Cyclopentene, 1,2-dimethyl-
- Formula: C7H12
- Molecular weight: 96.1702
- IUPAC Standard InChI: InChI=1S/C7H12/c1-6-4-3-5-7(6)2/h3-5H2,1-2H3
- IUPAC Standard InChIKey: SZZWLAZADBEDQP-UHFFFAOYSA-N
- CAS Registry Number: 765-47-9
- 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: 1,2-Dimethylcyclopentene; 1,2-dimethyl-1-cyclopentene
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Gas phase thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -9.89 | kcal/mol | Chyd | Allinger, Dodziuk, et al., 1982 |
Reaction thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
2 + 2
=
+
By formula: 2H2 + 2C7H12 = C7H14 + C7H14
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -22.55 ± 0.18 | kcal/mol | Chyd | Allinger, Dodziuk, et al., 1982 | liquid phase; solvent: Hexane |
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
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Capillary | SE-30 | 130. | 774. | Bredael, 1982 | Column length: 100. m; Column diameter: 0.5 mm |
| Capillary | SE-30 | 80. | 764. | Bredael, 1982 | Column length: 100. m; Column diameter: 0.5 mm |
| Capillary | Squalane | 30. | 741. | Bogoslovsky, Anvaer, et al., 1978 | |
| Capillary | Squalane | 50. | 743. | Bogoslovsky, Anvaer, et al., 1978 | |
| Capillary | Squalane | 67. | 745. | Bogoslovsky, Anvaer, et al., 1978 |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | PONA | 751. | Zhang, Ding, et al., 2009 | 50. m/0.20 mm/0.50 μm, Nitrogen, 35. C @ 15. min, 2. K/min, 200. C @ 10. min |
| Capillary | DB-1 | 710. | Ramnas, Ostermark, et al., 1994 | 50. m/0.32 mm/1.0 μm, He, 2. K/min; Tstart: -20. C |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Allinger, Dodziuk, et al., 1982
Allinger, N.L.; Dodziuk, H.; Rogers, D.W.; Naik, S.N.,
Heats of hydrogenation and formation of some 5-membered ring compounds by molecular mechanics calculations and direct measurements,
Tetrahedron, 1982, 38, 1593-1597. [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]
Bogoslovsky, Anvaer, et al., 1978
Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S.,
Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192. [all data]
Zhang, Ding, et al., 2009
Zhang, X.; Ding, L.; Sun, Z.; Song, L.; Sun, T.,
Study on quantitative structure-retention relationships for hydrocarbons in FCC gasoline,
Chromatographia, 2009, 70, 3/4, 511-518, https://doi.org/10.1365/s10337-009-1174-0
. [all data]
Ramnas, Ostermark, et al., 1994
Ramnas, O.; Ostermark, U.; Peterson, G.,
Characterization of sixty alkenes in a cat-cracked gasoline naphtha by gas chromatography,
Chromatographia, 1994, 38, 3/4, 222-226, https://doi.org/10.1007/BF02290340
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas Chromatography, References
- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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