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Propanoic acid, 2,2-dimethyl-

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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
Deltafsolid-564.5 ± 5.9kJ/molCcbHancock, Watson, et al., 1954Reanalyzed by Cox and Pilcher, 1970, Original value = -565. kJ/mol; ALS
Quantity Value Units Method Reference Comment
Deltacsolid-2832.1 ± 5.9kJ/molCcbHancock, Watson, et al., 1954Reanalyzed by Cox and Pilcher, 1970, Original value = -2830. kJ/mol; Corresponding «DELTA»fsolid = -564.55 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
192.2298.15Singh and Glicksman, 1990T = 295 to 319 K. Cp(c) = 13.38 + 0.1092T cal/mol*K (295 to 300 K). Cp value calculated from equation. Cp(liq) = 16.19 + 0.1042T cal/mol*K.; DH
178.298.15Konicek and Wadso, 1971DH

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
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - 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

C5H9O2- + Hydrogen cation = Propanoic acid, 2,2-dimethyl-

By formula: C5H9O2- + H+ = C5H10O2

Quantity Value Units Method Reference Comment
Deltar1442. ± 8.8kJ/molG+TSCaldwell, Renneboog, et al., 1989gas phase; B
Deltar1443. ± 8.8kJ/molG+TSJinfeng, Topsom, et al., 1988gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Deltar1413. ± 8.4kJ/molIMRECaldwell, Renneboog, et al., 1989gas phase; B
Deltar1414. ± 8.4kJ/molIMREJinfeng, Topsom, et al., 1988gas phase; value altered from reference due to change in acidity scale; B

Iodide + Propanoic acid, 2,2-dimethyl- = (Iodide bullet Propanoic acid, 2,2-dimethyl-)

By formula: I- + C5H10O2 = (I- bullet C5H10O2)

Quantity Value Units Method Reference Comment
Deltar64.4 ± 4.2kJ/molTDAsCaldwell and Kebarle, 1984gas phase; B,M
Quantity Value Units Method Reference Comment
Deltar90.8J/mol*KPHPMSCaldwell and Kebarle, 1984gas phase; M
Quantity Value Units Method Reference Comment
Deltar37. ± 4.2kJ/molTDAsCaldwell and Kebarle, 1984gas phase; B

2,2-Dimethylpropanoic anhydride + Water = 2Propanoic acid, 2,2-dimethyl-

By formula: C10H18O3 + H2O = 2C5H10O2

Quantity Value Units Method Reference Comment
Deltar-63.26kJ/molCmConn, Kistiakowsky, et al., 1942liquid phase; Heat of hydrolysis at 303 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.

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]

Singh and Glicksman, 1990
Singh, N.B.; Glicksman, M.E., Physical properties of ultra-pure pivalic acid, Thermochim. Acta, 1990, 159, 93-99. [all data]

Konicek and Wadso, 1971
Konicek, J.; Wadso, I., Thermochemical properties of some carboxylic acids, amines and N-substituted amides in aqueous solution, Acta Chem. Scand., 1971, 25, 1541-1551. [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]

Jinfeng, Topsom, et al., 1988
Jinfeng, C.; Topsom, R.D.; Headley, A.D.; Koppel, I.; Mishima, M.; Taft, R.W.; Veji, S., Acidities of Substituted Acetic Acids, J. Mol. Struct., 1988, 168, 141, https://doi.org/10.1016/0166-1280(88)80349-X . [all data]

Caldwell and Kebarle, 1984
Caldwell, G.; Kebarle, P., Binding energies and structural effects in halide anion-ROH and -RCOOH complexes from gas phase equilibria measurements, J. Am. Chem. Soc., 1984, 106, 967. [all data]

Conn, Kistiakowsky, et al., 1942
Conn, J.B.; Kistiakowsky, G.B.; Roberts, R.M.; Smith, E.A., Heats of organic reactions. XIII. Heats of hydrolysis of some acid anhydrides, J. Am. Chem. Soc., 1942, 64, 1747-17. [all data]


Notes

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