Hexene
In organic chemistry, hexene is a hydrocarbon with the chemical formula. The prefix "hex" is derived from the fact that there are 6 carbon atoms in the molecule, while the "-ene" suffix denotes that there is an alkene present—two carbon atoms are connected via a double bond. There are several isomers of hexene, depending on the position and geometry of the double bond in the chain. One of the most common industrially useful isomers is 1-hexene, an alpha-olefin. Hexene is used as a comonomer in the production of polyethylene.
Isomers
The following is a partial list of hexenes.| Name | Structural formula | CAS Number | Melting point | Boiling point | Density | Refractive index |
| 1-hexene | 592-41-6 | −139.76 | 63.48 | 0.6685 | 1.3852 | |
| -2-hexene | 4050-45-7 | −133 | 67.9 | 0.6733 | 1.3936 | |
| -2-hexene | 7688-21-3 | −141.11 | 68.8 | 0.6824 | 1.3979 | |
| -3-hexene | 13269-52-8 | −115.4 | 67.1 | 0.6772 | 1.3943 | |
| -3-hexene | 7642-09-3 | −137.8 | 66.4 | 0.6778 | 1.3947 |
There are a total of 13 different alkene isomers of hexene, excluding additional geometric and optical isomers:
- hex-1-ene
- hex-2-ene
- hex-3-ene
- 2-methylpent-1-ene
- 3-methylpent-1-ene
- 4-methylpent-1-ene
- 2-methylpent-2-ene
- 3-methylpent-2-ene
- 4-methylpent-2-ene
- 2,3-dimethylbut-1-ene
- 3,3-dimethylbut-1-ene
- 2-ethylbut-1-ene
- 2,3-dimethylbut-2-ene