1,3-Butadiene, 2,3-dimethyl-
- Formula: C6H10
- Molecular weight: 82.1436
- IUPAC Standard InChIKey: SDJHPPZKZZWAKF-UHFFFAOYSA-N
- CAS Registry Number: 513-81-5
- 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: Biisopropenyl; Diisopropenyl; 2,3-Dimethyl-1,3-butadiene; 2,3-Dimethylbuta-1,3-diene; 2,3-Dimethylbutadiene; CH2=C(CH3)C(CH3)=CH2; 2,3-Dimethylenebutane
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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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
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)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 835.0 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 807.8 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.66 ± 0.05 | EI | Wolkoff, Holmes, et al., 1980 | LLK |
8.62 ± 0.02 | PE | Bieri, Burger, et al., 1977 | LLK |
8.66 | EI | Lossing and Traeger, 1975 | LLK |
8.62 | PE | Beez, Bieri, et al., 1973 | LLK |
8.54 ± 0.04 | EI | Bock and Seidl, 1968 | RDSH |
8.709 | S | Price and Walsh, 1940 | RDSH |
8.71 | PE | Werstiuk, Clark, et al., 1990 | Vertical value; LL |
8.71 | PE | Masclet, Mouvier, et al., 1981 | Vertical value; LLK |
8.72 | PE | Worley, Webb, et al., 1979 | Vertical value; LLK |
8.76 | PE | Sustmann and Schubert, 1972 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C5H7+ | 10.22 ± 0.05 | CH3 | EI | Wolkoff, Holmes, et al., 1980 | LLK |
C5H7+ | 8.66 | CH3 | EI | Lossing and Traeger, 1975, 2 | LLK |
C5H7+ | 10.22 | CH3 | EI | Lossing and Traeger, 1975 | LLK |
De-protonation reactions
C6H9- + =
By formula: C6H9- + H+ = C6H10
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1624. ± 13. | kJ/mol | G+TS | Clifford, Wenthold, et al., 1998 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1590. ± 13. | kJ/mol | IMRB | Clifford, Wenthold, et al., 1998 | gas phase; B |
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
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | Squalane | 70. | 612. | Safina, Poznyak, et al., 1989 | He, Risorb (0.2-0.3 mm); Column length: 2. m |
Capillary | SE-30 | 130. | 616. | Bredael, 1982 | Column length: 100. m; Column diameter: 0.5 mm |
Capillary | SE-30 | 80. | 616. | Bredael, 1982 | Column length: 100. m; Column diameter: 0.5 mm |
Capillary | Squalane | 50. | 598.1 | Bajus, Veselý, et al., 1979 | Column length: 100. m; Column diameter: 0.25 mm |
Capillary | Squalane | 70. | 598.3 | Bajus, Veselý, et al., 1979 | Column length: 100. m; Column diameter: 0.25 mm |
Packed | Squalane | 27. | 610. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 49. | 611. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 67. | 613. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 86. | 613. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Petrocol DH | 612. | White, Hackett, et al., 1992 | 100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C |
Normal alkane RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | SE-54 | 50. | 582. | Xieyun, Maoqi, et al., 1996 | N2; Column length: 40. m; Column diameter: 0.25 mm |
Capillary | Squalane | 70. | 612. | Schomburg, 1966 |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Petrocol DH | 614. | Supelco, 2012 | 100. m/0.25 mm/0.50 μm, Helium, 20. C @ 15. min, 15. K/min, 220. C @ 30. min |
Capillary | OV-101 | 607. | Orav, Kailas, et al., 1999 | 50. m/0.20 mm/0.50 μm, Helium, 30. C @ 6. min, 1. K/min; Tend: 100. C |
Capillary | OV-101 | 612. | Chupalov and Zenkevich, 1996 | N2, 3. K/min; Column length: 52. m; Column diameter: 0.26 mm; Tstart: 50. C; Tend: 220. C |
Capillary | OV-101 | 611. | Zenkevich and Kulikova, 1993 | He, 3. K/min; Column length: 54. m; Column diameter: 0.26 mm; Tstart: 50. C; Tend: 230. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-101 | 611. | Zenkevich, 1998 | He; Column length: 25. m; Column diameter: 0.20 mm; Program: not specified |
Capillary | OV-101 | 612. | Zenkevich, 1998 | He; Column length: 25. m; Column diameter: 0.20 mm; Program: not specified |
Capillary | OV-1, SE-30, Methyl silicone, SP-2100, OV-101, DB-1, etc. | 616. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
Normal alkane RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-Wax | 757. | Horiuchi, Umano, et al., 1998 | 60. m/0.25 mm/1. μm, He, 3. K/min, 200. C @ 40. min; Tstart: 50. 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]
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]
Lossing and Traeger, 1975
Lossing, F.P.; Traeger, J.C.,
Stabilization in cyclopentadienyl, cyclopentenyl, and cyclopentyl cations,
J. Am. Chem. Soc., 1975, 97, 1579. [all data]
Beez, Bieri, et al., 1973
Beez, M.; Bieri, G.; Bock, H.; Heilbronner, E.,
The ionization potentials of butadiene, hexatriene, andtheir methyl derivatives: evidence for through space interaction between double bond π-orbitals and non-bonded pseudo-π orbitals of methyl groups?,
Helv. Chim. Acta, 1973, 56, 1028. [all data]
Bock and Seidl, 1968
Bock, H.; Seidl, H.,
'd-Orbital effects' in silicon- substituted π-electron systems. XI. Syntheses and properties of the isomeric bis(trimethylsilyl)-1,3-butadienes,
J. Am. Chem. Soc., 1968, 90, 5694. [all data]
Price and Walsh, 1940
Price, W.C.; Walsh, A.D.,
The absorption spectra of conjugated dienes in the vacuum ultra-violet (1),
Proc. Roy. Soc. (London), 1940, A174, 220. [all data]
Werstiuk, Clark, et al., 1990
Werstiuk, N.H.; Clark, K.B.; Leigh, W.J.,
Conformational analysis and structure elucidation of 2,3-dimethyl and 2,4-dimethyl-2,4-hexadienes by AM1 and He(I) ultraviolet photoelectron spectroscopy,
Can. J. Chem., 1990, 68, 2078. [all data]
Masclet, Mouvier, et al., 1981
Masclet, P.; Mouvier, G.; Bocquet, J.F.,
Effets electroniques et effets steriques dus a la substitution alcoyle dans les dienes conjugues,
J. Chim. Phys., 1981, 78, 99. [all data]
Worley, Webb, et al., 1979
Worley, S.D.; Webb, T.R.; Gibson, D.H.; Ong, T.-S.,
On the electronic structures of cyclobutadiene trimethylenemethane,
J. Organomet. Chem., 1979, 168, 16. [all data]
Sustmann and Schubert, 1972
Sustmann, R.; Schubert, R.,
Photoelektronenspektroskopische bestimmung von substituenten-effekten. I. Subtituierte butadiene,
Tetrahedron Lett., 1972, 27, 2739. [all data]
Lossing and Traeger, 1975, 2
Lossing, F.P.; Traeger, J.C.,
Free radicals by mass spectrometry XLVI. Heats of formation of C5H7 and C5H9 radicals and cations.,
J. Am. Chem. Soc., 1975, 19, 9. [all data]
Clifford, Wenthold, et al., 1998
Clifford, E.P.; Wenthold, P.G.; Lineberger, W.C.; Ellison, G.B.; Wang, C.X.; Grabowski, J.J.; Vila, F.; Jordan,
Properties of Tetramethyleneethane (TME) as Revealed by Ion Chemistry and Ion Photoelectron Spectroscopy,
J. Chem. Soc. Perkin Trans., 1998, 2, 5, 1015, https://doi.org/10.1039/a707322d
. [all data]
Safina, Poznyak, et al., 1989
Safina, L.R.; Poznyak, T.I.; Lisitsyn, D.M.; Kiseleva, E.V.; Kovalev, G.I.,
Selective gas-chromatographic determination of trace unsaturated and aromatic-hydrocarbons in complex-mixtures,
J. Appl. Chem. USSR (Engl. Transl.), 1989, 44, 5, 749-754. [all data]
Bredael, 1982
Bredael, P.,
Retention indices of hydrocarbons on SE-30,
J. Hi. Res. Chromatogr. Chromatogr. Comm., 1982, 5, 6, 325-328, https://doi.org/10.1002/jhrc.1240050610
. [all data]
Bajus, Veselý, et al., 1979
Bajus, M.; Veselý, V.; Leclercq, P.A.; Rijks, J.A.,
Steam cracking of hydrocarbons. 2. Pyrolysis of methylcyclohexane,
Ind. Eng. Chem. Prod. Res. Dev., 1979, 18, 2, 135-142, https://doi.org/10.1021/i360070a012
. [all data]
Hively and Hinton, 1968
Hively, R.A.; Hinton, R.E.,
Variation of the retention index with temperature on squalane substrates,
J. Gas Chromatogr., 1968, 6, 4, 203-217, https://doi.org/10.1093/chromsci/6.4.203
. [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]
Xieyun, Maoqi, et al., 1996
Xieyun, H.; Maoqi, C.; Shiyan, Y.,
Gas Chromatographic analysis during the process of heptaldehyde production using 1-hexene,
Chin. J. Chromatogr., 1996, 14, 4, 291-293. [all data]
Schomburg, 1966
Schomburg, G.,
Gaschromatographische Retentionsdaten und Struktur Chemischer Verbindungen. II. Methylverzweigungen und Doppelbindungen in Offenkettigen Kohlenwasserstoffen,
J. Chromatogr., 1966, 23, 1-17, https://doi.org/10.1016/S0021-9673(01)98652-2
. [all data]
Supelco, 2012
Supelco, CatalogNo. 24160-U,
Petrocol DH Columns. Catalog No. 24160-U, 2012, retrieved from http://www.sigmaaldrich.com/etc/medialib/docs/Supelco/Datasheet/1/w97949.Par.0001.File.tmp/w97949.pdf. [all data]
Orav, Kailas, et al., 1999
Orav, A.; Kailas, T.; Muurisepp, M.; Kann, J.,
Composition of the oil from waste tires. 1. Fraction boiling at yp to 160 0C,
Proc. Estonian Acad. Sci. Chem., 1999, 48, 1, 30-39. [all data]
Chupalov and Zenkevich, 1996
Chupalov, A.A.; Zenkevich, I.G.,
Chromatographic Characterization of Structural Transformations of Organic Compounds in Diels-Alder Reaction. Aliphatic Dienes and Dienophyls,
Zh. Org. Khim., 1996, 32, 6, 675-684. [all data]
Zenkevich and Kulikova, 1993
Zenkevich, I.G.; Kulikova, S.N.,
GC-MS Analysis of Products of Reactions of Unsaturated Compounds with Dimethyl Disulfide for Determination of Position of Double Bonds C=C,
Vestnik St. Petersburg University. Ser. phys-khim., 1993, 2, 59-69. [all data]
Zenkevich, 1998
Zenkevich, I.G.,
Application of Methods of Molecular Dynamics in Chromato-Spectral Identification of ISomeric Products of Organic reactions (in Russian),
Zh. Org. Khim., 1998, 34, 10, 1463-1470. [all data]
Waggott and Davies, 1984
Waggott, A.; Davies, I.W.,
Identification of organic pollutants using linear temperature programmed retention indices (LTPRIs) - Part II, 1984, retrieved from http://dwi.defra.gov.uk/research/completed-research/reports/dwi0383.pdf. [all data]
Horiuchi, Umano, et al., 1998
Horiuchi, M.; Umano, K.; Shibamoto, T.,
Analysis of volatile compounds formed from fish oil heated with cysteine and trimethylamine oxide,
J. Agric. Food Chem., 1998, 46, 12, 5232-5237, https://doi.org/10.1021/jf980482m
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Gas Chromatography, 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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