Hexene is an alkene with a molecular formula C6H12. 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.
The following is a partial list of hexenes.
|Name||Structural formula||CAS Number||Melting point
|1-hexene||592-41-6||−139.76||63.48||0.6685 (25 °C)||1.3852 (25 °C)|
|(E)-2-hexene||4050-45-7||−133||67.9||0.6733 (25 °C)||1.3936 (20 °C)|
|(Z)-2-hexene||7688-21-3||−141.11||68.8||0.6824 (25 °C)||1.3979 (20 °C)|
|(E)-3-hexene||13269-52-8||−115.4||67.1||0.6772 (20 °C)||1.3943 (20 °C)|
|(Z)-3-hexene||7642-09-3||−137.8||66.4||0.6778 (20 °C)||1.3947 (20 °C)|
There are a total of 13 different alkene isomers of hexene, excluding additional geometric (E/Z) and optical (R/S) isomers:
- hex-2-ene (E/Z)
- hex-3-ene (E/Z)
- 3-methylpent-1-ene (R/S)
- 3-methylpent-2-ene (E/Z)
- 4-methylpent-2-ene (E/Z)
- Hexene, Merriam-Webster Dictionary
- "Chapter 3: Physical Constants of Organic Compounds". CRC Handbook (90th ed.). pp. 1–523.
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