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

Hydrogen bromide

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 bromide = (Bromine anion bullet Hydrogen bromide)

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

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar86.2 ± 8.4kJ/molTDAsCaldwell and Kebarle, 1985gas phase; B,M
Deltar73.2kJ/molFADavidson, Fehsenfeld, et al., 1977gas phase; From thermochemical cycle,switching reaction(Br-/NO3-HNO3/HBr); DG>, «DELTA»rH>; M
Quantity Value Units Method Reference Comment
Deltar93.3J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M
Deltar92.J/mol*KFADavidson, Fehsenfeld, et al., 1977gas phase; From thermochemical cycle,switching reaction(Br-/NO3-HNO3/HBr); DG>, «DELTA»rH>; M
Quantity Value Units Method Reference Comment
Deltar58. ± 11.kJ/molTDAsCaldwell and Kebarle, 1985gas phase; B

Free energy of reaction

DeltarG° (kJ/mol) T (K) Method Reference Comment
39.367.FADavidson, Fehsenfeld, et al., 1977gas phase; From thermochemical cycle,switching reaction(Br-/NO3-HNO3/HBr); DG>, «DELTA»rH>; M

(Bromine anion bullet Hydrogen bromide) + Hydrogen bromide = (Bromine anion bullet 2Hydrogen bromide)

By formula: (Br- bullet HBr) + HBr = (Br- bullet 2HBr)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar46.0kJ/molPHPMSCaldwell and Kebarle, 1985gas phase; M
Quantity Value Units Method Reference Comment
Deltar71.1J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; M

(Bromine anion bullet Sulfur dioxide) + Hydrogen bromide = (Bromine anion bullet Hydrogen bromide bullet Sulfur dioxide)

By formula: (Br- bullet O2S) + HBr = (Br- bullet HBr bullet O2S)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar51.0kJ/molPHPMSCaldwell and Kebarle, 1985gas phase; From thermochemical cycle,switching reaction(Br- HBr)SO2; M
Quantity Value Units Method Reference Comment
Deltar80.3J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; From thermochemical cycle,switching reaction(Br- HBr)SO2; M

Methyl cation + Hydrogen bromide = (Methyl cation bullet Hydrogen bromide)

By formula: CH3+ + HBr = (CH3+ bullet HBr)

Quantity Value Units Method Reference Comment
Deltar232.kJ/molPHPMSMcMahon, Heinis, et al., 1988gas phase; switching reaction(CH3+)N2, Entropy change calculated or estimated, uses MCA(N2) = 202. kJ/mol; Foster, Williamson, et al., 1974; M

HBr+ + Hydrogen bromide = (HBr+ bullet Hydrogen bromide)

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

Quantity Value Units Method Reference Comment
Deltar96.kJ/molPITiedemann, Anderson, et al., 1979gas phase; M

Iodide + Hydrogen bromide = (Iodide bullet Hydrogen bromide)

By formula: I- + HBr = (I- bullet HBr)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity Value Units Method Reference Comment
Deltar67.4 ± 8.4kJ/molTDEqCaldwell and Kebarle, 1985gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar82.0J/mol*KPHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(I-)SO2; M
Quantity Value Units Method Reference Comment
Deltar43. ± 11.kJ/molTDEqCaldwell and Kebarle, 1985gas phase; B

Free energy of reaction

DeltarG° (kJ/mol) T (K) Method Reference Comment
42.7300.PHPMSCaldwell and Kebarle, 1985gas phase; switching reaction(I-)SO2; M

NO3 anion + Hydrogen bromide = (NO3 anion bullet Hydrogen bromide)

By formula: NO3- + HBr = (NO3- bullet HBr)

Quantity Value Units Method Reference Comment
Deltar96.J/mol*KN/ADavidson, Fehsenfeld, et al., 1977gas phase; switching reaction(NO3-)HNO3, Entropy change calculated or estimated, DG<, «DELTA»rH<; M
Quantity Value Units Method Reference Comment
Deltar73. ± 16.kJ/molTDEqDavidson, Fehsenfeld, et al., 1977gas phase; Anchored to HBr..Br- in Caldwell and Kebarle, 1985.; B

Free energy of reaction

DeltarG° (kJ/mol) T (K) Method Reference Comment
53.1367.FADavidson, Fehsenfeld, et al., 1977gas phase; switching reaction(NO3-)HNO3, Entropy change calculated or estimated, DG<, «DELTA»rH<; M

(NO3 anion bullet Nitric acid) + Hydrogen bromide = (NO3 anion bullet Hydrogen bromide bullet Nitric acid)

By formula: (NO3- bullet HNO3) + HBr = (NO3- bullet HBr bullet HNO3)

Quantity Value Units Method Reference Comment
Deltar66.9kJ/molFADavidson, Fehsenfeld, et al., 1977gas phase; switching reaction(NO3-)2HNO3; M
Quantity Value Units Method Reference Comment
Deltar95.8J/mol*KFADavidson, Fehsenfeld, et al., 1977gas phase; switching reaction(NO3-)2HNO3; M
Quantity Value Units Method Reference Comment
Deltar38.kJ/molFADavidson, Fehsenfeld, et al., 1977gas phase; switching reaction(NO3-)2HNO3; 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.

Caldwell and Kebarle, 1985
Caldwell, G.; Kebarle, P., The hydrogen bond energies of the bihalide ions XHX- and YHX-, Can. J. Chem., 1985, 63, 1399. [all data]

Davidson, Fehsenfeld, et al., 1977
Davidson, J.A.; Fehsenfeld, F.C.; Howard, C.J., The heats of formation of NO3- and NO3- association complexes with HNO3 and HBr, Int. J. Chem. Kinet., 1977, 9, 17. [all data]

McMahon, Heinis, et al., 1988
McMahon, T.; Heinis, T.; Nicol, G.; Hovey, J.K.; Kebarle, P., Methyl Cation Affinities, J. Am. Chem. Soc., 1988, 110, 23, 7591, https://doi.org/10.1021/ja00231a002 . [all data]

Foster, Williamson, et al., 1974
Foster, M.S.; Williamson, A.D.; Beauchamp, J.L., Photoionization mass spectrometry of trans-azomethane, Int. J. Mass Spectrom. Ion Phys., 1974, 15, 429. [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