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Hydrogen bromide

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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:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to BrH+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)11.68 ± 0.03eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)584.2kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity557.7kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
11.71PEKimura, Katsumata, et al., 1981LLK
11.66 ± 0.02PITiedemann, Anderson, et al., 1979LLK
11.67EVALHuber and Herzberg, 1979LLK
11.645 ± 0.005PEDelwiche, Natalis, et al., 1973LLK
11.677 ± 0.004DERHaugh and Bayes, 1971LLK
11.67 ± 0.01PELempka, Passmore, et al., 1968RDSH
11.71 ± 0.01PEFrost, McDowell, et al., 1967RDSH
11.68 ± 0.03PIWatanabe, 1957RDSH

De-protonation reactions

Bromine anion + Hydrogen cation = Hydrogen bromide

By formula: Br- + H+ = HBr

Quantity Value Units Method Reference Comment
Deltar1353.69 ± 0.21kJ/molD-EABlondel, Cacciani, et al., 1989gas phase; reported: 27129.170±0.015 cm-1; B
Deltar1353. ± 8.8kJ/molG+TSTaft and Bordwell, 1988gas phase; B
Deltar1341.4kJ/molN/ACheck, Faust, et al., 2001gas phase; F-; ; «DELTA»S(acid)=19.2; «DELTA»S(EA)=6.4; B
Quantity Value Units Method Reference Comment
Deltar1331.8 ± 0.63kJ/molH-TSBlondel, Cacciani, et al., 1989gas phase; reported: 27129.170±0.015 cm-1; B
Deltar1331. ± 8.4kJ/molIMRETaft and Bordwell, 1988gas phase; B
Deltar1319.6kJ/molN/ACheck, Faust, et al., 2001gas phase; F-; ; «DELTA»S(acid)=19.2; «DELTA»S(EA)=6.4; B

References

Go To: Top, 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.

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]

Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S., Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [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]

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]

Delwiche, Natalis, et al., 1973
Delwiche, J.; Natalis, P.; Momigny, J.; Collin, J.E., On the photoelectron spectra of HBr DBr, J. Electron Spectrosc. Relat. Phenom., 1973, 1, 219. [all data]

Haugh and Bayes, 1971
Haugh, M.J.; Bayes, K.D., Predissociation and dissociation energy of HBr+, J. Phys. Chem., 1971, 75, 1472. [all data]

Lempka, Passmore, et al., 1968
Lempka, H.J.; Passmore, T.R.; Price, W.C., The photoelectron spectra and ionized states of the halogen acids, Proc. Roy. Soc. (London), 1968, A304, 53. [all data]

Frost, McDowell, et al., 1967
Frost, D.C.; McDowell, C.A.; Vroom, D.A., Photoelectron spectra of the halogens and the hydrogen halides, J. Chem. Phys., 1967, 46, 4255. [all data]

Watanabe, 1957
Watanabe, K., Ionization potentials of some molecules, J. Chem. Phys., 1957, 26, 542. [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, https://doi.org/10.1103/PhysRevA.40.3698 . [all data]

Taft and Bordwell, 1988
Taft, R.W.; Bordwell, F.G., Structural and Solvent Effects Evaluated from Acidities Measured in Dimethyl Sulfoxide and in the Gas Phase, Acc. Chem. Res., 1988, 21, 12, 463, https://doi.org/10.1021/ar00156a005 . [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, https://doi.org/10.1021/jp011945l . [all data]


Notes

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