Hydrazine, 1,1-dimethyl-

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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
L - Sharon G. Lias

Data compiled as indicated in comments:
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
LL - Sharon G. Lias and Joel F. Liebman

Quantity Value Units Method Reference Comment
IE (evaluated)7.29 ± 0.05eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)927.1kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity894.7kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
7.29 ± 0.05EQMautner(Meot-Ner), Nelsen, et al., 1984LBLHLM
8.05 ± 0.05PEVovna, Vilesov, et al., 1975LLK
8.28PEBodor, Dewar, et al., 1970RDSH
7.67 ± 0.05PIAkopyan and Vilesov, 1963RDSH
7.46 ± 0.02PIAkopyan, Vilesov, et al., 1963RDSH
8.1 ± 0.1EIDibeler, Franklin, et al., 1959RDSH
8.82PERademacher, 1975Vertical value; LLK
8.85PEKimura, Katsumata, et al., 1975Vertical value; LLK
8.88PENelsen and Buschek, 1974Vertical value; LLK
8.88PENelsen and Buschek, 1974, 2Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C2H7N?+11.2 ± 0.2?PIAkopyan and Vilesov, 1963RDSH
N2H2?+12.9 ± 0.1?EIDibeler, Franklin, et al., 1959RDSH
N2?+13.2 ± 0.1?EIDibeler, Franklin, et al., 1959RDSH
C2H4N?+12.8 ± 0.2?EIDibeler, Franklin, et al., 1959RDSH
CH3+14.5 ± 0.3?EIDibeler, Franklin, et al., 1959RDSH
CH5N2+8.60CH3EIBurgers, Drewello, et al., 1989LL
CH5N2+8.4 ± 0.1CH3PIAkopyan and Vilesov, 1963RDSH
CH5N2+9.7 ± 0.2CH3EIDibeler, Franklin, et al., 1959RDSH
C2H5N+8.8 ± 0.1?PIAkopyan and Vilesov, 1963RDSH
C2H5N+12.5 ± 0.2?EIDibeler, Franklin, et al., 1959RDSH
C2H6N+10.45 ± 0.05?EIFisher and Henderson, 1967RDSH
C2H6N+9.0 ± 0.2?PIAkopyan and Vilesov, 1963RDSH
C2H6N+10.7 ± 0.1?EIGowenlock, Jones, et al., 1961RDSH
C2H6N+10.9 ± 0.2?EIDibeler, Franklin, et al., 1959RDSH
C2H6N2+9.5 ± 0.1H2PIAkopyan and Vilesov, 1963RDSH
C2H7N2+10.1 ± 0.1HEIFoner and Hudson, 1970RDSH
C2H7N2+8.7 ± 0.2HPIAkopyan and Vilesov, 1963RDSH
C2H7N2+10.0 ± 0.3HEIFoner and Hudson, 1962RDSH
C2H7N2+10.2 ± 0.2HEIDibeler, Franklin, et al., 1959RDSH
NH2+13.3 ± 0.1?EIGowenlock, Jones, et al., 1961RDSH
N2H2+8.6 ± 0.1C2H6PIAkopyan and Vilesov, 1963RDSH

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, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryOV-101527.Zenkevich, 200525. 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.

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]

Mautner(Meot-Ner), Nelsen, et al., 1984
Mautner(Meot-Ner), M.; Nelsen, S.F.; Willi, M.R.; Frigo, T.B., Special effects of an unusually large neutral to radical cation geometry change. Adiabatic ionization energies and proton affinities of alkylhydrazines, J. Am. Chem. Soc., 1984, 106, 7384. [all data]

Vovna, Vilesov, et al., 1975
Vovna, V.I.; Vilesov, F.I.; Lopatin, S.N., Photoelectron spectra of hydrazine and some alkyl derivatives, Opt. Spectrosc., 1975, 38, 143. [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]

Akopyan and Vilesov, 1963
Akopyan, M.E.; Vilesov, F.I., Decay of the molecular ions formed in photoionization of hydrazine and some of its alkyl derivatives, Kinetika i Kataliz, 1963, 4, 39, In original 32. [all data]

Akopyan, Vilesov, et al., 1963
Akopyan, M.E.; Vilesov, F.I.; Terenin, A.N., Mass spectrometric investigation of photoionization of molecules and dissociation of excited molecular ions, Izv. Akad. Nauk SSSR, Ser. Fiz., 1963, 27, 1083, In original 1054. [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, Katsumata, et al., 1975
Kimura, K.; Katsumata, S.; Osafune, K., Photoelectron spectroscopic study of skew compounds. Methylhydrazine and unsymmetrical dimethylhydrazine, Bull. Chem. Soc. Jpn., 1975, 48, 2736. [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]

Fisher and Henderson, 1967
Fisher, I.P.; Henderson, E., Mass spectrometry of free radicals, J. Chem. Soc. Faraday Trans., 1967, 63, 1342. [all data]

Gowenlock, Jones, et al., 1961
Gowenlock, B.G.; Jones, P.P.; Majer, J.R., Bond dissociation energies in some molecules containing alkyl substituted CH3, NH2, and OH, J. Chem. Soc. Faraday Trans., 1961, 57, 23. [all data]

Foner and Hudson, 1970
Foner, S.N.; Hudson, R.L., Mass spectrometric studies of atom-molecule reactions using high-intensity crossed molecular beams, J. Chem. Phys., 1970, 53, 4377. [all data]

Foner and Hudson, 1962
Foner, S.N.; Hudson, R.L., Mass spectrometry of inorganic free radicals, Advan. Chem. Ser., 1962, 36, 34. [all data]

Zenkevich, 2005
Zenkevich, I.G., Experimentally measured retention indices., 2005. [all data]


Notes

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