N-Methyl methanimine
- Formula: C2H5N
- Molecular weight: 43.0678
- CAS Registry Number: 1761-67-7
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Gas phase 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 44. ± 8. | kJ/mol | Ion | Peerboom, Ingemann, et al., 1990 | Appearance potentials |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, 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:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C2H5N+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 884.6 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 852.1 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.3 | PE | Bock and Dammel, 1987 | LBLHLM |
9.4 | PE | Frost, MacDonald, et al., 1978 | LLK |
9.8 ± 0.1 | EI | Fisher and Henderson, 1967 | RDSH |
10.0 | PE | Bock and Dammel, 1987 | Vertical value; LBLHLM |
9.90 ± 0.02 | PE | Frost, MacDonald, et al., 1978 | Vertical value; LLK |
De-protonation reactions
C2H4N- + = C2H5N
By formula: C2H4N- + H+ = C2H5N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1609. ± 21. | kJ/mol | G+TS | Kass and DePuy, 1985 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1582. ± 21. | kJ/mol | IMRB | Kass and DePuy, 1985 | gas phase; B |
References
Go To: Top, Gas phase thermochemistry 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.
Peerboom, Ingemann, et al., 1990
Peerboom, R.A.L.; Ingemann, S.; Nibbering, N.M.M.; Liebman, J.F.,
Proton affinities and heats of formation of the imines CH2=NH, CH2=NMe and PhCH=NH,
J. Chem. Soc. Perkin Trans. 2, 1990, 1825-1828. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Bock and Dammel, 1987
Bock, H.; Dammel, R.,
Methanimine RR"C=NR": Darstellung und photoelektronen-spektren,
J. Am. Chem. Soc., 1987, 120, 1961. [all data]
Frost, MacDonald, et al., 1978
Frost, D.C.; MacDonald, B.; McDowell, C.A.; Westwood, N.P.C.,
Pyrolysis of trimethyl hexahydro-s-triazines. The photoelectron spectra of N-methylmethylenimine, CH2=NCH3, and C-methyl- methylenimine, CH3CH=NH,
J. Electron Spectrosc. Relat. Phenom., 1978, 14, 379. [all data]
Fisher and Henderson, 1967
Fisher, I.P.; Henderson, E.,
Mass spectrometry of free radicals,
J. Chem. Soc. Faraday Trans., 1967, 63, 1342. [all data]
Kass and DePuy, 1985
Kass, S.R.; DePuy, C.H.,
Gas phase ion chemistry of azides. The generation of CH=N- and CH2=NCH2-,
J. Org. Chem., 1985, 50, 2874. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions 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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