Hydrazine, 1,2-dimethyl-
- Formula: C2H8N2
- Molecular weight: 60.0983
- IUPAC Standard InChIKey: DIIIISSCIXVANO-UHFFFAOYSA-N
- CAS Registry Number: 540-73-8
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: s-Dimethylhydrazine; DMH; Hydrazomethane; N,N'-Dimethylhydrazine; SDMH; 1,2-Dimethylhydrazine; (CH3NH)2; 1,2-Dimethylhydrazin; sym-Dimethylhydrazine; Dimethylhydrazine, symmetrical; Rcra waste number U099; Symetryczna dwumetylohydrazyna; UN 2382
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Gas phase ion energetics data
Go To: Top, Gas Chromatography, 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
LL - Sharon G. Lias and Joel F. Liebman
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.62 | PE | Barz and Fritz, 1972 | LLK |
8.22 | PE | Bodor, Dewar, et al., 1970 | RDSH |
7.8 ± 0.1 | EI | Dibeler, Franklin, et al., 1959 | RDSH |
9.02 | PE | Rademacher, 1975 | Vertical value; LLK |
9.02 | PE | Kimura and Osafune, 1975 | Vertical value; LLK |
9.00 | PE | Nelsen and Buschek, 1974 | Vertical value; LLK |
9.00 | PE | Nelsen and Buschek, 1974, 2 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
N2?+ | 12.5 | ? | EI | Dibeler, Franklin, et al., 1959 | RDSH |
C2H4N?+ | 12.1 ± 0.5 | ? | EI | Dibeler, Franklin, et al., 1959 | RDSH |
N2H2?+ | 11.0 ± 0.2 | ? | EI | Dibeler, Franklin, et al., 1959 | RDSH |
N2H3?+ | 10.2 ± 0.2 | ? | EI | Dibeler, Franklin, et al., 1959 | RDSH |
CH3+ | 13.9 ± 0.3 | ? | EI | Dibeler, Franklin, et al., 1959 | RDSH |
CH3N2+ | 9.7 ± 0.5 | ? | EI | Dibeler, Franklin, et al., 1959 | RDSH |
CH4N2+ | 9.7 ± 0.3 | CH4 | EI | Dibeler, Franklin, et al., 1959 | RDSH |
CH5N2+ | ≤8.69 | CH3 | EI | Burgers, Drewello, et al., 1989 | LL |
CH5N2+ | 9.1 ± 0.2 | CH3 | EI | Dibeler, Franklin, et al., 1959 | RDSH |
C2H7N2+ | 9.3 ± 0.2 | H | EI | Dibeler, Franklin, et al., 1959 | RDSH |
Gas Chromatography
Go To: Top, 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
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | SLB-5MS | 645. | Risticevic, Carasek, et al., 2008 | 10. m/0.18 mm/0.18 μm, Helium, 40. C @ 1.5 min, 10. K/min; Tend: 295. C |
Capillary | OV-101 | 594. | Zenkevich, 2005 | 25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; Tstart: 50. C; Tend: 250. C |
References
Go To: Top, Gas phase ion energetics data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Barz and Fritz, 1972
Barz, P.; Fritz, H.P.,
Untersuchungen an biochemish ligandensystemen, V. Komplexchemische und physikalisch-chemische untersuchungen am 1,2-dimethylhydrazin,
Z. Naturforsch. B:, 1972, 27, 1131. [all data]
Bodor, Dewar, et al., 1970
Bodor, N.; Dewar, M.J.S.; Jennings, W.B.; Worley, S.D.,
Photoelectron spectra of molecules-IV.Ionization potentials and heats of formation of some hydrazines and amines,
Tetrahedron, 1970, 26, 4109. [all data]
Dibeler, Franklin, et al., 1959
Dibeler, V.H.; Franklin, J.L.; Reese, R.M.,
Electron impact studies of hydrazine and the methyl-substituted hydrazines,
J. Am. Chem. Soc., 1959, 81, 68. [all data]
Rademacher, 1975
Rademacher, P.,
Acyclische Hydrazine,
Chem. Ber., 1975, 108, 1548. [all data]
Kimura and Osafune, 1975
Kimura, K.; Osafune, K.,
Photoelectron spectroscopic study of skew compounds. III. N,N'-dimethylhydrazine, dimethyl peroxide, and dimethyl disulfide,
Bull. Chem. Soc. Jpn., 1975, 48, 2421. [all data]
Nelsen and Buschek, 1974
Nelsen, S.F.; Buschek, J.M.,
Photoelectron spectra of hydrazines. IV. Empirical estimation of lone pair-lone pair dihedral angles and prediction of lone pair ionization potentials for some cyclic and bicyclic hydrazines,
J. Am. Chem. Soc., 1974, 96, 6982. [all data]
Nelsen and Buschek, 1974, 2
Nelsen, S.F.; Buschek, J.M.,
Photoelectron spectra of hydrazines. III. Evidence for similar lone pair-lone pair dihedral angles for acyclic hydrazines,
J. Am. Chem. Soc., 1974, 96, 2392. [all data]
Burgers, Drewello, et al., 1989
Burgers, P.C.; Drewello, T.; Schwarz, H.; Terlouw, J.K.,
CH5N2 hydrazyl radicals, cations and dication radicals studied by mass spectrometry. Is the N-protonated formaldehyde hydrazon cation +CH2-NH-NH2 a bridged species?,
Int. J. Mass Spectrom. Ion Processes, 1989, 95, 157. [all data]
Risticevic, Carasek, et al., 2008
Risticevic, S.; Carasek, E.; Pawliszyn, J.,
Headspace solid-phase microextraction-gas chromatographic-time-of-flight mass spectrometric methodology for geographical origin verification of coffee,
Anal. Chim. Acta, 2008, 617, 1-2, 72-84, https://doi.org/10.1016/j.aca.2008.04.009
. [all data]
Zenkevich, 2005
Zenkevich, I.G.,
Experimentally measured retention indices., 2005. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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