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Butanoic acid, 3-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 by: Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Deltafgas-502.5 ± 6.6kJ/molN/AHancock, Watson, et al., 1954Value computed using «DELTA»fHliquid° value of -561.6±5.9 kj/mol from Hancock, Watson, et al., 1954 and «DELTA»vapH° value of 59.1±3 kj/mol from sec-alkanoic correlation.

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-561.6 ± 5.9kJ/molCcbHancock, Watson, et al., 1954Reanalyzed by Cox and Pilcher, 1970, Original value = -561. kJ/mol; ALS
Quantity Value Units Method Reference Comment
Deltacliquid-2835.1 ± 5.9kJ/molCcbHancock, Watson, et al., 1954Reanalyzed by Cox and Pilcher, 1970, Original value = -2840. kJ/mol; Corresponding «DELTA»fliquid = -561.62 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
197.1298.von Reis, 1881T = 290 to 470 K.; 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 by: John E. Bartmess

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

C5H9O2- + Hydrogen cation = Butanoic acid, 3-methyl-

By formula: C5H9O2- + H+ = C5H10O2

Quantity Value Units Method Reference Comment
Deltar1446. ± 8.8kJ/molG+TSCaldwell, Renneboog, et al., 1989gas phase
Deltar1451. ± 8.8kJ/molG+TSTaft and Topsom, 1987gas phase
Quantity Value Units Method Reference Comment
Deltar1416. ± 8.4kJ/molIMRECaldwell, Renneboog, et al., 1989gas phase
Deltar1421. ± 8.4kJ/molIMRETaft and Topsom, 1987gas phase

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.

Hancock, Watson, et al., 1954
Hancock, C.K.; Watson, G.M.; Gilby, R.F., Heats of combustion of five-carbon fatty acids and their methyl and ethyl esters, J. Phys. Chem., 1954, 58, 127-129. [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]

von Reis, 1881
von Reis, M.A., Die specifische Wärme flüssiger organischer Verbindungen und ihre Beziehung zu deren Moleculargewicht, Ann. Physik [3], 1881, 13, 447-464. [all data]

Caldwell, Renneboog, et al., 1989
Caldwell, G.; Renneboog, R.; Kebarle, P., Gas Phase Acidities of Aliphatic Carboxylic Acids, Based on Measurements of Proton Transfer Equilibria, Can. J. Chem., 1989, 67, 4, 661, https://doi.org/10.1139/v89-092 . [all data]

Taft and Topsom, 1987
Taft, R.W.; Topsom, R.D., The Nature and Analysis of Substituent Effects, Prog. Phys. Org. Chem., 1987, 16, 1. [all data]


Notes

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