N-Methyl methanimine


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
Δfgas11. ± 2.kcal/molIonPeerboom, Ingemann, et al., 1990Appearance potentials

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 by: John E. Bartmess

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

C2H4N- + Hydrogen cation = C2H5N

By formula: C2H4N- + H+ = C2H5N

Quantity Value Units Method Reference Comment
Δr384.6 ± 5.1kcal/molG+TSKass and DePuy, 1985gas phase
Quantity Value Units Method Reference Comment
Δr378.0 ± 5.0kcal/molIMRBKass and DePuy, 1985gas phase

(CAS Reg. No. 34285-60-4 • 4294967295C2H5N) + C2H5N = CAS Reg. No. 34285-60-4

By formula: (CAS Reg. No. 34285-60-4 • 4294967295C2H5N) + C2H5N = CAS Reg. No. 34285-60-4

Quantity Value Units Method Reference Comment
Δr18.9 ± 2.2kcal/molN/AMacKay, Hemsworth, et al., 1976gas phase

Gas phase ion energetics 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 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)211.4kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity203.7kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
9.3PEBock and Dammel, 1987LBLHLM
9.4PEFrost, MacDonald, et al., 1978LLK
9.8 ± 0.1EIFisher and Henderson, 1967RDSH
10.0PEBock and Dammel, 1987Vertical value; LBLHLM
9.90 ± 0.02PEFrost, MacDonald, et al., 1978Vertical value; LLK

De-protonation reactions

C2H4N- + Hydrogen cation = C2H5N

By formula: C2H4N- + H+ = C2H5N

Quantity Value Units Method Reference Comment
Δr384.6 ± 5.1kcal/molG+TSKass and DePuy, 1985gas phase; B
Quantity Value Units Method Reference Comment
Δr378.0 ± 5.0kcal/molIMRBKass and DePuy, 1985gas phase; B

References

Go To: Top, Gas phase thermochemistry data, Reaction 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]

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]

MacKay, Hemsworth, et al., 1976
MacKay, G.J.; Hemsworth, R.S.; Bohme, D.K., Absolute gas-phase acidities of CH3NH2, C2H5NH2, (CH3)2NH, and (CH3)3N, Can. J. Chem., 1976, 54, 1624. [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]


Notes

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