal/molIMRELarson and McMahon, 1984, 2gas phase; B,M

Fluorine anion + hydrogen fluoride = (Fluorine anion bullet hydrogen fluoride)

By formula: F- + HF = (F- bullet HF)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar45.8 ± 1.6kcal/molCIDCWenthold and Squires, 1995gas phase; B
Deltar38.6 ± 2.0kcal/molIMRELarson and McMahon, 1983gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B,M
Deltar>34.6 ± 4.6kcal/molTherHeni and Illenberger, 1985gas phase; From CHF=CHF. Outdataed HC2. thermo used. Current value ( Berkowitz, Ellison, et al., 1994) implies Haff>57.; B
Quantity Value Units Method Reference Comment
Deltar21.9cal/mol*KN/ALarson and McMahon, 1983gas phase; switching reaction,Thermochemical ladder(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
Quantity Value Units Method Reference Comment
Deltar32.0 ± 2.0kcal/molIMRELarson and McMahon, 1983gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
32.0289.ICRLarson and McMahon, 1983gas phase; switching reaction,Thermochemical ladder(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M

Hydrogen fluoride, positive ion + hydrogen fluoride = (Hydrogen fluoride, positive ion bullet hydrogen fluoride)

By formula: HF+ + HF = (HF+ bullet HF)

Quantity Value Units Method Reference Comment
Deltar33.kcal/molPITiedemann, Anderson, et al., 1979gas phase; «DELTA»rH>; M

H2F+ + hydrogen fluoride = (H2F+ bullet hydrogen fluoride)

By formula: H2F+ + HF = (H2F+ bullet HF)

Quantity Value Units Method Reference Comment
Deltar25.1 ± 2.5kcal/molPITiedemann, Anderson, et al., 1979gas phase; M

(H2F+ bullet hydrogen fluoride) + hydrogen fluoride = (H2F+ bullet 2hydrogen fluoride)

By formula: (H2F+ bullet HF) + HF = (H2F+ bullet 2HF)

Quantity Value Units Method Reference Comment
Deltar14.8 ± 4.2kcal/molPITiedemann, Anderson, et al., 1979gas phase; M

Iodide + hydrogen fluoride = (Iodide bullet hydrogen fluoride)

By formula: I- + HF = (I- bullet HF)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar15.0 ± 2.0kcal/molEstLarson and McMahon, 1984gas phase; Extrapolated from other bihalide data; B
Deltar15.kcal/molPHPMSCaldwell, Masucci, et al., 1989gas phase; M

References

Go To: Top, Ion clustering data, Notes

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

Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B., Gas phase bihalide and pseudohalide ions. An ICR determination of hydrogen bond energies in XHY- species (X,Y = F, Cl, Br, CN), Inorg. Chem., 1984, 23, 2029. [all data]

Caldwell, Masucci, et al., 1989
Caldwell, G.W.; Masucci, J.A.; Ikonomou, M.G., Negative Ion Chemical Ionization Mass Spectrometry - Binding of Molecules to Bromide and Iodide Anions, Org. Mass Spectrom., 1989, 24, 1, 8, https://doi.org/10.1002/oms.1210240103 . [all data]

Larson and McMahon, 1983
Larson, J.W.; McMahon, T.B., Strong hydrogen bonding in gas-phase anions. An ion cyclotron resonance determination of fluoride binding energetics to bronsted acids from gas-phase fluoride exchange equilibria measurements, J. Am. Chem. Soc., 1983, 105, 2944. [all data]

Larson and McMahon, 1984, 2
Larson, J.W.; McMahon, T.B., Hydrogen bonding in gas phase anions. An experimental investigation of the interaction between chloride ion and bronsted acids from ICR chloride exchange equilibria, J. Am. Chem. Soc., 1984, 106, 517. [all data]

Larson and McMahon, 1984, 3
Larson, J.W.; McMahon, T.B., Gas phase negative ion chemistry of alkylchloroformates, Can. J. Chem., 1984, 62, 675. [all data]

Wenthold and Squires, 1995
Wenthold, P.G.; Squires, R.R., Bond dissociation energies of F2(-) and HF2(-). A gas-phase experimental and G2 theoretical study, J. Phys. Chem., 1995, 99, 7, 2002, https://doi.org/10.1021/j100007a034 . [all data]

Heni and Illenberger, 1985
Heni, M.; Illenberger, E., The stability of the bifluoride ion (HF2-) in the gas phase, J. Chem. Phys., 1985, 83, 6056. [all data]

Berkowitz, Ellison, et al., 1994
Berkowitz, J.; Ellison, G.B.; Gutman, D., Three methods to measure RH bond energies, J. Phys. Chem., 1994, 98, 2744. [all data]

Arshadi, Yamdagni, et al., 1970
Arshadi, M.; Yamdagni, R.; Kebarle, P., Hydration of Halide Negative Ions in the Gas Phase. II. Comparison of Hydration Energies for the Alkali Positive and Halide Negative Ions, J. Phys. Chem., 1970, 74, 7, 1475, https://doi.org/10.1021/j100702a014 . [all data]

Tiedemann, Anderson, et al., 1979
Tiedemann, P.W.; Anderson, S.L.; Ceyer, S.T.; Hirooka, T.; Ng, C.Y.; Mahan, B.H.; Lee, Y.T., Proton affinities of hydrogen halides determined by the molecular beam photoionization method, J. Chem. Phys., 1979, 71, 605. [all data]


Notes

Go To: Top, Ion clustering data, References