1-Butyne, 3,3-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 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 C6H10+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
9.86PIOrlov, Boganov, et al., 1985LBLHLM
9.80 ± 0.05EIWolkoff, Holmes, et al., 1980LLK
9.92 ± 0.02PEBieri, Burger, et al., 1977LLK
9.923 ± 0.010PECarlier, Dubois, et al., 1975LLK
10.67 ± 0.02EIMacLean and Sacher, 1974LLK
10.31 ± 0.04EIBock and Seidl, 1968RDSH
10.21PECabelli, Cowley, et al., 1981Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CH3+14.7C5H7EISenSharma and Franklin, 1973LLK
C5H7+9.86CH3PIOrlov, Boganov, et al., 1985LBLHLM
C5H7+9.90 ± 0.05CH3EIWolkoff, Holmes, et al., 1980LLK
C5H7+9.86 ± 0.05CH3PITakhistov, Khlebnikova, et al., 1980LLK
C5H7+10.76 ± 0.06CH3EIMacLean and Sacher, 1974LLK

De-protonation reactions

C6H9- + Hydrogen cation = 1-Butyne, 3,3-dimethyl-

By formula: C6H9- + H+ = C6H10

Quantity Value Units Method Reference Comment
Δr378.0 ± 2.2kcal/molG+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr370.2 ± 2.0kcal/molIMREBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B

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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Mass 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 NIST Mass Spectrometry Data Center, 1990.
NIST MS number 114416

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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

Kovats' RI, non-polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
CapillarySqualane80.467.Soják, Farkas, et al., 1991107. m/0.25 mm/0.40 μm, H2

Van Den Dool and Kratz RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryPetrocol DH509.White, Hackett, et al., 1992100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C

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

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Column type Active phase I Reference Comment
CapillaryMethyl Silicone498.Zenkevich and Marinichev, 2001Program: not specified

References

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Orlov, Boganov, et al., 1985
Orlov, V.M.; Boganov, A.M.; Siretskaya, T.V.; Takhistov, V.V., Thermochemical characteristics of the molecular and fragmentation ions of substituted tert-butylacetylenes, Izv. Akad. Nauk SSSR Ser. Khim., 1985, 12, 2795. [all data]

Wolkoff, Holmes, et al., 1980
Wolkoff, P.; Holmes, J.L.; Lossing, F.P., On the formation of cyclopentenium cations from all C6H10+ molecular ion structures, Can. J. Chem., 1980, 58, 251. [all data]

Bieri, Burger, et al., 1977
Bieri, G.; Burger, F.; Heilbronner, E.; Maier, J.P., Valence ionization enrgies of hydrocarbons, Helv. Chim. Acta, 1977, 60, 2213. [all data]

Carlier, Dubois, et al., 1975
Carlier, P.; Dubois, J.E.; Masclet, P.; Mouvier, G., Spectres de photoelectrons des alcynes, J. Electron Spectrosc. Relat. Phenom., 1975, 7, 55. [all data]

MacLean and Sacher, 1974
MacLean, D.I.; Sacher, R.E., A study of some spectroscopic properties of Group IVA acetylides, J. Organomet. Chem., 1974, 74, 197. [all data]

Bock and Seidl, 1968
Bock, H.; Seidl, H., d-Orbital effects in siliconsubstituted π-electron systems. Part XII. Some spectroscopic properties of alkyl and silyl acetylenes and polyacetylenes, J. Chem. Soc. B, 1968, 1158. [all data]

Cabelli, Cowley, et al., 1981
Cabelli, D.E.; Cowley, A.H.; Dewar, M.J.S., UPE studies of conjugation involving group 5A elements. 2. Substituted tert-butylacetylenes, J. Am. Chem. Soc., 1981, 103, 3290. [all data]

SenSharma and Franklin, 1973
SenSharma, D.K.; Franklin, J.L., Heat of formation of free radicals by mass spectrometry, J. Am. Chem. Soc., 1973, 95, 6562. [all data]

Takhistov, Khlebnikova, et al., 1980
Takhistov, V.; Khlebnikova, N.; Orlov, V., Photoionization study of energetic properties of cations formed with fragmentation of substituted acetylenes containing elements of IV B group, Org. React. Tartu, 1980, 17, 449. [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Soják, Farkas, et al., 1991
Soják, L.; Farkas, P.; Ostrovský, I.; Janák, J.; Chrétien, J.R., Capillary gas chromatography of C5 - C13 branched alkynes on squalane and liquid crystal stationary phases, J. Chromatogr., 1991, 557, 241-253, https://doi.org/10.1016/S0021-9673(01)87136-3 . [all data]

White, Hackett, et al., 1992
White, C.M.; Hackett, J.; Anderson, R.R.; Kail, S.; Spock, P.S., Linear temperature programmed retention indices of gasoline range hydrocarbons and chlorinated hydrocarbons on cross-linked polydimethylsiloxane, J. Hi. Res. Chromatogr., 1992, 15, 2, 105-120, https://doi.org/10.1002/jhrc.1240150211 . [all data]

Zenkevich and Marinichev, 2001
Zenkevich, I.G.; Marinichev, A.N., Comparison of Topological and Dynamics Molecular Characteristics for Precalculation of Chromatographic Retention Parameters of Organic Compounds (in Russian), Zh. Struct. Khim., 2001, 42, 5, 893-902. [all data]


Notes

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