Pyridine, 4-methyl-, 1-oxide
- Formula: C6H7NO
- Molecular weight: 109.1259
- IUPAC Standard InChI: InChI=1S/C6H7NO/c1-6-2-4-7(8)5-3-6/h2-5H,1H3
- IUPAC Standard InChIKey: IWYYIZOHWPCALJ-UHFFFAOYSA-N
- CAS Registry Number: 1003-67-4
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: γ-Picoline N-oxide; 4-Picoline, 1-oxide; γ-Picoline 1-oxide; 4-Methylpyridine N-oxide; 4-Methylpyridine 1-oxide; 4-Picoline N-oxide
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Phase change data
Go To: Top, Gas phase ion energetics data, References, Notes
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:
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 85.3 ± 2.6 | kJ/mol | ME | Ribeiro da Silva, 1998 | Based on data from 345. to 392. K.; AC |
| ΔsubH° | 79.1 ± 1.3 | kJ/mol | V | Lebedev, Chironov, et al., 1995 | ALS |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 79.1 ± 1.3 | 316. to 341. | Lebedev, Chironov, et al., 1995, 2 | AC |
Gas phase ion energetics data
Go To: Top, Phase change data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
View reactions leading to C6H7NO+ (ion structure unspecified)
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 8.17 | PE | Weiner and Lattman, 1974 | Vertical value |
| 8.12 ± 0.02 | PE | Maier and Muller, 1974 | Vertical value |
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.
Ribeiro da Silva, 1998
Ribeiro da Silva, M.,
Enthalpies of combustion of the pyridine N-oxide derivatives: 4-methyl-, 3-cyano-, 4-cyano-, 3-hydroxy-, 2-carboxy-, 4-carboxy-, and 3-methyl-4-nitro, and of the pyridine derivatives: 2-carboxy-, and 4-carboxy-. The dissociation enthalpies of the N-O bonds,
The Journal of Chemical Thermodynamics, 1998, 30, 7, 869-878, https://doi.org/10.1006/jcht.1998.0353
. [all data]
Lebedev, Chironov, et al., 1995
Lebedev, V.P.; Chironov, V.V.; Kizin, A.N.; Falyahov, I.F.; Saifullin, I.Sh.; Klyuchnikov, O.R.; Orlov, Yu.D.; Lebedev, Yu.A.,
The energies of dissociation of the N-O bonds in pyridine 1-oxide deriveates,
Russ. Chem. Bull. (Engl. Transl.), 1995, 44, 639-641. [all data]
Lebedev, Chironov, et al., 1995, 2
Lebedev, V.P.; Chironov, V.V.; Kizin, A.N.; Falyakhov, I.F.; Saifullin, I.Sh.; Klyushnikov, O.R.; Orlov, Yu.D.; Lebedev, Yu.A.,
Dissociation energy of the N-O bond in pyridine 1-oxide derivatives,
Izv. Akad. Nauk Ser. Khim., 1995, 4, 660. [all data]
Weiner and Lattman, 1974
Weiner, M.A.; Lattman, M.,
Photoelectron spectra of 4-substituted pyridine N-oxides,
Tetrahedron Lett., 1974, 1709. [all data]
Maier and Muller, 1974
Maier, J.P.; Muller, J.-F.,
Ionisation energies of pyridine N-oxides determined by photoelectron spectroscopy,
J. Chem. Soc. Faraday Trans. 2, 1974, 70, 1991. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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