Ethene, 1,2-dibromo-, (Z)-

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Phase change 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:
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
9.70314.AStephenson and Malanowski, 1987Based on data from 299. to 351. K. See also Noyes, Noyes, et al., 1950 and Dykyj, 1970.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
299.39 to 350.794.6971655.723-35.019Noyes, Noyes, et al., 1950Coefficents calculated by NIST from author's data.

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

Ethene, 1,2-dibromo-, (E)- = Ethene, 1,2-dibromo-, (Z)-

By formula: C2H2Br2 = C2H2Br2

Quantity Value Units Method Reference Comment
Δr-0.25 ± 0.33kcal/molEqkCraig, Piper, et al., 1971gas phase
Δr0.10 ± 0.16kcal/molKinDowling, Puranik, et al., 1957gas phase

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 compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV) Method Reference Comment
9.63 ± 0.01SSchander and Russell, 1976LLK
9.32 ± 0.02PEChadwick, Frost, et al., 1972LLK
9.45 ± 0.02PIMomigny, 1960RDSH
9.45PIBralsford, Harris, et al., 1960RDSH
9.63PEWittel and Bock, 1974Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C2H2Br+11.44 ± 0.05BrEIMomigny, 1961RDSH

References

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

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Noyes, Noyes, et al., 1950
Noyes, Richard M.; Noyes, Winninette A.; Steinmetz, Hyman, Vapor Pressures of cis and trans Disubstituted Ethylenes, J. Am. Chem. Soc., 1950, 72, 1, 33-34, https://doi.org/10.1021/ja01157a008 . [all data]

Dykyj, 1970
Dykyj, J., Petrochemica, 1970, 10, 2, 51. [all data]

Craig, Piper, et al., 1971
Craig, N.C.; Piper, L.G.; Wheeler, V.L., Thermodynamics of cis-trans isomerizations. II. The 1-chloro-2-fluoroethylenes, 1,2-difluorocyclopropanes, and related molecules, J. Phys. Chem., 1971, 75, 1453-1460. [all data]

Dowling, Puranik, et al., 1957
Dowling, J.M.; Puranik, P.G.; Meister, A.G., Vibrational spectra, potential constants, and calculated thermodynamic properties of cis- and trans-BrHC=CHBr, and cis- and trans-BrDC=CDBr, J. Chem. Phys., 1957, 26, 233-240. [all data]

Schander and Russell, 1976
Schander, J.; Russell, B.R., Vacuum ultraviolet spectra of bromoethylene and dibromoethylenes, J. Am. Chem. Soc., 1976, 98, 6900. [all data]

Chadwick, Frost, et al., 1972
Chadwick, D.; Frost, D.C.; Katrib, A.; McDowell, C.A.; McLean, R.A.N., Photoelectron spectra of some bromoethylenes and 2-bromopropene, Can. J. Chem., 1972, 50, 2642. [all data]

Momigny, 1960
Momigny, J., Les potentials d'ionisation des dihalogenoethylenes cis et trans, Bull. Classe Sci. Acad. Roy. Belg., 1960, 46, 686. [all data]

Bralsford, Harris, et al., 1960
Bralsford, R.; Harris, P.V.; Price, W.C., The effect of fluorine on the electronic spectra and ionization potentials of molecules, Proc. Roy. Soc. (London), 1960, A258, 459. [all data]

Wittel and Bock, 1974
Wittel, K.; Bock, H., Photoelektronenspekten und molekuleigenschaften. XXVII. Chlor- und bromathylene- beispiele fur anderungen in π- und σ-Systemen, Chem. Ber., 1974, 107, 317. [all data]

Momigny, 1961
Momigny, J., Comportement des dihalogenoethylenes cis et trans sous l'impact electronique, Bull. Soc. Chim. Belges, 1961, 70, 241. [all data]


Notes

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