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,[1] 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.

IsomersEdit

The following is a partial list of hexenes.

Name Structural formula CAS Number Melting point[2]
(°C)
Boiling point[2]
(°C)
Density[2]
(g/cm3)
Refractive index[2]
(589 nm)
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-1-ene
  • hex-2-ene (E/Z)
  • hex-3-ene (E/Z)
  • 2-methylpent-1-ene
  • 3-methylpent-1-ene (R/S)
  • 4-methylpent-1-ene
  • 2-methylpent-2-ene
  • 3-methylpent-2-ene (E/Z)
  • 4-methylpent-2-ene (E/Z)
  • 2,3-dimethylbut-1-ene
  • 3,3-dimethylbut-1-ene
  • 2-ethylbut-1-ene
  • 2,3-dimethylbut-2-ene

See alsoEdit

ReferencesEdit

  1. ^ Hexene, Merriam-Webster Dictionary
  2. ^ a b c d "Chapter 3: Physical Constants of Organic Compounds". CRC Handbook (90th ed.). pp. 1–523.