1-Methyl-4(1H)-pyridinone


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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference
84. ± 3.403.EBeak, Bonham, et al., 1968

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
B - John E. Bartmess

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Individual Reactions

Pyridine, 4-methoxy- = 1-Methyl-4(1H)-pyridinone

By formula: C6H7NO = C6H7NO

Quantity Value Units Method Reference Comment
Δr-37. ± 2.kJ/molCisoBeak, Bonham, et al., 1968liquid phase; ALS
Δr-0.8 ± 8.4kJ/molEqkBeak, Bonham, et al., 1968liquid phase; Gas phase isomerization; ALS
Δr-37. ± 2.kJ/molEqkBeak and Bonham, 1966liquid phase; At 403 K; ALS

C6H6NO- + Hydrogen cation = 1-Methyl-4(1H)-pyridinone

By formula: C6H6NO- + H+ = C6H7NO

Quantity Value Units Method Reference Comment
Δr1583. ± 12.kJ/molG+TSGronert, Feng, et al., 2000gas phase; B
Quantity Value Units Method Reference Comment
Δr1548. ± 11.kJ/molIMRBGronert, Feng, et al., 2000gas phase; B

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.

Beak, Bonham, et al., 1968
Beak, P.; Bonham, J.; Lee, J.T., Jr., Equilibration studies. The energy differences for some six-membered heterocyclic methyl amide-imidate isomer paris, J. Am. Chem. Soc., 1968, 90, 1569-1582. [all data]

Beak and Bonham, 1966
Beak, P.; Bonham, J., Equilibration studies: the relative chemical binding energies of 2-methoxypyridine-n-methylpyrid-2-one and 4-methoxypyridine-N-methylpyrid-4-one, Chem. Commun., 1966, 631-632. [all data]

Gronert, Feng, et al., 2000
Gronert, S.; Feng, W.Y.; Chew, F.; Wu, W.M., The gas phase acid/base properties of 1,3,-dimethyluracil, 1-methyl-2-pyridone, and 1-methyl-4-pyridone: relevance to the mechanism of orotidine-5 '-monophosphate decarboxylase, Int. J. Mass Spectrom., 2000, 196, 251-258, https://doi.org/10.1016/S1387-3806(99)00191-8 . [all data]


Notes

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