Benzoic acid, 2,4,5-trimethyl-

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Phase change 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.
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Δsub26.2 ± 0.1kcal/molVColomina, Jimenez, et al., 1987see Colomina, Turrion, et al., 1964; ALS
Δsub26.20kcal/molN/AColomina, Jimenez, et al., 1987DRB
Δsub26.2 ± 0.1kcal/molMEColomina, Jimenez, et al., 1987Based on data from 324. to 346. K.; AC

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Method Reference Comment
25.9 ± 0.1335.MEColomina, Jimenez, et al., 1987Based on data from 324. to 346. K.; AC

Gas phase ion energetics 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

De-protonation reactions

C10H11O2- + Hydrogen cation = Benzoic acid, 2,4,5-trimethyl-

By formula: C10H11O2- + H+ = C10H12O2

Quantity Value Units Method Reference Comment
Δr333.0 ± 2.1kcal/molIMREDecouzon, Gal, et al., 1997gas phase

References

Go To: Top, Phase change data, Gas phase ion energetics data, Notes

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

Colomina, Jimenez, et al., 1987
Colomina, M.; Jimenez, P.; Roux, M.V.; Turrion, C., Thermochemical properties of benzoic acid derivatives. XV. Vapour pressures and enthalpies of sublimation and formation of the six trimethylbenzoic acids, J. Chem. Thermodyn., 1987, 19, 1139-1144. [all data]

Colomina, Turrion, et al., 1964
Colomina, M.; Turrion, C.; Boned, M.L.; Panea, M., Investigaciones termoquimicas sobre los acidos alquilbenzoicos. III. Acidos trimetilbenzoicos, Anal. Fisc. Quim. B, 1964, 60, 619-626. [all data]

Decouzon, Gal, et al., 1997
Decouzon, M.; Gal, J.-F.; Maria, P.-C.; Bohm, S.; Jimenez, P.; Roux, M.V.; Exner, O., Steric Effects in Crowded Molecules in the Gas Phase: Polymethyl Substituted Benzoic Acids, New J. Chem., 1997, 21, 561. [all data]


Notes

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