Diazene, dimethyl-
- Formula: C2H6N2
- Molecular weight: 58.0824
- IUPAC Standard InChIKey: JCCAVOLDXDEODY-UHFFFAOYSA-N
- CAS Registry Number: 503-28-6
- 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. - Stereoisomers:
- Other names: Azomethane; (CH3N)2; 1,2-Dimethyldiazene; Dimethyldiazene
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Phase change data
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), 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:
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 274.7 | K | N/A | Weast and Grasselli, 1989 | BS |
Tboil | 275. | K | N/A | Buckingham and Donaghy, 1982 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
26.4 | 258. | A | Stephenson and Malanowski, 1987 | Based on data from 195. to 273. K.; AC |
25.3 | 222. | A | Stephenson and Malanowski, 1987 | Based on data from 209. to 236. K.; AC |
Gas phase ion energetics data
Go To: Top, Phase change data, Mass spectrum (electron ionization), 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:
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 C2H6N2+ (ion structure unspecified)
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.30 | PE | Frost, Lee, et al., 1976 | LLK |
8.7 ± 0.2 | EI | Prasil and Forst, 1968 | RDSH |
8.7 ± 0.1 | EI | Gowenlock, Majer, et al., 1962 | RDSH |
9.0 | PE | Rao, 1975 | Vertical value; LLK |
8.95 ± 0.05 | PE | Koenig, Balle, et al., 1975 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
CH2N+ | 14.7 ± 0.3 | ? | EI | Prasil and Forst, 1968 | RDSH |
CH3+ | 11.5 ± 0.1 | ? | EI | Gowenlock, Majer, et al., 1962 | RDSH |
CH3N2+ | 9.2 | CH3 | EI | Foster and Beauchamp, 1972 | LLK |
CH3N2+ | 9.5 ± 0.3 | CH3 | EI | Prasil and Forst, 1968 | RDSH |
CH3N2+ | 9.0 ± 0.1 | CH3 | EI | Gowenlock, Majer, et al., 1962 | RDSH |
C2H4+ | 12.9 ± 0.3 | ? | EI | Prasil and Forst, 1968 | RDSH |
N2+ | 16.3 ± 0.3 | ? | EI | Prasil and Forst, 1968 | RDSH |
Mass spectrum (electron ionization)
Go To: Top, Phase change data, 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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | P.F.DIAMOND,SHELL RESEARCH LIMITED THORNTON RESEARCH CENTRE |
NIST MS number | 18966 |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Buckingham and Donaghy, 1982
Buckingham, J.; Donaghy, S.M.,
Dictionary of Organic Compounds: Fifth Edition, Chapman and Hall, New York, 1982, 1. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Frost, Lee, et al., 1976
Frost, D.C.; Lee, S.T.; McDowell, C.A.; Westwood, N.P.C.,
The photoelectron spectra of diazene, diazene-d2, trans-methyldiazene,
J. Chem. Phys., 1976, 64, 4719. [all data]
Prasil and Forst, 1968
Prasil, Z.; Forst, W.,
Mass spectrometry of azomethane,
J. Am. Chem. Soc., 1968, 90, 3344. [all data]
Gowenlock, Majer, et al., 1962
Gowenlock, B.G.; Majer, J.R.; Snelling, D.R.,
Bond dissociation energies in some azo compounds,
J. Chem. Soc. Faraday Trans., 1962, 58, 670. [all data]
Rao, 1975
Rao, C.N.R.,
Lone-pair ionization bands of chromophores in the photoelectron spectra of organic molecules,
Indian J. Chem., 1975, 13, 950. [all data]
Koenig, Balle, et al., 1975
Koenig, T.; Balle, T.; Snell, W.,
Helium(I) photoelectron spectra of organic radicals,
J. Am. Chem. Soc., 1975, 97, 662. [all data]
Foster and Beauchamp, 1972
Foster, M.S.; Beauchamp, J.L.,
Gas-phase ion chemistry of azomethane by ion cyclotron resonance spectroscopy,
J. Am. Chem. Soc., 1972, 94, 2425. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
AE Appearance energy Tboil Boiling point ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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