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2-Butene, (Z)-

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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 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

2-Butene, (Z)- = 2-Butene, (E)-

By formula: C4H8 = C4H8

Quantity Value Units Method Reference Comment
Deltar-0.9 ± 0.5kcal/molAVGN/AAverage of 7 values; Individual data points

Hydrogen bromide + 2-Butene, (Z)- = Butane, 2-bromo-

By formula: HBr + C4H8 = C4H9Br

Quantity Value Units Method Reference Comment
Deltar-18.42 ± 0.12kcal/molCmLacher, Billings, et al., 1952gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -18.3 ± 1.6 kcal/mol; Heat of Hydrobromination at 373 K

Hydrogen + 2-Butene, (Z)- = Butane

By formula: H2 + C4H8 = C4H10

Quantity Value Units Method Reference Comment
Deltar-28.33 ± 0.10kcal/molChydKistiakowsky, Ruhoff, et al., 1935gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -28.570 ± 0.019 kcal/mol; At 355 °K

1-Butene = 2-Butene, (Z)-

By formula: C4H8 = C4H8

Quantity Value Units Method Reference Comment
Deltar-2.54 ± 0.49kcal/molEqkHappel, Hnatow, et al., 1971gas phase
Deltar-1.95kcal/molCisoLevanova and Andreevskii, 1964gas phase; At 420.3 K

2-Butene, (Z)- + Bromine = Erythro-2,3-dibromobutane

By formula: C4H8 + Br2 = C4H8Br2

Quantity Value Units Method Reference Comment
Deltar-30.18 ± 0.20kcal/molCmConn, Kistiakowsky, et al., 1938gas phase; At 355 °K

Butane, 2-chloro- = 2-Butene, (Z)- + Hydrogen chloride

By formula: C4H9Cl = C4H8 + HCl

Quantity Value Units Method Reference Comment
Deltar16.05kcal/molEqkLevanova and Andreevskii, 1964gas phase; At 420 K

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.

Lacher, Billings, et al., 1952
Lacher, J.R.; Billings, T.J.; Campion, D.E., Vapor phase heats of hydrobromination of the isomeric butenes, J. Am. Chem. Soc., 1952, 74, 5291-52. [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]

Kistiakowsky, Ruhoff, et al., 1935
Kistiakowsky, G.B.; Ruhoff, J.R.; Smith, H.A.; Vaughan, W.E., Heats of organic reactions. II. Hydrogenation of some simpler olefinic hydrocarbons, J. Am. Chem. Soc., 1935, 57, 876-882. [all data]

Happel, Hnatow, et al., 1971
Happel, J.; Hnatow, M.A.; Mezaki, R., Isomerization equilibrium constants of n-butenes, J. Chem. Eng. Data, 1971, 16, 206-209. [all data]

Levanova and Andreevskii, 1964
Levanova, S.V.; Andreevskii, D.N., The equilibrium of 2-chlorobutane dehydrochlorination, Neftekhimiya, 1964, 4, 329-336. [all data]

Conn, Kistiakowsky, et al., 1938
Conn, J.B.; Kistiakowsky, G.B.; Smith, E.A., Heats of organic reactions. VII. Addition of halogens to olefins, J. Am. Chem. Soc., 1938, 60, 2764-2771. [all data]


Notes

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