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2-Butene, (Z)-

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Gas 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Deltafgas-1.83 ± 0.30kcal/molCmProsen, Maron, et al., 1951ALS
Quantity Value Units Method Reference Comment
Deltacgas-647.65 ± 0.29kcal/molCmProsen, Maron, et al., 1951Corresponding «DELTA»fgas = -1.81 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
10.7650.Thermodynamics Research Center, 1997p=1 bar. The difference between recommended values and obtained by [ Aston J.D., 1946] is inside the range of uncertainties of these two statistical calculations. The values of S and Cp calculated by [ Scott R.B., 1944] and [ Kilpatrick J.E., 1946] are little lower than recommended ones.; GT
12.24100.
13.25150.
14.75200.
17.90273.15
19.16298.15
19.25300.
24.553400.
29.551500.
33.917600.
37.682700.
40.935800.
43.752900.
46.2001000.
48.3221100.
50.1671200.
51.7661300.
53.1571400.
54.3691500.
56.7761750.
58.5212000.
59.8142250.
60.7862500.
61.5322750.
62.1103000.

Constant pressure heat capacity of gas

Cp,gas (cal/mol*K) Temperature (K) Reference Comment
16.92 ± 0.39250.Scott R.B., 1944Please also see Kistiakowsky G.B., 1940.; GT
16.99 ± 0.39255.
17.13 ± 0.39260.
17.27 ± 0.40265.
17.42 ± 0.40270.
17.65 ± 0.41275.
17.86 ± 0.41280.
18.13 ± 0.42285.
18.44 ± 0.42290.
18.75 ± 0.43295.
19.39 ± 0.038298.58
19.08 ± 0.44300.
21.09 ± 0.043332.85
23.01 ± 0.045371.24

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: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
liquid52.6cal/mol*KN/AChao, Hall, et al., 1983 
liquid52.560cal/mol*KN/AScott, Ferguson, et al., 1944 
liquid50.880cal/mol*KN/ATodd and Parks, 1936Extrapolation below 90 K, 48.95 J/mol*K.

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
30.4298.15Chao, Hall, et al., 1983T = 5 to 367 K.
31.071299.8Schlinger and Sage, 1952T = 80 to 200°F.
30.151298.15Scott, Ferguson, et al., 1944T = 15 to 300 K.
28.411266.6Todd and Parks, 1936T = 93 to 267 K. Value is unsmoothed experimental datum.

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, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Notes

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

Prosen, Maron, et al., 1951
Prosen, E.J.; Maron, F.W.; Rossini, F.D., Heats of combustion, formation, and insomerization of ten C4 hydrocarbons, J. Res. NBS, 1951, 46, 106-112. [all data]

Thermodynamics Research Center, 1997
Thermodynamics Research Center, Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]

Aston J.D., 1946
Aston J.D., Thermodynamic properties of gaseous 1,3-butadiene and normal butenes above 25 C. Equilibria in the system 1,3-butadiene, n-butenes, and n-butane, J. Chem. Phys., 1946, 14, 67-79. [all data]

Scott R.B., 1944
Scott R.B., Thermodynamic properties of cis-2-butene from 15 to 1500 K, J. Res. Nat. Bur. Stand., 1944, 33, 1-20. [all data]

Kilpatrick J.E., 1946
Kilpatrick J.E., Heat content, free energy function, entropy, and heat capacity of ethylene, propylene, and the four butenes to 1500 K, J. Res. Nat. Bur. Stand, 1946, 37, 163-171. [all data]

Kistiakowsky G.B., 1940
Kistiakowsky G.B., Gaseous heat capacities. III, J. Chem. Phys., 1940, 8, 618-622. [all data]

Chao, Hall, et al., 1983
Chao, J.; Hall, K.R.; Yao, J.M., Thermodynamic properties of simple alkenes, Thermochim. Acta, 1983, 64(3), 285-303. [all data]

Scott, Ferguson, et al., 1944
Scott, R.B.; Ferguson, W.J.; Brickwedde, F.G., Thermodynamic properties of cis-2-butene from 15° to 1,500 K, J. Res. NBS, 1944, 33, 1-20. [all data]

Todd and Parks, 1936
Todd, S.S.; Parks, G.S., Thermal data on organic compounds. XV. Some heat capacity, entropy and free energy data for the isomeric butenes, J. Am. Chem. Soc., 1936, 58, 134-137. [all data]

Schlinger and Sage, 1952
Schlinger, W.G.; Sage, B.H., Isobaric heat capacities at bubble point. cis-2-butene, isopropylbenzene, and n-decane, Ind. Eng. Chem., 1952, 44, 2454-2456. [all data]

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

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, References