1H-Pyrrole, 1-methyl-
- Formula: C5H7N
- Molecular weight: 81.1158
- IUPAC Standard InChIKey: OXHNLMTVIGZXSG-UHFFFAOYSA-N
- CAS Registry Number: 96-54-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Pyrrole, 1-methyl-; N-Methylpyrrole; 1-Methylpyrrole; 1-Methyl-1H-pyrrole; N-Methylpyrrol; 1-Methylpyrrol
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Gas phase ion energetics data
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
L - Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 7.99 ± 0.07 | eV | N/A | N/A | L |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.94 ± 0.02 | PI | Cooper, Williamson, et al., 1980 | LLK |
8.4 | EI | Sucrow, Bethke, et al., 1971 | LLK |
8.09 ± 0.01 | PI | Potapov and Yuzhakova, 1970 | RDSH |
7.95 ± 0.05 | PE | Baker, Betteridge, et al., 1970 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C5H6N+ | 11.2 ± 0.1 | H | PI | Potapov and Yuzhakova, 1970 | RDSH |
De-protonation reactions
C5H6N- + =
By formula: C5H6N- + H+ = C5H7N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1643. ± 13. | kJ/mol | G+TS | DePuy, Kass, et al., 1988 | gas phase; Anion of N-methyl-pyrrole. Between Me2NH, H2O.; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1615. ± 13. | kJ/mol | IMRB | DePuy, Kass, et al., 1988 | gas phase; Anion of N-methyl-pyrrole. Between Me2NH, H2O.; B |
References
Go To: Top, 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.
Cooper, Williamson, et al., 1980
Cooper, C.D.; Williamson, A.D.; Miller, J.C.; Compton, R.N.,
Resonantly enhanced multiphoton ionization of pyrrole, N-methyl pyrrole, and furan,
J. Chem. Phys., 1980, 73, 1527. [all data]
Sucrow, Bethke, et al., 1971
Sucrow, W.; Bethke, H.; Chondromatidis, G.,
Thermolyse von 1.2.4.5-Tetramethyl-hexahydro- 1.2.4.5-tetrazinen im Massenspektrometer,
Tetrahedron Lett., 1971, 19, 1481. [all data]
Potapov and Yuzhakova, 1970
Potapov, V.K.; Yuzhakova, O.A.,
Photoionization and electronic structure of pyrrole and its methyl derivatives,
Dokl. Akad. Nauk SSSR, 1970, 192, 131, In original 365. [all data]
Baker, Betteridge, et al., 1970
Baker, A.D.; Betteridge, D.; Kemp, N.R.; Kirby, R.E.,
Application of photoelectron spectrometry to pesticide analysis. Photoelectron spectra of fivemembered heterocycles and related molecules,
Anal. Chem., 1970, 42, 1064. [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]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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