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Diazene, dimethyl-


Phase change 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 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
Tboil274.7KN/AWeast and Grasselli, 1989BS
Tboil275.KN/ABuckingham and Donaghy, 1982BS

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
26.4258.AStephenson and Malanowski, 1987Based on data from 195. - 273. K.; AC
25.3222.AStephenson and Malanowski, 1987Based on data from 209. - 236. K.; AC

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 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
8.30PEFrost, Lee, et al., 1976LLK
8.7 ± 0.2EIPrasil and Forst, 1968RDSH
8.7 ± 0.1EIGowenlock, Majer, et al., 1962RDSH
9.0PERao, 1975Vertical value; LLK
8.95 ± 0.05PEKoenig, Balle, et al., 1975Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CH2N+14.7 ± 0.3?EIPrasil and Forst, 1968RDSH
CH3+11.5 ± 0.1?EIGowenlock, Majer, et al., 1962RDSH
CH3N2+9.2CH3EIFoster and Beauchamp, 1972LLK
CH3N2+9.5 ± 0.3CH3EIPrasil and Forst, 1968RDSH
CH3N2+9.0 ± 0.1CH3EIGowenlock, Majer, et al., 1962RDSH
C2H4+12.9 ± 0.3?EIPrasil and Forst, 1968RDSH
N2+16.3 ± 0.3?EIPrasil and Forst, 1968RDSH

Mass spectrum (electron ionization)

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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: 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

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Vibrational and/or electronic energy levels

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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: Takehiko Shimanouchi

Symmetry:   C2h     Symmetry Number sigma = 2


 Sym.   No   Approximate   Selected Freq.  Infrared   Raman   Comments 
 Species   type of mode   Value   Rating   Value  Phase  Value  Phase

ag 1 CH3 d-str 2977  C  ia 2977 M dp liq.
ag 2 CH3 s-str 2916  C  ia 2916 S p liq.
ag 3 NN str 1580  C  ia 1580 VW p liq.
ag 4 CH3 d-deform 1434  C  ia 1434 M liq.
ag 5 CH3 s-deform 1380  C  ia 1380 W liq.
ag 6 CN str 1176  C  ia 1176 VW liq.
ag 7 CH3 rock 916  C  ia 916 M liq.
ag 8 CCN bend 589  C  ia 589 VS p liq.
au 9 CH3 d-str 2966  D 2966 W sh sln.  ia
au 10 CH3 d-deform 1438  C 1438 gas  ia
au 11 CH3 rock 1109  C 1109 W gas  ia
au 12 CCN bend 312  D 312 S sln.  ia
au 13 CH3 torsion 222  D 222 VW gas  ia
bg 14 CH3 d-str 2982  D  ia 2982 VS sln.
bg 15 CH3 d-deform 1447  D  ia 1447 S sln.
bg 16 CH3 rock 1010  D  ia 1010 VW liq.
bg 17 CH3 torsion 223  D  ia 223 W sln.
bu 18 CH3 d-str 2982  C 2982 VS gas  ia
bu 19 CH3 s-str 2926  C 2926 VS gas  ia
bu 20 CH3 d-deform 1445  C 1445 S gas  ia
bu 21 CH3 s-deform 1393  C 1393 M gas  ia
bu 22 CN str 1300  C 1300 VW gas  ia
bu 23 CH3 rock 1009  C 1009 W gas  ia
bu 24 CCN bend 352  C 352 M gas  ia

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
VWVery weak
iaInactive
shShoulder
pPolarized
dpDepolarized
C3~6 cm-1 uncertainty
D6~15 cm-1 uncertainty

Gas Chromatography

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryMethyl Silicone396.Zenkevich, 1999Program: not specified

References

Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, 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]

Shimanouchi, 1972
Shimanouchi, T., Tables of Molecular Vibrational Frequencies Consolidated Volume II, J. Phys. Chem. Ref. Data, 1972, 6, 3, 993-1102. [all data]

Zenkevich, 1999
Zenkevich, I.G., Precalculation of Gas Chromatographic Retention Indices of Organic Compounds from Boiling Points of their Structural Analogues, Zh. Struct. Khim., 1999, 40, 1, 121-130. [all data]


Notes

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