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hydrogen fluoride

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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 as indicated in comments:
B - J.E. Bartmess
M - M. M. Meot-Ner (Mautner) and S. G. Lias
ALS - H.Y. Afeefy, J.F. Liebman, and S.E. Stein

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

Fluorine anion + Hydrogen cation = hydrogen fluoride

By formula: F- + H+ = HF

QuantityValueUnitsMethodReferenceComment
Deltar1555. ± 5.kJ/molAVGN/AAverage of 6 out of 7 values; Individual data points
QuantityValueUnitsMethodReferenceComment
Deltar1530.0 ± 0.75kJ/molH-TSBlondel, Delsart, et al., 2001gas phase; Given: 3.4011895(25) eV, or 27432.446(19) cm-1, or 78.433266(577) kcal/mol; B
Deltar1529.4kJ/molH-TSMartin and Hepburn, 2000gas phase; Given: 371.334±0.003 kcal/mol (corr to 298K with data from Wagman, Evans, et al., 1982).H(0K)=370.422±0.003; B
Deltar1530.0 ± 0.75kJ/molH-TSBlondel, Cacciani, et al., 1989gas phase; Reported: 3.401190±0.000004 eV. acidity includes 0.9 kcal 0 to 298 K correction.; B
Deltar1529. ± 8.4kJ/molIMREBierbaum, Schmidt, et al., 1981gas phase; B
Deltar1503.7kJ/molN/ACheck, Faust, et al., 2001gas phase; FeCl3-; ; «DELTA»S(EA)=5.0; B

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

By formula: F- + HF = (F- bullet HF)

Bond type: Hydrogen bond (negative ion to hydride)

QuantityValueUnitsMethodReferenceComment
Deltar192. ± 6.7kJ/molCIDCWenthold and Squires, 1995gas phase; B
Deltar162. ± 8.4kJ/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>145. ± 19.kJ/molTherHeni and Illenberger, 1985gas phase; From CHF=CHF. Outdataed HC2. thermo used. Current value ( Berkowitz, Ellison, et al., 1994) implies Haff>57.; B
QuantityValueUnitsMethodReferenceComment
Deltar91.6J/mol*KN/ALarson and McMahon, 1983gas phase; switching reaction,Thermochemical ladder(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
QuantityValueUnitsMethodReferenceComment
Deltar134. ± 8.4kJ/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° (kJ/mol)T (K)MethodReferenceComment
134.289.ICRLarson and McMahon, 1983gas phase; switching reaction,Thermochemical ladder(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; 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)

QuantityValueUnitsMethodReferenceComment
Deltar91.2 ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M
QuantityValueUnitsMethodReferenceComment
Deltar94.1J/mol*KN/ALarson and McMahon, 1984gas phase; switching reaction(Cl-)SO2, Entropy change calculated or estimated; Larson and McMahon, 1984, 2; M
QuantityValueUnitsMethodReferenceComment
Deltar63.2 ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M

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

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

Bond type: Hydrogen bond (negative ion to hydride)

QuantityValueUnitsMethodReferenceComment
Deltar71.1 ± 8.4kJ/molEstLarson and McMahon, 1984, 3gas phase; Extrapolated from other bihalide data; B
Deltar71.1kJ/molHPMSCaldwell, Masucci, et al., 1989gas phase; M

Iodide + hydrogen fluoride = (Iodide bullet hydrogen fluoride)

By formula: I- + HF = (I- bullet HF)

Bond type: Hydrogen bond (negative ion to hydride)

QuantityValueUnitsMethodReferenceComment
Deltar62.8 ± 8.4kJ/molEstLarson and McMahon, 1984, 3gas phase; Extrapolated from other bihalide data; B
Deltar63.kJ/molPHPMSCaldwell, Masucci, et al., 1989gas phase; M

Carbon tetrafluoride + 2Water = Carbon dioxide + 4hydrogen fluoride

By formula: CF4 + 2H2O = CO2 + 4HF

QuantityValueUnitsMethodReferenceComment
Deltar-174. ± 4.2kJ/molCmGood, Scott, et al., 1956gas phase; HF has 10 moles H2O, see Scott, Good, et al., 1955; ALS
Deltar-174. ± 4.2kJ/molCmScott, Good, et al., 1955gas phase; Heat of hydrolysis; ALS

Hydrogen + Propane, 2-fluoro- = Propane + hydrogen fluoride

By formula: H2 + C3H7F = C3H8 + HF

QuantityValueUnitsMethodReferenceComment
Deltar-84.5 ± 1.3kJ/molChydLacher, Kianpour, et al., 1956gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -88.3 ± 2.9 kJ/mol; %hf298_gas[kcal/mol]=-66.97±0.71; Kolesov and Kozina, 1986; ALS

Hydrogen + Propane, 1-fluoro- = Propane + hydrogen fluoride

By formula: H2 + C3H7F = C3H8 + HF

QuantityValueUnitsMethodReferenceComment
Deltar-92.0 ± 2.1kJ/molChydLacher, Kianpour, et al., 1956gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -95.7 ± 6.7 kJ/mol; %hf298_gas[kcal/mol]=-66.71±0.62; Kolesov and Kozina, 1986; ALS

C4H4F2N6O10 + 6Oxygen + Diethyl oxalate = 10Carbon dioxide + 2hydrogen fluoride + 3Nitrogen + 6Water

By formula: C4H4F2N6O10 + 6O2 + C6H10O4 = 10CO2 + 2HF + 3N2 + 6H2O

QuantityValueUnitsMethodReferenceComment
Deltar-4976.2 ± 2.3kJ/molCcrBaroody and Carpenter, 1973solid phase; Corrected for CODATA value of «DELTA»fH; HF.100H2O; ALS

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

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

Bond type: Hydrogen bond (negative ion to hydride)

QuantityValueUnitsMethodReferenceComment
Deltar71.kJ/molICRLarson and McMahon, 1983gas phase; M

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

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

Bond type: Hydrogen bond (negative ion to hydride)

QuantityValueUnitsMethodReferenceComment
Deltar100.kJ/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)

QuantityValueUnitsMethodReferenceComment
Deltar110.kJ/molICRLarson and McMahon, 1983gas phase; M

Carbonic difluoride + Water = Carbon dioxide + 2hydrogen fluoride

By formula: CF2O + H2O = CO2 + 2HF

QuantityValueUnitsMethodReferenceComment
Deltar-111.8 ± 1.0kJ/molCcrWartenberg, 1949gas phase; solvent: Gas phase;; Corrected for CODATA value of «DELTA»fH; ALS

Ethane, 2-chloro-1,1,1,2-tetrafluoro- + hydrogen fluoride = Ethane, pentafluoro- + Hydrogen chloride

By formula: C2HClF4 + HF = C2HF5 + HCl

QuantityValueUnitsMethodReferenceComment
Deltar-10.5 ± 6.3kJ/molKinCoulson, 1993gas phase; solvent: On solid catalyst; ALS

Ethane, 2-chloro-1,1,1,2-tetrafluoro- + Hydrogen chloride = Ethane, 2,2-dichloro-1,1,1-trifluoro- + hydrogen fluoride

By formula: C2HClF4 + HCl = C2HCl2F3 + HF

QuantityValueUnitsMethodReferenceComment
Deltar-1.7 ± 5.9kJ/molKinCoulson, 1993gas phase; solvent: On solid catalyst; ALS

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

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

QuantityValueUnitsMethodReferenceComment
Deltar62. ± 18.kJ/molPITiedemann, Anderson, et al., 1979gas phase; M

Tetrafluoroethylene + 2Hydrogen = 2carbon + 4hydrogen fluoride

By formula: C2F4 + 2H2 = 2C + 4HF

QuantityValueUnitsMethodReferenceComment
Deltar-618.4 ± 4.6kJ/molChydNeugebauer and Margrave, 1956gas phase; ALS

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

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

QuantityValueUnitsMethodReferenceComment
Deltar140.kJ/molPITiedemann, Anderson, et al., 1979gas phase; «DELTA»rH>; M

Carbon tetrafluoride + 4hydrogen fluoride = Methane + 4fluorine

By formula: CF4 + 4HF = CH4 + 4F2

QuantityValueUnitsMethodReferenceComment
Deltar-1922. ± 13.kJ/molCmJessup, McCoskey, et al., 1955gas phase; ALS

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

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

QuantityValueUnitsMethodReferenceComment
Deltar105. ± 10.kJ/molPITiedemann, Anderson, et al., 1979gas phase; M

Vinyl fluoride + hydrogen fluoride = 1,1-Difluoroethane

By formula: C2H3F + HF = C2H4F2

QuantityValueUnitsMethodReferenceComment
Deltar-50.kJ/molEqkMoore, 1971gas phase; ALS

References

Go To: Top, Reaction thermochemistry data, Notes

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

Blondel, Delsart, et al., 2001
Blondel, C.; Delsart, C.; Goldfarb, F., Electron spectrometry at the mu eV level and the electron affinities of Si and F, J. Phys. B: Atom. Mol. Opt. Phys., 2001, 34, 9, L281-L288. [doi:10.1088/0953-4075/34/9/101] [all data]

Martin and Hepburn, 2000
Martin, J.D.D.; Hepburn, J.W., Faraday Disc. Chem. Soc., 2000, 115, 416. [all data]

Wagman, Evans, et al., 1982
Wagman, D.D.; Evans, W.H.; Parker, V.B.; Schumm, R.H.; Halow, I.; Bailey, S.M.; Churney, K.L.; Nuttall, R.L., The NBS Tables of Chemical Thermodynamic Properties (NBS Tech Note 270), J. Phys. Chem. Ref. Data, Supl. 1, 1982, 11. [all data]

Blondel, Cacciani, et al., 1989
Blondel, C.; Cacciani, P.; Delsart, C.; Trainham, R., High Resolution Determination of the Electron Affinity of Fluorine and Bromine using Crossed Ion and Laser Beams, Phys. Rev. A, 1989, 40, 7, 3698. [doi:10.1103/PhysRevA.40.3698] [all data]

Bierbaum, Schmidt, et al., 1981
Bierbaum, V.M.; Schmidt, R.J.; DePuy, C.H.; Mead, R.H.; Schulz, P.A.; Lineberger, W.C., Reactions of carbanions with triplet and singlet molecular oxygen, J. Am. Chem. Soc., 1981, 103, 6262. [all data]

Check, Faust, et al., 2001
Check, C.E.; Faust, T.O.; Bailey, J.M.; Wright, B.J.; Gilbert, T.M.; Sunderlin, L.S., Addition of Polarization and Diffuse Functions to the LANL2DZ Basis Set for P-Block Elements, J. Phys. Chem. A,, 2001, 105, 34, 8111. [doi:10.1021/jp011945l] [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. [doi:10.1021/j100007a034] [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]

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. [doi:10.1021/j100702a014] [all data]

Larson and McMahon, 1984
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, 2
Larson, J.W.; McMahon, T.B., Gas phase negative ion chemistry of alkylchloroformates, Can. J. Chem., 1984, 62, 675. [all data]

Larson and McMahon, 1984, 3
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. [doi:10.1002/oms.1210240103] [all data]

Good, Scott, et al., 1956
Good, W.D.; Scott, D.W.; Waddington, G., Combustion calorimetry of organic fluorine compounds by a rotating-bomb method, J. Phys. Chem., 1956, 60, 1080-1089. [all data]

Scott, Good, et al., 1955
Scott, D.W.; Good, W.D.; Waddington, G., Heat of formation of tetrafluoromethane from combustion calorimetry of polytetrafluoroethylene, J. Am. Chem. Soc., 1955, 77, 245-246. [all data]

Lacher, Kianpour, et al., 1956
Lacher, J.R.; Kianpour, A.; Park, J.D., Reaction heats of organic halogen compounds. VI. The catalytic hydrogenation of some alkyl fluorides, J. Phys. Chem., 1956, 60, 1454-1455. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Kolesov and Kozina, 1986
Kolesov, V.P.; Kozina, M.P., Thermochemistry of organic and organohalogen compounds, Russ. Chem. Rev., 1986, 55, 912. [all data]

Baroody and Carpenter, 1973
Baroody, E.E.; Carpenter, G.A., Enthalpies of formation of some fluorodinitroethyl derivatives and 2,2',4,4',6,6'-hexanitroazobenzene, J. Chem. Eng. Data, 1973, 18, 28-36. [all data]

Wartenberg, 1949
Wartenberg, H.V., Die bildungswarme einiger fluorid, Z. Anorg. Chem., 1949, 258, 354-360. [all data]

Coulson, 1993
Coulson, D.R., Kinetics of the fluorination/chlorination of 1-chloro-1,2,2,2-tetrafluoroethane, J. Catal., 1993, 142, 289-302. [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]

Neugebauer and Margrave, 1956
Neugebauer, C.A.; Margrave, J.L., The heats of formation of tetrafluoroethylene, tetrafluoromethane and 1,1-difluoroethylene, J. Phys. Chem., 1956, 60, 1318-1321. [all data]

Jessup, McCoskey, et al., 1955
Jessup, R.S.; McCoskey, R.E.; Nelson, R.A., The heat of formation of tetrafluoromethane, J. Am. Chem. Soc., 1955, 77, 244-245. [all data]

Moore, 1971
Moore, L.O., Kinetics and thermodynamic data for the hydrogen fluoride addition to vinyl fluoride, Can. J. Chem., 1971, 49, 2471-2475. [all data]


Notes

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