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2-Butene, 2-methyl-

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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
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity Value Units Method Reference Comment
Deltafgas-41.5 ± 0.88kJ/molEqkWiberg and Hao, 1991Heat of hydration; ALS
Deltafgas-41.0kJ/molN/AGood and Smith, 1979Value computed using «DELTA»fHliquid° value of -68.1±1.3 kj/mol from Good and Smith, 1979 and «DELTA»vapH° value of 27.1 kj/mol from Wiberg and Hao, 1991.; DRB

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
111.00 ± 0.33319.04Scott D.W., 1949GT
122.97 ± 0.37362.37
133.93 ± 0.40402.26
143.05 ± 0.43436.18
152.05 ± 0.46471.09

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
105.02298.15Scott D.W., 1949Recommended results of statistical thermodynamics calculation are in good agreement with experimental data.; GT
105.52300.
133.60400.
159.28500.
181.67600.
201.00700.
217.78800.
232.30900.
244.971000.
255.891100.
265.471200.
273.711300.
280.911400.
287.151500.

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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Deltafliquid-68.6 ± 0.8kJ/molEqkWiberg and Hao, 1991Heat of hydration; ALS
Deltafliquid-68.1 ± 1.3kJ/molCcbGood and Smith, 1979ALS
Quantity Value Units Method Reference Comment
Deltacliquid-3328.6 ± 1.3kJ/molCcbGood and Smith, 1979Corresponding «DELTA»fliquid = -68.08 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid251.2J/mol*KN/AChao, Hall, et al., 1983DH
liquid251.04J/mol*KN/ATodd, Oliver, et al., 1947DH
liquid248.9J/mol*KN/AParks and Huffman, 1930Extrapolation below 90 K, 13.12 cal/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
152.8298.15Chao, Hall, et al., 1983T = 13 to 301 K.; DH
152.80298.15Todd, Oliver, et al., 1947T = 12 to 300 K.; DH
146.4293.9Parks and Huffman, 1930T = 93 to 294 K. Value is unsmoothed experimental datum.; DH

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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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-Methyl-1-butene = 2-Butene, 2-methyl-

By formula: C5H10 = C5H10

Quantity Value Units Method Reference Comment
Deltar-6.7 ± 3.0kJ/molEqkRihko, Linnekoski, et al., 1994liquid phase; solvent: Methanol/H+; ALS
Deltar-8.0 ± 1.4kJ/molEqkRihko, Linnekoski, et al., 1994liquid phase; solvent: Ethanol/H+; ALS

C3H9Si+ + 2-Butene, 2-methyl- = (C3H9Si+ bullet 2-Butene, 2-methyl-)

By formula: C3H9Si+ + C5H10 = (C3H9Si+ bullet C5H10)

Quantity Value Units Method Reference Comment
Deltar160.kJ/molPHPMSLi and Stone, 1989gas phase; condesation; M
Quantity Value Units Method Reference Comment
Deltar201.J/mol*KPHPMSLi and Stone, 1989gas phase; condesation; M

2-Butene, 2-methyl- + Methyl Alcohol = Butane, 2-methoxy-2-methyl-

By formula: C5H10 + CH4O = C6H14O

Quantity Value Units Method Reference Comment
Deltar-32.8kJ/molEqkSerda, Izquierdo, et al., 1995liquid phase; ALS
Deltar-26.8 ± 2.3kJ/molEqkRihko, Linnekoski, et al., 1994liquid phase; solvent: Alcohol/alkane mixture; ALS

2-Butene, 2-methyl- + Hydrogen chloride = Butane, 2-chloro-2-methyl-

By formula: C5H10 + HCl = C5H11Cl

Quantity Value Units Method Reference Comment
Deltar-59.08 ± 0.92kJ/molCmArnett and Pienta, 1980liquid phase; solvent: Methylene chloride; Hydrochloroination; ALS

2-Butene, 2-methyl- + Ethanol = Butane, 2-ethoxy-2-methyl-

By formula: C5H10 + C2H6O = C7H16O

Quantity Value Units Method Reference Comment
Deltar-27.3 ± 6.7kJ/molEqkRihko, Linnekoski, et al., 1994liquid phase; solvent: Alcohol/alkane mixture; ALS

2-Butene, 2-methyl- + Trifluoroacetic acid = Acetic acid, trifluoro-, 2,2-dimethylpropyl ester

By formula: C5H10 + C2HF3O2 = C7H11F3O2

Quantity Value Units Method Reference Comment
Deltar-38.1 ± 0.2kJ/molCmWiberg and Hao, 1991liquid phase; Trifluoroacetolysis; ALS

2-Butene, 2-methyl- = 1-Butene, 3-methyl-

By formula: C5H10 = C5H10

Quantity Value Units Method Reference Comment
Deltar14.2 ± 1.5kJ/molEqkRadyuk, Kabo, et al., 1973gas phase; Heat of isomerization at 622 K; ALS

2-Butene, 2-methyl- = 2-Methyl-1-butene

By formula: C5H10 = C5H10

Quantity Value Units Method Reference Comment
Deltar8.08 ± 0.50kJ/molEqkRadyuk, Kabo, et al., 1973gas phase; Heat of isomerization at 562 K; ALS

2-Butene, 2-methyl- + Bromine = 2,3-dibromo-2-methylbutane

By formula: C5H10 + Br2 = C5H10Br2

Quantity Value Units Method Reference Comment
Deltar-127.2 ± 0.84kJ/molCmConn, Kistiakowsky, et al., 1938gas phase; At 355 °K; ALS

Hydrogen + 2-Butene, 2-methyl- = Butane, 2-methyl-

By formula: H2 + C5H10 = C5H12

Quantity Value Units Method Reference Comment
Deltar-111.6 ± 0.3kJ/molChydKistiakowsky, Ruhoff, et al., 1936gas phase; ALS

2-Butene, 2-methyl- + Methyl Alcohol = Butane, 1-methoxy-2-methyl-

By formula: C5H10 + CH4O = C6H14O

Quantity Value Units Method Reference Comment
Deltar-32.8 ± 1.4kJ/molEqkSerda, Izquierdo, et al., 1995liquid phase; ALS

Butane, 2-ethoxy-2-methyl- = 2-Butene, 2-methyl- + Ethanol

By formula: C7H16O = C5H10 + C2H6O

Quantity Value Units Method Reference Comment
Deltar34.13 ± 0.81kJ/molEqkSharonov, Rozhnov, et al., 1995liquid phase; ALS

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.

Wiberg and Hao, 1991
Wiberg, K.B.; Hao, S., Enthalpies of hydration of alkenes. 4. Formation of acyclic tert-alcohols, J. Org. Chem., 1991, 56, 5108-5110. [all data]

Good and Smith, 1979
Good, W.D.; Smith, N.K., The enthalpies of combustion of the isomeric pentenes in the liquid state. A warning to combustion calorimetrists about sample drying, J. Chem. Thermodyn., 1979, 11, 111-118. [all data]

Scott D.W., 1949
Scott D.W., Thermodynamic properties of three isomeric pentenes, J. Am. Chem. Soc., 1949, 71, 2767-2773. [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]

Todd, Oliver, et al., 1947
Todd, S.S.; Oliver, G.D.; Huffman, H.M., The heat capacities, heats of fusion and entropies of the six pentenes, J. Am. Chem. Soc., 1947, 69, 1519-1525. [all data]

Parks and Huffman, 1930
Parks, G.S.; Huffman, H.M., Thermal data on organic compounds. IX. A study of the effect of unsaturation on the heat capacities, entropies and free energies of some hydrocarbons and other compounds, J. Am. Chem. Soc., 1930, 52, 4381-4391. [all data]

Rihko, Linnekoski, et al., 1994
Rihko, L.K.; Linnekoski, J.A.; Krause, A.O., Reaction equilibria in the synthesis of 2-methoxy-2-methylbutane and 2-ethyoxy-2-methylbutane in the liquid phase, J. Chem. Eng. Data, 1994, 39, 700-704. [all data]

Li and Stone, 1989
Li, X.; Stone, J.A., Determination of the beta silicon effect from a mass spectrometric study of the association of trimethylsilylium ion with alkenes, J. Am. Chem. Soc., 1989, 111, 15, 5586, https://doi.org/10.1021/ja00197a013 . [all data]

Serda, Izquierdo, et al., 1995
Serda, J.A.; Izquierdo, J.F.; Tejero, J.; Cunill, F.; Iborra, M., Equilibrium and thermodynamics for 2-methyl-2-methoxybutane liquid-phase decomposition, Thermochim. Acta, 1995, 259, 111-120. [all data]

Arnett and Pienta, 1980
Arnett, E.M.; Pienta, N.J., Stabilities of carbonium ions in solution. 12. Heats of formation of alkyl chlorides as an entree to heats of solvation of aliphatic carbonium ions, J. Am. Chem. Soc., 1980, 102, 3329-3334. [all data]

Radyuk, Kabo, et al., 1973
Radyuk, Z.A.; Kabo, G.Ya.; Andreevskii, D.N., Isomerization equilibrium and thermodynamic properties of methylbutenes, Neftekhimiya, 1973, 13, 356-360. [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]

Kistiakowsky, Ruhoff, et al., 1936
Kistiakowsky, G.B.; Ruhoff, J.R.; Smith, H.A.; Vaughan, W.E., Heats of organic reactions. III. Hydrogenation of some higher olefins, J. Am. Chem. Soc., 1936, 58, 137-145. [all data]

Sharonov, Rozhnov, et al., 1995
Sharonov, K.G.; Rozhnov, A.M.; Korol'kov, A.V.; Karaseva, S.Y., Enthalpies of formation of 2-methyl-2-ethoxypropane and 2-ethyl-2-ethoxypropane from equilibrium measurements, J. Chem. Thermodyn., 1995, 27, 751-753. [all data]


Notes

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