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2-Butyne

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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 as indicated in comments:
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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Individual Reactions

C4H5- + Hydrogen cation = 2-Butyne

By formula: C4H5- + H+ = C4H6

Quantity Value Units Method Reference Comment
Deltar1628. ± 8.8kJ/molG+TSGal, Decouzon, et al., 2001gas phase; Acid: MeC«equiv»CMe; B
Deltar1628. ± 14.kJ/molG+TSN/Agas phase; Measured vs pyridine; B
Quantity Value Units Method Reference Comment
Deltar1597. ± 8.4kJ/molIMREGal, Decouzon, et al., 2001gas phase; Acid: MeC«equiv»CMe; B
Deltar1596. ± 13.kJ/molIMREN/Agas phase; Measured vs pyridine; B

2Hydrogen + 2-Butyne = Butane

By formula: 2H2 + C4H6 = C4H10

Quantity Value Units Method Reference Comment
Deltar-272.4 ± 1.3kJ/molChydConn, Kistiakowsky, et al., 1939gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -274.4 ± 0.54 kJ/mol; At 355 K; ALS

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.

Gal, Decouzon, et al., 2001
Gal, J.F.; Decouzon, M.; Maria, P.C.; Gonzalez, A.I.; Mo, O.; Yanez, M.; El Chaouch, S.; Guillemin, J.C., Acidity trends in alpha,beta-unsaturated alkanes, silanes, germanes, and stannanes, J. Am. Chem. Soc., 2001, 123, 26, 6353-6359, https://doi.org/10.1021/ja004079j . [all data]

Conn, Kistiakowsky, et al., 1939
Conn, J.B.; Kistiakowsky, G.B.; Smith, E.A., Heats of organic reactions. VIII. Some further hydrogenations, including those of some acetylenes, J. Am. Chem. Soc., 1939, 61, 1868-1876. [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]


Notes

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