annulene

noun an·nu·lene \ ˈan-yə-ˌlēn \

Definition of annulene

plural annulenes
chemistry
: any of a class of completely conjugated cyclic hydrocarbons (such as benzene or cyclooctatetraene)
  • In 1991, a temperate rainforest near Puerto Montt in central Chile yielded a fungus that made annulene, a hydrocarbon that has a history going back to the first formulations of rocket fuel.
  • —Buzzy GordonAmericas1 Nov. 2007
  • This class of annulenes, which have few hydrogens and are considered high-energy because of their numerous triple bonds, has also drawn attention as potential precursors to new carbon allotropes.
  • —Elizabeth WilsonChemical & Engineering News3 Mar. 1997
Note: Annulenes have the general chemical formula CnHn where n is an even number or CnHn + 1 if n is an odd number.

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Origin and Etymology of annulene

Latin annulus “ring” +-ene


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