The invention of the alkene class.

definition

Alkenes are a class of unsaturated aliphatic hydrocarbons that contain one or more carbon-to-carbon double bonds and have the empirical formula CnH2n[1]. Alkenes are mainly synthesised from alkanes (principally ethane and propane) and are used in the manufacture of plastics, alcohols, aldehydes and are also used as fuels and illuminants.

INVENTION

The German chemist August Wilhelm von Hofmann invented[2] the alkene class in 1866. Prior to his proposition, the names of hydrocarbons consisted of the scattered use of the Greek feminine patronymic suffixes “-ene”, “-ine”, and “-one” meaning “daughter of”. Hofmann suggested systemising the nomenclature by using the vowels “a, e, i, o, u” to create the suffixes “-ane”, “-ine or -yne”, “-one”, and “-une”. Only the first three came into use[3].

INVENTOR

Here is a photograph[4] of August Wilhelm von Hofmann:

[ux_image_box img=”1180″ image_width=”40″ link=”http://en.wikipedia.org/wiki/August_Wilhelm_von_Hofmann” target=”_blank”]

1818-1892

[/ux_image_box]

sources
  1. https://encyclopedia2.thefreedictionary.com/alkene
  2. https://web.archive.org/web/20120414184114/http:// www.chem.yale.edu/~chem125/125/history99/5Valence/Nomenclature/Hofmannaeiou.html
  3. https://web.archive.org/web/20120202091842/http:// www.chem.yale.edu/~chem125/125/history99/5Valence/Nomenclature/alkanenames.html
  4. http://en.wikipedia.org/wiki/August_Wilhelm_von_Hofmann

Leave a Comment

Your email address will not be published. Required fields are marked *