Pyridine, 4-methyl-

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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
RCD - Robert C. Dunbar

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

C6H6N- + Hydrogen cation = Pyridine, 4-methyl-

By formula: C6H6N- + H+ = C6H7N

Quantity Value Units Method Reference Comment
Δr1547. ± 21.kJ/molG+TSMeot-ner and Kafafi, 1988gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho.; B
Δr1568. ± 13.kJ/molG+TSDePuy, Kass, et al., 1988gas phase; Acid: p-methylpyridine. Between iPrOH, MeCN.; B
Quantity Value Units Method Reference Comment
Δr1518. ± 21.kJ/molIMRBMeot-ner and Kafafi, 1988gas phase; anchored to 88MEO scale, not the "87 acidity scale". The Kiefer, Zhang, et al., 1997 BDE is for ortho.; B
Δr1540. ± 13.kJ/molIMRBDePuy, Kass, et al., 1988gas phase; Acid: p-methylpyridine. Between iPrOH, MeCN.; B

Lithium ion (1+) + Pyridine, 4-methyl- = (Lithium ion (1+) • Pyridine, 4-methyl-)

By formula: Li+ + C6H7N = (Li+ • C6H7N)

Quantity Value Units Method Reference Comment
Δr196. ± 14.kJ/molCIDTRodgers, 2001RCD

Sodium ion (1+) + Pyridine, 4-methyl- = (Sodium ion (1+) • Pyridine, 4-methyl-)

By formula: Na+ + C6H7N = (Na+ • C6H7N)

Quantity Value Units Method Reference Comment
Δr133. ± 4.kJ/molCIDTRodgers, 2001RCD

Potassium ion (1+) + Pyridine, 4-methyl- = (Potassium ion (1+) • Pyridine, 4-methyl-)

By formula: K+ + C6H7N = (K+ • C6H7N)

Quantity Value Units Method Reference Comment
Δr98.7 ± 4.2kJ/molCIDTRodgers, 2001RCD

Henry's Law 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: Rolf Sander

Henry's Law constant (water solution)

kH(T) = H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)

H (mol/(kg*bar)) d(ln(kH))/d(1/T) (K) Method Reference
170.6600.MN/A

Ion clustering 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: Robert C. Dunbar

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

Potassium ion (1+) + Pyridine, 4-methyl- = (Potassium ion (1+) • Pyridine, 4-methyl-)

By formula: K+ + C6H7N = (K+ • C6H7N)

Quantity Value Units Method Reference Comment
Δr98.7 ± 4.2kJ/molCIDTRodgers, 2001 

Lithium ion (1+) + Pyridine, 4-methyl- = (Lithium ion (1+) • Pyridine, 4-methyl-)

By formula: Li+ + C6H7N = (Li+ • C6H7N)

Quantity Value Units Method Reference Comment
Δr196. ± 14.kJ/molCIDTRodgers, 2001 

Sodium ion (1+) + Pyridine, 4-methyl- = (Sodium ion (1+) • Pyridine, 4-methyl-)

By formula: Na+ + C6H7N = (Na+ • C6H7N)

Quantity Value Units Method Reference Comment
Δr133. ± 4.kJ/molCIDTRodgers, 2001 

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.

Meot-ner and Kafafi, 1988
Meot-ner, M.; Kafafi, S.A., Carbon Acidities of Aromatic Compounds, J. Am. Chem. Soc., 1988, 110, 19, 6297, https://doi.org/10.1021/ja00227a003 . [all data]

Kiefer, Zhang, et al., 1997
Kiefer, J.H.; Zhang, Q.; Kern, R.D.; Yao, J.; Jursic, B., Pyrolysis of Aromatic Azines: Pyrazine, Pyrimidine, and Pyridine, J. Phys. Chem. A, 1997, 101, 38, 7061, https://doi.org/10.1021/jp970211z . [all data]

DePuy, Kass, et al., 1988
DePuy, C.H.; Kass, S.R.; Bean, G.P., Formation and Reactions of Heteroaromatic Anions in the Gas Phase, J. Org. Chem., 1988, 53, 19, 4427, https://doi.org/10.1021/jo00254a001 . [all data]

Rodgers, 2001
Rodgers, M.T., Substituent Effects in the Binding of Alkali Metal Ions to Pyridines, Studied by Threshold Collision-Induced Dissociation and ab Initio Theory: The Methylpyridines, J. Phys. Chem. A, 2001, 105, 11, 2374, https://doi.org/10.1021/jp004055z . [all data]


Notes

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