Cyanogen bromide

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Condensed phase 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfsolid33.6 ± 1.0kcal/molCmLord and Woolf, 1954Reanalyzed by Pedley, Naylor, et al., 1986, Original value = 32.5 kcal/mol; Heat of hydrolysis

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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen 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

2Sodium hydroxide + Cyanogen bromide = sodium bromide + Water + CNO.Na

By formula: 2HNaO + CBrN = BrNa + H2O + CNO.Na

Quantity Value Units Method Reference Comment
Δr-56.06 ± 0.17kcal/molCmLord and Woolf, 1954solid phase; Heat of hydrolysis

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

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Quantity Value Units Method Reference Comment
Proton affinity (review)179.2kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity171.9kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
12. ± 1.EIIbuki, Hiraya, et al., 1996LL
11.88PELake and Thompson, 1970RDSH
11.85 ± 0.02PEHeilbronner, Hornung, et al., 1970RDSH
11.84 ± 0.01PIDibeler and Liston, 1967RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
Br+45. ± 2.C+(N+)PIPECOIbuki, Hiraya, et al., 1996LL
Br+16. ± 1.CNEIIbuki, Hiraya, et al., 1996LL
Br+15.52 ± 0.02CNPIDibeler and Liston, 1967RDSH
Br+11.9 ± 0.2CN-EIHerron and Dibeler, 1960RDSH
C+25. ± 1.Br+NEIIbuki, Hiraya, et al., 1996LL
CBr+21. ± 1.NEIIbuki, Hiraya, et al., 1996LL
CBr+17.4 ± 0.2NEIHerron and Dibeler, 1960RDSH
CN+19. ± 1.BrEIIbuki, Hiraya, et al., 1996LL
CN+14.6 ± 0.1Br-EIHerron and Dibeler, 1960RDSH
CN+18.3 ± 0.1BrEIHerron and Dibeler, 1960RDSH
N+28. ± 2.Br+CEIIbuki, Hiraya, et al., 1996LL

References

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, 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.

Lord and Woolf, 1954
Lord, G.; Woolf, A.A., The cyanogen halides. Part III. Their heats of formation and free energies, J. Chem. Soc., 1954, 2546-2551. [all data]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

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]

Ibuki, Hiraya, et al., 1996
Ibuki, T.; Hiraya, A.; Olney, T.N.; Brion, C.E., Ionic photofragmentation (11.5-160 eV) and PIPICO spectroscopy (40-130 eV) of BrCN in the valence shell and bromine 3d regions, Chem. Phys., 1996, 203, 359. [all data]

Lake and Thompson, 1970
Lake, R.F.; Thompson, H., The photoelectron spectra of some molecules containing the C N group, Proc. Roy. Soc. (London), 1970, A317, 187. [all data]

Heilbronner, Hornung, et al., 1970
Heilbronner, E.; Hornung, V.; Muszkat, K.A., Die Photoelektron-Spektren von Chlor-, Brom- und Jodcyan, Helv. Chim. Acta, 1970, 53, 347. [all data]

Dibeler and Liston, 1967
Dibeler, V.H.; Liston, S.K., Mass-spectrometric study of photoionization. VIII.Dicyanogen and the cyanogen halides, J. Chem. Phys., 1967, 47, 4548. [all data]

Herron and Dibeler, 1960
Herron, J.T.; Dibeler, V.H., Electron impact study of the cyanogen halides, J. Am. Chem. Soc., 1960, 82, 1555. [all data]


Notes

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