1-Butyne, 3,3-dimethyl-
- Formula: C6H10
- Molecular weight: 82.1436
- IUPAC Standard InChIKey: PPWNCLVNXGCGAF-UHFFFAOYSA-N
- CAS Registry Number: 917-92-0
- 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. - Other names: t-Butylacetylene; tert-Butylacetylene; 3,3-Dimethyl-1-Butyne; 3,3-Dimethylbutyne; 3,3,3-Trimethylpropyne; (CH3)3CC≡CH; 3,3-Dimethylbutyne-1
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Gas phase ion energetics data
Go To: Top, 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:
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 |
---|---|---|---|
9.86 | PI | Orlov, Boganov, et al., 1985 | LBLHLM |
9.80 ± 0.05 | EI | Wolkoff, Holmes, et al., 1980 | LLK |
9.92 ± 0.02 | PE | Bieri, Burger, et al., 1977 | LLK |
9.923 ± 0.010 | PE | Carlier, Dubois, et al., 1975 | LLK |
10.67 ± 0.02 | EI | MacLean and Sacher, 1974 | LLK |
10.31 ± 0.04 | EI | Bock and Seidl, 1968 | RDSH |
10.21 | PE | Cabelli, Cowley, et al., 1981 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
CH3+ | 14.7 | C5H7 | EI | SenSharma and Franklin, 1973 | LLK |
C5H7+ | 9.86 | CH3 | PI | Orlov, Boganov, et al., 1985 | LBLHLM |
C5H7+ | 9.90 ± 0.05 | CH3 | EI | Wolkoff, Holmes, et al., 1980 | LLK |
C5H7+ | 9.86 ± 0.05 | CH3 | PI | Takhistov, Khlebnikova, et al., 1980 | LLK |
C5H7+ | 10.76 ± 0.06 | CH3 | EI | MacLean and Sacher, 1974 | LLK |
De-protonation reactions
C6H9- + =
By formula: C6H9- + H+ = C6H10
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1582. ± 9.2 | kJ/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1549. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
References
Go To: Top, Gas phase ion energetics data, 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]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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